Multiple integer overflows in the (1) PL_Base64Decode and (2) PL_Base64Encode functions in nsprpub/lib/libc/src/base64.c in Mozilla Firefox before 3.0.12, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger buffer overflows.
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01032.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10369
https://bugzilla.mozilla.org/show_bug.cgi?id=492779
http://www.vupen.com/english/advisories/2010/0650
http://www.vupen.com/english/advisories/2010/0648
http://www.vupen.com/english/advisories/2009/2152
http://www.vupen.com/english/advisories/2009/1972
http://www.ubuntu.com/usn/USN-915-1
http://www.securityfocus.com/bid/35758
http://www.redhat.com/support/errata/RHSA-2010-0154.html
http://www.redhat.com/support/errata/RHSA-2010-0153.html
http://www.mozilla.org/security/announce/2010/mfsa2010-07.html
http://www.mozilla.org/security/announce/2009/mfsa2009-34.html
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020800.1-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-265068-1
http://secunia.com/advisories/39001
http://secunia.com/advisories/38977
http://secunia.com/advisories/36145
http://secunia.com/advisories/36005
http://secunia.com/advisories/35947
http://secunia.com/advisories/35944
http://secunia.com/advisories/35943
http://secunia.com/advisories/35914
http://rhn.redhat.com/errata/RHSA-2009-1163.html
http://rhn.redhat.com/errata/RHSA-2009-1162.html
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00005.html