Description
Off-by-one buffer overflow in pnmtopng before 2.39, when using the -alpha command line option (Alphas_Of_Color), allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PNM file with exactly 256 colors.
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 ↗Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | netpbm +2 | 9.24-11.30.4 | RHSA-2005:843 |
Advisories 2
- RHSA-2005:843 Red Hat Security Advisory: netpbm security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-904-1 netpbm-free - buffer overflows Debian Security (DSA / DLA) · Mar 9, 2026
References
- oval:org.mitre.oval:def:9583 vdb-entry signature
- SUSE-SR:2005:028 vendor-advisory
- RHSA-2005:843 vendor-advisory
- 15427 vdb-entry
- 17544 third-party-advisory
- http://sourceforge.net/project/shownotes.php?release_id=370545
- ADV-2005-2418 vdb-entry
- MDKSA-2005:217 vendor-advisory
- 17679 third-party-advisory
- 17828 third-party-advisory
- 18186 third-party-advisory
- 18517 third-party-advisory
- 17671 third-party-advisory
- USN-218-1 vendor-advisory
- DSA-904 vendor-advisory