Description
ClamAV 0.92 allows local users to overwrite arbitrary files via a symlink attack on (1) temporary files used by the cli_gentempfd function in libclamav/others.c or on (2) .ascii files used by sigtool, when utf16-decode is enabled.
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 | 0.92.1~dfsg-1 | — |
| Debian 13 | clamav | 0.92.1~dfsg-1 | — |
| Debian 12 | clamav | 0.92.1~dfsg-1 | — |
| Debian 4.0 | clamav | 0.90.1dfsg-3etch10 | DSA-1497-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 0.103.3-1.4 | openSUSE-SU-2024:10685-1 |
Advisories 2
- DSA-1497-1 clamav - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10685-1 clamav-0.103.3-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- MDVSA-2008:088 vendor-advisory
- 1019148 vdb-entry
- clamantivirus-cligentempfd-symlink(39335) vdb-entry
- 3501 third-party-advisory
- 31437 third-party-advisory
- 29891 third-party-advisory
- 28949 third-party-advisory
- DSA-1497 vendor-advisory
- 27064 vdb-entry
- ADV-2008-0606 vdb-entry
- GLSA-200808-07 vendor-advisory
- clamantivirus-sigtool-file-overwrite(39339) vdb-entry
- SUSE-SA:2008:024 vendor-advisory
- http://kolab.org/security/kolab-vendor-notice-19.txt
- 20071229 TK53 Advisory #2: Multiple vulnerabilities in ClamAV mailing-list