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 handle character bitmaps it cannot read, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a crafted BDF font file.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1803
Reference (s):
- BID:73280
- URL: http://www.securityfocus.com/bid/73280
- http://advisories.mageia.org/MGASA-2015-0113.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html