Vulnerability identifier: #VU45486

Vulnerability risk: High

CVSSv3.1: 7.3 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2010-4523

CWE-ID: CWE-121

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OpenSC
Universal components / Libraries / Libraries used by multiple products

Vendor: OpenSC

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenSC: 0.3.2 - 0.11.12

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External links
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
http://bugs.launchpad.net/ubuntu/+source/opensc/+bug/692483
http://bugzilla.redhat.com/show_bug.cgi?id=664831
http://www.opensc-project.org/opensc/changeset/4913

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.