SB20260427106 - Out-of-bounds read in opencc

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: N/A)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to disclose sensitive information and cause a denial of service.

The vulnerability exists due to out-of-bounds read in UTF-8 processing in MaxMatchSegmentation::Segment and Conversion::Convert(const char*) when processing malformed or truncated UTF-8 input. A remote attacker can send specially crafted UTF-8 input to disclose sensitive information and cause a denial of service.

In some cases, adjacent heap bytes may be propagated into the conversion result.

Remediation

Install update from vendor's website.

References

• https://github.com/BYVoid/OpenCC/security/advisories/GHSA-7fqq-q52p-2jjg
• https://github.com/advisories/GHSA-7fqq-q52p-2jjg