CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
AI Score
Confidence
High
EPSS
Percentile
92.3%
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.
Vendor | Product | Version | CPE |
---|---|---|---|
strongswan | strongswan | 4.1.11 | cpe:2.3:a:strongswan:strongswan:4.1.11:*:*:*:*:*:*:* |
strongswan | strongswan | 5.0.0 | cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:* |
strongswan | strongswan | 5.0.1 | cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:* |
strongswan | strongswan | 5.0.2 | cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:* |
strongswan | strongswan | 5.0.3 | cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:* |
strongswan | strongswan | 5.0.4 | cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:* |
opensuse | opensuse | 11.4 | cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:* |
opensuse | opensuse | 12.2 | cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:* |
opensuse | opensuse | 12.3 | cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:* |
lists.opensuse.org/opensuse-updates/2013-08/msg00021.html
lists.opensuse.org/opensuse-updates/2013-08/msg00022.html
lists.opensuse.org/opensuse-updates/2013-08/msg00050.html
secunia.com/advisories/54315
secunia.com/advisories/54524
strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html
strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html
www.securityfocus.com/bid/61564
lists.strongswan.org/pipermail/users/2013-July/009540.html