#dos

In the last newsletter of the year, Thorsten recalls his tech-savvy gift to his family and how we can all incorporate cybersecurity protections this holiday season.

### Summary A Denial of Service (DoS) vulnerability in the authentication middleware allows any client to cause memory exhaustion by sending large request bodies. The server reads the entire request body into memory without size limits, creating multiple copies during processing, which can lead to Out of Memory conditions. Affects all versions up to the latest one (v0.43.0). ### Details The vulnerability exists in the AuthMiddleware function in `core/src/auth/auth.go`. The middleware processes all API requests (`/api/*`) and reads the entire request body using `io.ReadAll` without any size limits: ```go func AuthMiddleware(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r http.Request) { // No size limit on body reading body, err := io.ReadAll(r.Body) // ... // Creates another copy of the body r.Body = io.NopCloser(bytes.NewReader(body)) // ... // Unmarshals the body again, creating more copies if err := j...

View CSAF 1. EXECUTIVE SUMMARY CVSS v3 5.9 ATTENTION: Exploitable remotely Vendor: Hitachi Energy Equipment: RTU500 series CMU Vulnerability: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following Hitachi Energy products are affected: RTU500 series CMU Firmware: Versions 12.0.1 through 12.0.14 RTU500 series CMU Firmware: Versions 12.2.1 through 12.2.11 RTU500 series CMU Firmware: Versions 12.4.1 through 12.4.11 RTU500 series CMU Firmware: Versions 12.6.1 through 12.6.9 RTU500 series CMU Firmware: Versions 12.7.1 through 12.7.6 RTU500 series CMU Firmware: Versions 13.2.1 through 13.2.6 RTU500 series CMU Firmware: Versions 13.4.1 through 13.4.3 RTU500 series CMU Firmware: Version 13.5.1 3.2 Vulnerability Overview 3.2.1 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') ...

The number of DDoS-related incidents targeting APIs have jumped by 30x compared with traditional Web assets, suggesting that attackers see the growing API landscape as the more attractive target.

An attacker can craft an input to the Parse functions that would be processed non-linearly with respect to its length, resulting in extremely slow parsing. This could cause a denial of service.

Uncontrolled Resource Consumption vulnerability in the examples web application provided with Apache Tomcat leads to denial of service. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.1, from 10.1.0-M1 through 10.1.33, from 9.0.0.M1 through 9.9.97. Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.

View CSAF 1. EXECUTIVE SUMMARY CVSS v3 5.3 ATTENTION: Exploitable remotely/low attack complexity Vendor: Hitachi Energy Equipment: TropOS Devices Series 1400/2400/6400 Vulnerability: Improper Input Validation 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following products of Hitachi Energy are affected: TropOS devices series 1400/2400/6400: All versions prior to 8.9.6 3.2 Vulnerability Overview 3.2.1 IMPROPER INPUT VALIDATION CWE-20 The monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows remote attackers to cause a denial of service (traffic amplification) via forged (1) REQ_MON_GETLIST or (2) REQ_MON_GETLIST_1 requests, as exploited in the wild in December 2013. CVE-2013-5211 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). 3....

View CSAF 1. EXECUTIVE SUMMARY CVSS v4 9.3 ATTENTION: Exploitable remotely/low attack complexity Vendor: Schneider Electric Equipment: Modicon M241 / M251 / M258 / LMC058 Vulnerability: Improper Input Validation 2. RISK EVALUATION Successful exploitation of this vulnerability could lead to a denial-of-service and a loss of confidentiality and integrity in the controller. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Schneider Electric reports that following Modicon PLCs are affected: Modicon Controllers M241: All versions Modicon Controllers M251: All versions Modicon Controllers M258: All versions Modicon Controllers LMC058: All versions 3.2 Vulnerability Overview 3.2.1 IMPROPER INPUT VALIDATION CWE-20 An improper input validation vulnerability exists that could lead to a denial-of-service and a loss of confidentiality and integrity in the controller when an unauthenticated crafted Modbus packet is sent to the device. CVE-2024-11737 has been assigned to this vulnerability. A CVSS v3 base...

View CSAF 1. EXECUTIVE SUMMARY CVSS v4 9.3 ATTENTION: Exploitable remotely/low attack complexity Vendor: Rockwell Automation Equipment: PowerMonitor 1000 Remote Vulnerabilities: Unprotected Alternate Channel, Heap-based Buffer Overflow, Classic Buffer Overflow 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to perform edit operations, create admin users, perform factory reset, execute arbitrary code, or cause a denial-of-service condition. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Rockwell Automation reports the following versions of PowerMonitor 1000 Remote are affected: PM1k 1408-BC3A-485: Versions prior to 4.020 PM1k 1408-BC3A-ENT: Versions prior to 4.020 PM1k 1408-TS3A-485: Versions prior to 4.020 PM1k 1408-TS3A-ENT: Versions prior to 4.020 PM1k 1408-EM3A-485: Versions prior to 4.020 PM1k 1408-EM3A-ENT: Versions prior to 4.020 PM1k 1408-TR1A-485: Versions prior to 4.020 PM1k 1408-TR2A-485: Versions prior to 4.020 PM1k 1408-EM1A-485: Vers...

The ABB Cylon Aspect BMS/BAS controller allows users to bypass authentication by setting the 'content' POST parameter. This enables an attacker to inject arbitrary configuration overrides, potentially leading to unauthorized changes and compromising system integrity. The vulnerability can be exploited to update the /usr/local/aam/etc/override.properties file. This file contains critical configuration overrides such as enabling overrides (Override.enabled=true) and setting specific properties like debug.level=1. The runjava.VARIANT* script then sources this file during execution, applying the overrides when the system reboots or the application restarts. This allows attackers to manipulate critical system settings, potentially causing performance degradation, introducing security risks, or resulting in a denial of service scenario.