CVE-2022-25309: gnu fribidi Heap-based Buffer Overflow

Vulnerability summary

CVE-2022-25309 is a medium (CVSS 5.5) Heap-based Buffer Overflow vulnerability in gnu fribidi. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 42.1% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 06-09-2022
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A heap-based buffer overflow flaw was found in the Fribidi package and affects the fribidi_cap_rtl_to_unicode() function of the fribidi-char-sets-cap-rtl.c file. This flaw allows an attacker to pass a specially crafted file to the Fribidi application with the '--caprtl' option, leading to a crash and causing a denial of service.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.