Description
Off-by-one error in the get_unicode_name function (libclamav/vba_extract.c) in Clam Anti-Virus (ClamAV) before 0.94.1 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted VBA project file, which triggers a heap-based buffer overflow.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | clamav | 0.94.dfsg.1-1 | — |
| Debian 13 | clamav | 0.94.dfsg.1-1 | — |
| Debian 12 | clamav | 0.94.dfsg.1-1 | — |
| Debian 4.0 | clamav | 0.90.1dfsg-4etch16 | DSA-1680-1 |
Advisories 1
- DSA-1680-1 clamav - potential code execution Debian Security (DSA / DLA) · Mar 9, 2026
References
- ADV-2008-3085 vdb-entry
- 4579 third-party-advisory
- 33937 third-party-advisory
- DSA-1680 vendor-advisory
- 32765 third-party-advisory
- clamav-getunicodename-bo(46462) vdb-entry
- 32207 vdb-entry
- 33016 third-party-advisory
- http://support.apple.com/kb/HT3438
- 20081109 ClamAV get_unicode_name() off-by-one buffer overflow mailing-list
- APPLE-SA-2009-02-12 vendor-advisory
- 1021159 vdb-entry
- 32872 third-party-advisory
- GLSA-200812-21 vendor-advisory
- 20081108 ClamAV get_unicode_name() off-by-one buffer overflow mailing-list
- FEDORA-2008-9651 vendor-advisory
- http://sourceforge.net/project/shownotes.php?release_id=637952&group_id=86638
- ADV-2009-0422 vdb-entry
- USN-672-1 vendor-advisory
- 32663 third-party-advisory
- MDVSA-2008:229 vendor-advisory
- 33317 third-party-advisory
- SUSE-SR:2008:026 vendor-advisory
- 32699 third-party-advisory
- FEDORA-2008-9644 vendor-advisory