SB2011010707 - Stack-based buffer overflow in OpenSC

Description

This security bulletin contains information about 1 security vulnerability.

1) Stack-based buffer overflow (CVE-ID: CVE-2010-4523)

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.

Remediation

Install update from vendor's website.

References

• 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