CVE-2023-52389
UTF32Encoding.cpp in POCO has a Poco::UTF32Encoding integer overflow and resultant stack buffer overflow because Poco::UTF32Encoding::convert() and Poco::UTF32::queryConvert() may return a negative integer if a UTF-32 byte sequence evaluates to a value…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
UTF32Encoding.cpp in POCO has a Poco::UTF32Encoding integer overflow and resultant stack buffer overflow because Poco::UTF32Encoding::convert() and Poco::UTF32::queryConvert() may return a negative integer if a UTF-32 byte sequence evaluates to a value of 0x80000000 or higher. This is fixed in 1.11.8p2, 1.12.5p2, and 1.13.0.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.85% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- pocoproject/poco
- Source
- cve@mitre.org
References
- https://github.com/pocoproject/poco/compare/poco-1.12.5p2-release...poco-1.13.0-releasePatch
- https://github.com/pocoproject/poco/issues/4320Patch
- https://pocoproject.org/blog/?p=1226Release Notes
- https://github.com/pocoproject/poco/compare/poco-1.12.5p2-release...poco-1.13.0-releasePatch
- https://github.com/pocoproject/poco/issues/4320Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00017.html
- https://pocoproject.org/blog/?p=1226Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.