CVE-2013-5018

Published: Aug 28, 2013Modified: Apr 29, 2026

4.3

Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Exploitability: 8.6 / Impact: 2.9

Source: NVD

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 (9)

Products: Strongswan: Strongswan · Opensuse: Opensuse

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Strongswan Strongswan	Version 4.1.11

Configuration B

5 vulnerable

Vulnerable Software	Affected Versions
Strongswan Strongswan	Version 5.0.0
Strongswan Strongswan	Version 5.0.1
Strongswan Strongswan	Version 5.0.2
Strongswan Strongswan	Version 5.0.3
Strongswan Strongswan	Version 5.0.4

Configuration C

3 vulnerable

Vulnerable Software	Affected Versions
Opensuse Opensuse	Version 11.4
Opensuse Opensuse	Version 12.2
Opensuse Opensuse	Version 12.3

Related CWEs

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (18)

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

Source: cve@mitre.org

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

Source: cve@mitre.org

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

Source: cve@mitre.org

http://secunia.com/advisories/54315

Source: cve@mitre.org

Vendor Advisory

http://secunia.com/advisories/54524

Source: cve@mitre.org

Vendor Advisory

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

Source: cve@mitre.org

Vendor Advisory

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

Source: cve@mitre.org

Vendor Advisory

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

Source: cve@mitre.org

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

Source: cve@mitre.org

Exploit

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

Source: af854a3a-2127-422b-91ae-364da2661108

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

Source: af854a3a-2127-422b-91ae-364da2661108

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

Source: af854a3a-2127-422b-91ae-364da2661108

http://secunia.com/advisories/54315

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

http://secunia.com/advisories/54524

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

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

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit

Timeline

No history available yet.