Description
libclamav/untar.c in ClamAV before 0.95 allows remote attackers to cause a denial of service (infinite loop) via a crafted TAR file that causes (1) clamd and (2) clamscan to hang.
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 | 0.95.1+dfsg-1 | — |
| Debian 13 | clamav | 0.95.1+dfsg-1 | — |
| Debian 12 | clamav | 0.95.1+dfsg-1 | — |
| Debian 5.0 | clamav | 0.94.dfsg.2-1lenny2 | DSA-1771-1 |
| Debian 4.0 | clamav | 0.90.1dfsg-4etch19 | DSA-1771-1 |
Advisories 1
- DSA-1771-1 clamav - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- clamav-untar-dos(49846) vdb-entry
- 34357 vdb-entry
- https://wwws.clamav.net/bugzilla/show_bug.cgi?id=1462
- 34716 third-party-advisory
- 53461 vdb-entry
- MDVSA-2009:097 vendor-advisory
- ADV-2009-0934 vdb-entry
- APPLE-SA-2009-09-10-2 vendor-advisory
- DSA-1771 vendor-advisory
- [oss-security] 20090407 Re: CVE request: clamav clamd and clamscan DoS and bypass by malformated archive mailing-list
- http://support.apple.com/kb/HT3865
- 36701 third-party-advisory
- USN-754-1 vendor-advisory