CVE-2013-5018

strongSwan 4.1.11-5.0.4 - Denial of Service via ASN.1 Length Integer Overflow

Title source: llm

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.

References (9)

Core 9

Core References

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/54315

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/61564

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/54524

Vendor Advisory x_refsource_confirm

http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html

Vendor Advisory x_refsource_confirm

http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html

Exploit mailing-list x_refsource_mlist

https://lists.strongswan.org/pipermail/users/2013-July/009540.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html

Scores

EPSS 0.0299

EPSS Percentile 85.7%

Details

CWE

CWE-119

Status published

Products (9)

opensuse/opensuse 11.4

opensuse/opensuse 12.2

opensuse/opensuse 12.3

strongswan/strongswan 4.1.11

strongswan/strongswan 5.0.0

strongswan/strongswan 5.0.1

strongswan/strongswan 5.0.2

strongswan/strongswan 5.0.3

strongswan/strongswan 5.0.4

Published Aug 28, 2013

Tracked Since Feb 18, 2026