Description
The TAR file parser in Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast! Antivirus 4.8.1351.0 and 5.0.677.0, AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Quick Heal (aka Cat QuickHeal) 11.00, ClamAV 0.96.4, Command Antivirus 5.2.11.5, Emsisoft Anti-Malware 5.1.0.1, eSafe 7.0.17.0, F-Prot Antivirus 4.6.2.117, G Data AntiVirus 21, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Jiangmin Antivirus 13.0.900, K7 AntiVirus 9.77.3565, Kaspersky Anti-Virus 7.0.0.125, McAfee Anti-Virus Scanning Engine 5.400.0.1158, McAfee Gateway (formerly Webwasher) 2010.1C, Antimalware Engine 1.1.6402.0 in Microsoft Security Essentials 2.0, NOD32 Antivirus 5795, Norman Antivirus 6.06.12, PC Tools AntiVirus 7.0.3.5, Rising Antivirus 22.83.00.03, AVEngine 20101.3.0.103 in Symantec Endpoint Protection 11, Trend Micro AntiVirus 9.120.0.1004, Trend Micro HouseCall 9.120.0.1004, VBA32 3.12.14.2, and VirusBuster 13.6.151.0 allows remote attackers to bypass malware detection via a TAR archive entry with a length field that exceeds the total TAR file size. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different TAR parser implementations.
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 | 0.97.5+dfsg-1 | — |
| Debian 13 | clamav | 0.97.5+dfsg-1 | — |
| Debian 12 | clamav | 0.97.5+dfsg-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 0.99.2-4.1 | openSUSE-SU-2024:10571-1 |
Advisories 1
- openSUSE-SU-2024:10571-1 clamav-0.99.2-4.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- openSUSE-SU-2012:0833 vendor-advisory
- 80406 vdb-entry
- 80393 vdb-entry
- 20120319 Evasion attacks expoliting file-parsing vulnerabilities in antivirus products mailing-list
- 80403 vdb-entry
- 80389 vdb-entry
- 80391 vdb-entry
- 80409 vdb-entry
- 80396 vdb-entry
- 80392 vdb-entry
- http://www.ieee-security.org/TC/SP2012/program.html
- MDVSA-2012:094 vendor-advisory
- 52610 vdb-entry
- 80407 vdb-entry
- 80395 vdb-entry
- multiple-av-tar-length-evasion(74293) vdb-entry