The bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 does not properly perform type conversion for metrics values, which allows remote authenticated users to cause a denial of service (out-of-bounds memory access) and possibly execute arbitrary code via a crafted BDF font file.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-1804
• https://security.gentoo.org/glsa/201507-21
• http://advisories.mageia.org/MGASA-2015-0113.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152497.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152838.html
• http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00032.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00005.html
• http://lists.opensuse.org/opensuse-updates/2015-12/msg00074.html
• http://rhn.redhat.com/errata/RHSA-2015-1708.html
• http://www.debian.org/security/2015/dsa-3194
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:145
• http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
• http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
• http://www.securityfocus.com/bid/73279
• http://www.securitytracker.com/id/1031935
• http://www.ubuntu.com/usn/USN-2536-1
• http://www.x.org/wiki/Development/Security/Advisory-2015-03-17