Description
The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://secunia.com/advisories/54315 ↗
- http://www.securityfocus.com/bid/61564 ↗
- http://secunia.com/advisories/54524 ↗
- http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html ↗
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html ↗
- http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html ↗
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html ↗
- https://lists.strongswan.org/pipermail/users/2013-July/009540.html ↗
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html ↗