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CVE-2024-2961

Quick assessment

Affected
The GNU C Library glibc
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。 GNU C Library 2.39 及之前版本存在安全漏洞，该漏洞源于 iconv() 函数可能会缓冲区溢出，导致应用程序崩溃或覆盖相邻变量。

AI Predicted 5.5 Difficulty: Moderate EPSS 88.33% · P100

Affected Version Matrix 1

VendorProduct Version RangeStatus
The GNU C Library glibc 2.1.93< 2.40 affected
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I. Basic Information for CVE-2024-2961

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
GNU C Library 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。 GNU C Library 2.39 及之前版本存在安全漏洞，该漏洞源于 iconv() 函数可能会缓冲区溢出，导致应用程序崩溃或覆盖相邻变量。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
The GNU C Library glibc 2.1.93 ~ 2.40 -

II. Public POCs for CVE-2024-2961

# POC Description Source Link Shenlong Link
1 Quick mitigation script https://github.com/mattaperkins/FIX-CVE-2024-2961 POC Details
2 CVE-2024–2961 Security Issue Mitigation Script https://github.com/rvizx/CVE-2024-2961 POC Details
3 Exploits for CNEXT (CVE-2024-2961), a buffer overflow in the glibc's iconv() https://github.com/ambionics/cnext-exploits POC Details
4 Bash script to patch for CVE-2024-2961 https://github.com/absolutedesignltd/iconvfix POC Details
5 This repository contains a C program to test for CVE-2024-2961, a buffer overflow vulnerability in the iconv() function of glibc. https://github.com/exfil0/test_iconv POC Details
6 None https://github.com/tnishiox/cve-2024-2961 POC Details
7 None https://github.com/kjdfklha/CVE-2024-2961_poc POC Details
8 This script demonstrates a proof-of-concept (PoC) for exploiting a file read vulnerability in the iconv library, as detailed in Ambionics Security's blog https://www.ambionics.io/blog/iconv-cve-2024-2961-p1. https://github.com/kyotozx/CVE-2024-2961-Remote-File-Read POC Details
9 Uses CVE-2024-2961 to perform an arbitrary file read https://github.com/4wayhandshake/CVE-2024-2961 POC Details
10 CVE-2024-2961 Cnext RCE Exploit with Buddyforms 2.7.7 https://github.com/suce0155/CVE-2024-2961_buddyforms_2.7.7 POC Details
11 To use, implement the Remote class, which tells the exploit how to send the payload. https://github.com/regantemudo/PHP-file-read-to-RCE-CVE-2024-2961- POC Details
12 PHP Local File Read vulnerability leading to Remote Code Execution https://github.com/projectdiscovery/nuclei-templates/blob/main/dast/cves/2024/CVE-2024-2961.yaml POC Details
13 None https://github.com/Threekiii/Awesome-POC/blob/master/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80%E6%BC%8F%E6%B4%9E/PHP%20%E5%88%A9%E7%94%A8%20GNU%20C%20Iconv%20%E5%B0%86%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%8F%90%E5%8D%87%E8%87%B3%20RCE%20CVE-2024-2961.md POC Details
14 https://github.com/vulhub/vulhub/blob/master/php/CVE-2024-2961/README.md POC Details
15 Exploits for CNEXT (CVE-2024-2961), a buffer overflow in the glibc's iconv() https://github.com/scriptSails/glibcs POC Details
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III. Intelligence Information for CVE-2024-2961

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Vendor Advisories for CVE-2024-2961 (1)

Mailing List Discussions for CVE-2024-2961 (14)

Other References for CVE-2024-2961 (1)

IV. Related Vulnerabilities

Same product: glibc
Same vendor: The GNU C Library
Same weakness: CWE-787

V. Comments for CVE-2024-2961

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