National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2013-5018 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:strongswan:strongswan:4.1.11:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2013-5018
NVD Published Date:
08/28/2013
NVD Last Modified:
10/30/2018