Stack-based buffer overflow in OpenSC - CVE-2010-4523

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing a long serial-number field on a smart card, related to (1) card-acos5.c, (2) card-atrust-acos.c, and (3) card-starcos.c. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

How to mitigate CVE-2010-4523

Sources

• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607427
• http://labs.mwrinfosecurity.com/files/Advisories/mwri_opensc-get-serial-buffer-overflow_2010-12-13.pdf
• http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052777.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052796.html
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
• http://openwall.com/lists/oss-security/2010/12/21/2
• http://openwall.com/lists/oss-security/2010/12/22/3
• http://secunia.com/advisories/42658
• http://secunia.com/advisories/42807
• http://secunia.com/advisories/43068
• http://www.h-online.com/open/news/item/When-a-smart-card-can-root-your-computer-1154829.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2011:011
• http://www.securityfocus.com/bid/45435
• http://www.vupen.com/english/advisories/2011/0009
• http://www.vupen.com/english/advisories/2011/0109
• http://www.vupen.com/english/advisories/2011/0212
• https://bugs.launchpad.net/ubuntu/+source/opensc/+bug/692483
• https://bugzilla.redhat.com/show_bug.cgi?id=664831
• https://www.opensc-project.org/opensc/changeset/4913