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CVE-2023-5593: Security Advisories | Zyxel Networks

The out-of-bounds write vulnerability in the Windows-based SecuExtender SSL VPN Client software version 4.0.4.0 could allow an authenticated local user to gain a privilege escalation by sending a crafted CREATE message.

CVE
#vulnerability#windows#buffer_overflow#auth#ssl

Zyxel’s latest security announcements and advices

CVE ID

Title

Last Updated

CVE-2023-35140

Zyxel security advisory for improper privilege management vulnerability in GS1900 series switches

November 7, 2023

CVE-2017-6884

Zyxel security advisory for command injection vulnerability in EMG2926-Q10A Ethernet CPE

September 19, 2023

CVE-2023-28768

Zyxel security advisory for DoS vulnerability of XGS2220, XMG1930, and XS1930 series switches

August 15, 2023

CVE-2023-33013

Zyxel security advisory for post-authentication command injection in NTP feature of NBG6604 home router

August 15, 2023

CVE-2017-18368

Zyxel security advisory for command injection vulnerability in P660HN-T1A DSL CPE

August 8, 2023

CVE-2023-28767
CVE-2023-33011
CVE-2023-33012
CVE-2023-34138
CVE-2023-34139
CVE-2023-34140
CVE-2023-34141

Zyxel security advisory for multiple vulnerabilities in firewalls and WLAN controllers

July 18, 2023

CVE-2023-27989

Zyxel security advisory for buffer overflow vulnerability in 4G LTE and 5G NR outdoor routers

July 4, 2023

CVE-2023-27992

Zyxel security advisory for pre-authentication command injection vulnerability in NAS products

June 20, 2023

CVE-2022-45853

Zyxel security advisory for privilege escalation vulnerability in GS1900 series switches

June 6, 2023

CVE-2023-28771
CVE-2023-33009
CVE-2023-33010

Zyxel’s guidance for the recent attacks on the ZyWALL devices

June 2, 2023

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Russian Script Kiddie Assembles Massive DDoS Botnet

Over the past year, "Matrix" has used publicly available malware tools and exploit scripts to target weakly secured IoT devices — and enterprise servers.

‘Matrix’ Hackers Deploy Massive New IoT Botnet for DDoS Attacks

Aqua Nautilus researchers have discovered a campaign powering a series of large-scale DDoS attacks launched by Matrix, which…

Zyxel parse_config.py Command Injection

This Metasploit module exploits vulnerabilities in multiple Zyxel devices including the VPN, USG and APT series. The affected firmware versions depend on the device module, see this module's documentation for more details.

Forescout Report Uncovers New Details in Danish Energy Hack

By Deeba Ahmed The attacks, potentially linked to Russian APT Sandworm, exploited vulnerabilities in Zyxel firewalls. This is a post from HackRead.com Read the original post: Forescout Report Uncovers New Details in Danish Energy Hack

New Findings Challenge Attribution in Denmark's Energy Sector Cyberattacks

The cyber attacks targeting the energy sector in Denmark last year may not have had the involvement of the Russia-linked Sandworm hacking group, new findings from Forescout show. The intrusions, which targeted around 22 Danish energy organizations in May 2023, occurred in two distinct waves, one which exploited a security flaw in Zyxel firewall (CVE-2023-28771) and a

Russian Hackers Launch 'Largest Ever Cyber Attack' on Danish Critical Infrastructure

Russian threat actors have been possibly linked to what's been described as the "largest cyber attack against Danish critical infrastructure," in which 22 companies associated with the operation of the country's energy sector were targeted in May 2023.  "22 simultaneous, successful cyberattacks against Danish critical infrastructure are not commonplace," Denmark's SektorCERT said [PDF]. "The

Russian Hackers Launch 'Largest Ever Cyber Attack' on Danish Critical Infrastructure

Russian threat actors have been possibly linked to what's been described as the "largest cyber attack against Danish critical infrastructure," in which 22 companies associated with the operation of the country's energy sector were targeted in May 2023.  "22 simultaneous, successful cyberattacks against Danish critical infrastructure are not commonplace," Denmark's SektorCERT said [PDF]. "The

Russian Hackers Launch 'Largest Ever Cyber Attack' on Danish Critical Infrastructure

Russian threat actors have been possibly linked to what's been described as the "largest cyber attack against Danish critical infrastructure," in which 22 companies associated with the operation of the country's energy sector were targeted in May 2023.  "22 simultaneous, successful cyberattacks against Danish critical infrastructure are not commonplace," Denmark's SektorCERT said [PDF]. "The

CVE-2023-35140: Zyxel security advisory for improper privilege management vulnerability in GS1900 series switches | Zyxel Networks

The improper privilege management vulnerability in the Zyxel GS1900-24EP switch firmware version V2.70(ABTO.5) could allow an authenticated local user with read-only access to modify system settings on a vulnerable device.

Trend Micro Releases Urgent Fix for Actively Exploited Critical Security Vulnerability

Cybersecurity company Trend Micro has released patches and hotfixes to address a critical security flaw in Apex One and Worry-Free Business Security solutions for Windows that has been actively exploited in real-world attacks. Tracked as CVE-2023-41179 (CVSS score: 9.1), it relates to a third-party antivirus uninstaller module that's bundled along with the software. The complete list of impacted

CVE-2023-28768

Improper frame handling in the Zyxel XGS2220-30 firmware version V4.80(ABXN.1), XMG1930-30 firmware version V4.80(ACAR.1), and XS1930-10 firmware version V4.80(ABQE.1) could allow an unauthenticated LAN-based attacker to cause denial-of-service (DoS) conditions by sending crafted frames to an affected switch.

CVE-2023-33013

A post-authentication command injection vulnerability in the NTP feature of Zyxel NBG6604 firmware version V1.01(ABIR.1)C0 could allow an authenticated attacker to execute some OS commands remotely by sending a crafted HTTP request.

DDoS Botnets Hijacking Zyxel Devices to Launch Devastating Attacks

Several distributed denial-of-service (DDoS) botnets have been observed exploiting a critical flaw in Zyxel devices that came to light in April 2023 to gain remote control of vulnerable systems. "Through the capture of exploit traffic, the attacker's IP address was identified, and it was determined that the attacks were occurring in multiple regions, including Central America, North America,

Dark.IoT & Custom Botnets Exploit Zyxel Flaw in DDoS Attacks

By Waqas The DDoS attacks have been observed in various regions, including Central America, North America, East Asia, and South Asia. This is a post from HackRead.com Read the original post: Dark.IoT & Custom Botnets Exploit Zyxel Flaw in DDoS Attacks

CVE-2023-28767

The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions 5.00 through 5.36,  USG FLEX 50(W) series firmware versions 5.10 through 5.36, USG20(W)-VPN series firmware versions 5.10 through 5.36, and VPN series firmware versions 5.00 through 5.36. An unauthenticated, LAN-based attacker could leverage the vulnerability to inject some operating system (OS) commands into the device configuration data on an affected device when the cloud management mode is enabled.

U.S. Cybersecurity Agency Adds 6 Flaws to Known Exploited Vulnerabilities Catalog

The U.S. Cybersecurity and Infrastructure Security Agency has added a batch of six flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. This comprises three vulnerabilities that Apple patched this week (CVE-2023-32434, CVE-2023-32435, and CVE-2023-32439), two flaws in VMware (CVE-2023-20867 and CVE-2023-20887), and one shortcoming impacting Zyxel

Reducing your attack surface is more effective than playing patch-a-mole

Categories: News Tags: CISA Tags: BOD 23-02 Tags: Internet exposed Tags: management interfaces Tags: vulnerabilities Tags: CVE-2023-27992 Tags: CVE-2023-20887 There is a lot to be said for the strategy of shielding management interfaces from public internet access (Read more...) The post Reducing your attack surface is more effective than playing patch-a-mole appeared first on Malwarebytes Labs.

SMB Edge Devices Walloped With Asus, Zyxel Patch Warnings

A slew of critical advisories this week showcase an exploding edge device attack surface for SMBs, which have limited cybersecurity protection, visibility, and maintenance available.

Zyxel Releases Urgent Security Updates for Critical Vulnerability in NAS Devices

Zyxel has rolled out security updates to address a critical security flaw in its network-attached storage (NAS) devices that could result in the execution of arbitrary commands on affected systems. Tracked as CVE-2023-27992 (CVSS score: 9.8), the issue has been described as a pre-authentication command injection vulnerability. "The pre-authentication command injection vulnerability in some Zyxel

Zyxel Releases Urgent Security Updates for Critical Vulnerability in NAS Devices

Zyxel has rolled out security updates to address a critical security flaw in its network-attached storage (NAS) devices that could result in the execution of arbitrary commands on affected systems. Tracked as CVE-2023-27992 (CVSS score: 9.8), the issue has been described as a pre-authentication command injection vulnerability. "The pre-authentication command injection vulnerability in some Zyxel

Zyxel Releases Urgent Security Updates for Critical Vulnerability in NAS Devices

Zyxel has rolled out security updates to address a critical security flaw in its network-attached storage (NAS) devices that could result in the execution of arbitrary commands on affected systems. Tracked as CVE-2023-27992 (CVSS score: 9.8), the issue has been described as a pre-authentication command injection vulnerability. "The pre-authentication command injection vulnerability in some Zyxel

CVE-2023-27992

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.

Zyxel IKE Packet Decoder Unauthenticated Remote Code Execution

This Metasploit module exploits a remote unauthenticated command injection vulnerability in the Internet Key Exchange (IKE) packet decoder over UDP port 500 on the WAN interface of several Zyxel devices. The affected devices are as follows: ATP (Firmware version 4.60 to 5.35 inclusive), USG FLEX (Firmware version 4.60 to 5.35 inclusive), VPN (Firmware version 4.60 to 5.35 inclusive), and ZyWALL/USG (Firmware version 4.60 to 4.73 inclusive). The affected devices are vulnerable in a default configuration and command execution is with root privileges.

Zyxel Firewalls Under Attack! Urgent Patching Required

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, are buffer overflow vulnerabilities that could enable an unauthenticated attacker to cause a

Zyxel Firewalls Under Attack! Urgent Patching Required

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, are buffer overflow vulnerabilities that could enable an unauthenticated attacker to cause a

Zyxel Firewalls Under Attack! Urgent Patching Required

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, are buffer overflow vulnerabilities that could enable an unauthenticated attacker to cause a

Zyxel Firewalls Under Attack! Urgent Patching Required

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, are buffer overflow vulnerabilities that could enable an unauthenticated attacker to cause a

Zyxel Firewalls Under Attack! Urgent Patching Required

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, are buffer overflow vulnerabilities that could enable an unauthenticated attacker to cause a

CVE-2023-27989

A buffer overflow vulnerability in the CGI program of the Zyxel NR7101 firmware versions prior to V1.00(ABUV.8)C0 could allow a remote authenticated attacker to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.

Active Mirai Botnet Variant Exploiting Zyxel Devices for DDoS Attacks

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a recently patched critical security flaw in Zyxel gear to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. Tracked as CVE-2023-28771 (CVSS score: 9.8), the issue relates to a command injection flaw impacting different firewall models that could enable an unauthenticated attacker

CVE-2022-45853: Zyxel security advisory for privilege escalation vulnerability in GS1900 series switches | Zyxel Networks

The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local attacker with administrator privileges to execute some system commands as 'root' on a vulnerable device via SSH.

Mirai Malware Hits Zyxel Devices After Command Injection Bug

By Deeba Ahmed A variant of the Mirai botnet is targeting Zyxel Firewalls after exploiting a newly patched operating system command injection vulnerability. This is a post from HackRead.com Read the original post: Mirai Malware Hits Zyxel Devices After Command Injection Bug

Mirai Malware Hits Zyxel Devices After Command Injection Bug

By Deeba Ahmed A variant of the Mirai botnet is targeting Zyxel Firewalls after exploiting a newly patched operating system command injection vulnerability. This is a post from HackRead.com Read the original post: Mirai Malware Hits Zyxel Devices After Command Injection Bug

Mirai Malware Hits Zyxel Devices After Command Injection Bug

By Deeba Ahmed A variant of the Mirai botnet is targeting Zyxel Firewalls after exploiting a newly patched operating system command injection vulnerability. This is a post from HackRead.com Read the original post: Mirai Malware Hits Zyxel Devices After Command Injection Bug

Zyxel patches two critical vulnerabilities

Categories: Exploits and vulnerabilities Categories: News Zyxel has released a security advisory about two critical vulnerabilities that could allow an unauthorized, remote attacker to take control of its firewall devices. (Read more...) The post Zyxel patches two critical vulnerabilities appeared first on Malwarebytes Labs.

Zyxel patches two critical vulnerabilities

Categories: Exploits and vulnerabilities Categories: News Zyxel has released a security advisory about two critical vulnerabilities that could allow an unauthorized, remote attacker to take control of its firewall devices. (Read more...) The post Zyxel patches two critical vulnerabilities appeared first on Malwarebytes Labs.

Zyxel Issues Critical Security Patches for Firewall and VPN Products

Zyxel has released software updates to address two critical security flaws affecting select firewall and VPN products that could be abused by remote attackers to achieve code execution. Both the flaws – CVE-2023-33009 and CVE-2023-33010 – are buffer overflow vulnerabilities and are rated 9.8 out of 10 on the CVSS scoring system. A brief description of the two issues is below - CVE-2023-33009 -

Zyxel Issues Critical Security Patches for Firewall and VPN Products

Zyxel has released software updates to address two critical security flaws affecting select firewall and VPN products that could be abused by remote attackers to achieve code execution. Both the flaws – CVE-2023-33009 and CVE-2023-33010 – are buffer overflow vulnerabilities and are rated 9.8 out of 10 on the CVSS scoring system. A brief description of the two issues is below - CVE-2023-33009 -

Zyxel Issues Critical Security Patches for Firewall and VPN Products

Zyxel has released software updates to address two critical security flaws affecting select firewall and VPN products that could be abused by remote attackers to achieve code execution. Both the flaws – CVE-2023-33009 and CVE-2023-33010 – are buffer overflow vulnerabilities and are rated 9.8 out of 10 on the CVSS scoring system. A brief description of the two issues is below - CVE-2023-33009 -

CVE-2023-33010: Zyxel security advisory for multiple buffer overflow vulnerabilities of firewalls | Zyxel Networks

A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.

CVE-2023-33010: Zyxel security advisory for multiple buffer overflow vulnerabilities of firewalls | Zyxel Networks

A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.

Zyxel Firewall Devices Vulnerable to Remote Code Execution Attacks — Patch Now

Networking equipment maker Zyxel has released patches for a critical security flaw in its firewall devices that could be exploited to achieve remote code execution on affected systems. The issue, tracked as CVE-2023-28771, is rated 9.8 on the CVSS scoring system. Researchers from TRAPA Security have been credited with reporting the flaw. "Improper error message handling in some firewall versions

CVE-2023-28771: Zyxel security advisory for OS command injection vulnerability of firewalls | Zyxel Networks

Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.

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CVE: Latest News

CVE-2023-50976: Transactions API Authorization by oleiman · Pull Request #14969 · redpanda-data/redpanda
CVE-2023-6905
CVE-2023-6903
CVE-2023-6904
CVE-2023-3907