glibc iconv() OOB Buffer Overflow up to 4 bytes (2.39)
CVE-2024-2961 Published on April 17, 2024
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.
Vulnerability Analysis
CVE-2024-2961 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2024-2961. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2024-2961 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2024-2961
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2024-2961 are published in these products:
Affected Versions
The GNU C Library glibc:- Version 2.1.93 and below 2.40 is affected.
- Version 2.1.93 and below 2.40 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.