CVE-2013-5018

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.

CVSS v2.0 4.3 MEDIUM

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html
http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html	Vendor Advisory
http://secunia.com/advisories/54524	Vendor Advisory
http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html	Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html
http://secunia.com/advisories/54315	Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html
https://lists.strongswan.org/pipermail/users/2013-July/009540.html	Exploit
http://www.securityfocus.com/bid/61564

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Configurations

Configuration 1 (hide)

cpe:2.3:a:strongswan:strongswan:4.1.11:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:strongswan:strongswan:5.0.2:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.1:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.3:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.4:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.0:::::::*

Configuration 3 (hide)

OR	cpe:2.3:o:opensuse:opensuse:12.2:::::::*
	cpe:2.3:o:opensuse:opensuse:12.3:::::::*
	cpe:2.3:o:opensuse:opensuse:11.4:::::::*

Information

Published : 2013-08-28 16:55

Updated : 2018-10-30 09:27

NVD link : CVE-2013-5018

Mitre link : CVE-2013-5018

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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Products Affected

strongswan

strongswan

opensuse

opensuse

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