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Test ID:1.3.6.1.4.1.25623.1.0.702789
Category:Debian Local Security Checks
Title:Debian Security Advisory DSA 2789-1 (strongswan - Denial of service and authorization bypass)
Summary:A vulnerability has been found in the ASN.1 parser of strongSwan, an IKE;daemon used to establish IPsec protected links.;;By sending a crafted ID_DER_ASN1_DN ID payload to a vulnerable pluto or;charon daemon, a malicious remote user can provoke a denial of service;(daemon crash) or an authorization bypass (impersonating a different;user, potentially acquiring VPN permissions she doesn't have).
Description:Summary:
A vulnerability has been found in the ASN.1 parser of strongSwan, an IKE
daemon used to establish IPsec protected links.

By sending a crafted ID_DER_ASN1_DN ID payload to a vulnerable pluto or
charon daemon, a malicious remote user can provoke a denial of service
(daemon crash) or an authorization bypass (impersonating a different
user, potentially acquiring VPN permissions she doesn't have).

Affected Software/OS:
strongswan on Debian Linux

Solution:
For the oldstable distribution (squeeze), this problem has been fixed in
version 4.4.1-5.4.

For the stable distribution (wheezy), this problem has been fixed in
version 4.5.2-1.5+deb7u2.

For the testing distribution (jessie), this problem has been fixed in
version 5.1.0-3.

For the unstable distribution (sid), this problem has been fixed in
version 5.1.0-3.

We recommend that you upgrade your strongswan packages.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-6075
Debian Security Information: DSA-2789 (Google Search)
http://www.debian.org/security/2012/dsa-2789
http://download.strongswan.org/security/CVE-2013-6075/strongswan-4.3.3-5.1.0_id_dn_match.patch
CopyrightCopyright (C) 2013 Greenbone Networks GmbH http://greenbone.net

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