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CVE-2009-5018

36
FAUCET Score

CVE-2009-5018 describes a stack-based buffer overflow vulnerability in gif2png versions 2.5.3 and earlier, affecting the catb gif2png product. This vulnerability allows context-dependent attackers to execute arbitrary code by providing a long command-line argument, particularly when gif2png is launched by a CGI program. With a CVSS score of 6.8 (medium severity), it requires medium attack complexity over a network and can lead to partial confidentiality, integrity, and availability compromise. While not listed in CISA's KEV catalog, an exploit for version 2.5.2 exists on ExploitDB, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.3CPE matchmatch criteria
cpe:2.3:a:catb:gif2png:*:*:*:*:*:*:*:*
0.99CPE matchmatch criteria
cpe:2.3:a:catb:gif2png:0.99:*:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:catb:gif2png:1.0.0:*:*:*:*:*:*:*
1.1.0CPE matchmatch criteria
cpe:2.3:a:catb:gif2png:1.1.0:*:*:*:*:*:*:*
1.1.1CPE matchmatch criteria
cpe:2.3:a:catb:gif2png:1.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
10.90%
Probability of exploitation in next 30 days
EPSS Percentile
95.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-34356 · Dec 12, 2009
This CVE's current EPSS score of 0.1090 is in the 95th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

fedorapatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2009-5018Low

gif2png: command-line buffer overflow problem

Oct 14, 2009

References

bugs.debian.org / cgi-bin/bugreport.cgi
Patch
bugs.gentoo.org / show_bug.cgi
cvs.fedoraproject.org / viewvc/rpms/gif2png/devel/gif2png-overflow.patch
Patch
lists.fedoraproject.org / pipermail/package-announce/2010-November/051229.html
Patch
lists.grok.org.uk / pipermail/full-disclosure/2009-December/072009.html
Patch
openwall.com / lists/oss-security/2010/11/21/1
Patch
openwall.com / lists/oss-security/2010/11/22/1
Patch
openwall.com / lists/oss-security/2010/11/22/12
openwall.com / lists/oss-security/2010/11/22/3
bugzilla.redhat.com / show_bug.cgi
ExploitPatch
secunia.com / advisories/42796
Vendor Advisory
security.gentoo.org / glsa/glsa-201101-01.xml
exchange.xforce.ibmcloud.com / vulnerabilities/64820
mandriva.com / security/advisories
securityfocus.com / bid/41801
vupen.com / english/advisories/2010/3036
Vendor Advisory
vupen.com / english/advisories/2011/0023
Vendor Advisory
vupen.com / english/advisories/2011/0107