Description
ClamAV before 0.91.2, as used in Kolab Server 2.0 through 2.2beta1 and other products, allows remote attackers to cause a denial of service (application crash) via (1) a crafted RTF file, which triggers a NULL dereference in the cli_scanrtf function in libclamav/rtf.c; or (2) a crafted HTML document with a data: URI, which triggers a NULL dereference in the cli_html_normalise function in libclamav/htmlnorm.c. NOTE: some of these details are obtained from third party information.
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 | 0.91.2-1~volatile1 | — |
| Debian 13 | clamav | 0.91.2-1~volatile1 | — |
| Debian 12 | clamav | 0.91.2-1~volatile1 | — |
| Debian 4.0 | clamav | 0.90.1-3etch7 | DSA-1366-1 |
Advisories 1
- DSA-1366-1 clamav Debian Security (DSA / DLA) · Mar 9, 2026
References
- clamav-rtf-dos(36173) vdb-entry
- GLSA-200709-14 vendor-advisory
- 26552 third-party-advisory
- 26822 third-party-advisory
- 26916 third-party-advisory
- 25398 vdb-entry
- 26683 third-party-advisory
- FEDORA-2007-2050 vendor-advisory
- DSA-1366 vendor-advisory
- http://kolab.org/security/kolab-vendor-notice-17.txt
- 3054 third-party-advisory
- ADV-2008-0924 vdb-entry
- 26530 third-party-advisory
- https://wwws.clamav.net/bugzilla/show_bug.cgi?id=611
- 2007-0026 vendor-advisory
- 29420 third-party-advisory
- SUSE-SR:2007:018 vendor-advisory
- APPLE-SA-2008-03-18 vendor-advisory
- https://wwws.clamav.net/bugzilla/show_bug.cgi?id=582
- 26751 third-party-advisory
- 26654 third-party-advisory
- clamav-clihtmlnormalise-dos(36177) vdb-entry
- http://docs.info.apple.com/article.html?artnum=307562
- MDKSA-2007:172 vendor-advisory
- http://sourceforge.net/project/shownotes.php?release_id=533658
- ADV-2007-2952 vdb-entry
- 26674 third-party-advisory