CVE-2013-0800

CVE-2013-0800 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 4% (89th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Mozilla Firefox
• Published: 2013-04-03
• Last modified: 2026-06-16

Description

Integer signedness error in the pixman_fill_sse2 function in pixman-sse2.c in Pixman, as distributed with Cairo and used in Mozilla Firefox before 20.0, Firefox ESR 17.x before 17.0.5, Thunderbird before 17.0.5, Thunderbird ESR 17.x before 17.0.5, SeaMonkey before 2.17, and other products, allows remote attackers to execute arbitrary code via crafted values that trigger attempted use of a (1) negative box boundary or (2) negative box size, leading to an out-of-bounds write operation.

Frequently asked questions

What is CVE-2013-0800?

Integer signedness error in the pixman_fill_sse2 function in pixman-sse2.c in Pixman, as distributed with Cairo and used in Mozilla Firefox before 20.0, Firefox ESR 17.x before 17.0.5, Thunderbird before 17.0.5, Thunderbird ESR 17.x before 17.0.5, SeaMonkey before 2.17, and other products, allows remote attackers to execute arbitrary code via crafted values that trigger attempted use of a (1) negative box boundary or (2) negative box size, leading to an out-of-bounds write operation.

How severe is CVE-2013-0800?

CVE-2013-0800 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2013-0800 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-0800?

CVE-2013-0800 primarily affects Mozilla Firefox. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-0800?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-0800 published?

CVE-2013-0800 was published on 2013-04-03 and last updated on 2026-06-16.

References

• http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00013.html
• http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00019.html
• http://lists.opensuse.org/opensuse-updates/2013-06/msg00012.html
• http://rhn.redhat.com/errata/RHSA-2013-0696.html
• http://rhn.redhat.com/errata/RHSA-2013-0697.html
• http://www.debian.org/security/2013/dsa-2699
• http://www.mozilla.org/security/announce/2013/mfsa2013-31.html
• http://www.ubuntu.com/usn/USN-1791-1
• https://bugzilla.mozilla.org/show_bug.cgi?id=825721
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16909

Affected products (22)

• cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:12.1:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_desktop:10:sp4:*:*:-:*:*:*
• cpe:2.3:o:suse:linux_enterprise_desktop:11:sp2:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:-:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:ltss:-:*:*
• cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:ltss:vmware:*:*
• cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:*:-:*:*
• cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:*:vmware:*:*
• cpe:2.3:o:suse:linux_enterprise_software_development_kit:10:sp4:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp2:*:*:*:*:*:*

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