VulnerabilityModified
CVE-2023-29421
There is an out-of-bounds write in bz3_decode_block.
HIGH 8.8EPSS 0.92%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.92%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in libbzip3.a in bzip3 before 1.2.3. There is an out-of-bounds write in bz3_decode_block.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.92% probability · 58th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- bzip3 project/bzip3
- Source
- cve@mitre.org
References
- https://github.com/kspalaiologos/bzip3/compare/1.2.2...1.2.3Release Notes
- https://github.com/kspalaiologos/bzip3/issues/94Exploit, Issue Tracking, Patch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/
- https://github.com/kspalaiologos/bzip3/compare/1.2.2...1.2.3Release Notes
- https://github.com/kspalaiologos/bzip3/issues/94Exploit, Issue Tracking, Patch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JLSE25SV7K2NB6FTFT4UHJOJUHBHYHY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NA7S7HDUAINOTCSWQZ5LIW756DYY22V2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMLFV2FJK3CM7NJLVPZI5RUAFQZICPWW/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.