55420 : strongSwan ASN.1 Parser Crafted X.509 Certificate RDN IKE Daemon Remote DoS
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Timeline

Disclosure Date
2009-06-22

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2009-2185" target="_blank">CVE</a>)</em> : The ASN.1 parser (pluto/asn1.c, libstrongswan/asn1/asn1.c, libstrongswan/asn1/asn1_parser.c) in (a) strongSwan 2.8 before 2.8.10, 4.2 before 4.2.16, and 4.3 before 4.3.2; and (b) openSwan 2.6 before 2.6.22 and 2.4 before 2.4.15 allows remote attackers to cause a denial of service (pluto IKE daemon crash) via an X.509 certificate with (1) crafted Relative Distinguished Names (RDNs), (2) a crafted UTCTIME string, or (3) a crafted GENERALIZEDTIME string.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service, Input Manipulation
Impact: Loss of Availability
Solution: Upgrade
Disclosure: Vendor Verified

Solution

Upgrade to version 2.8.10, 4.2.16, 4.3.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Unknown or Incomplete

References

Security Tracker: 1022428
CVE ID: 2009-2185 (see also: NVD) 2009-2661 (see also: NVD)
Bugtraq ID: 35452
Secunia Advisory ID: 35522 35698 35740 35804 36268 36275 36688 36922 36950 37307
Vendor Specific Solution URL: ftp://ftp.astaro.de/pub/ASG/v7/up2date/u2d-sys-7.404.tgz.gpg ftp://ftp.astaro.de/pub/ASG/v7/up2date/u2d-sys-7.405.tgz.gpg
Vendor Specific News/Changelog Entry: http://download.strongswan.org/CHANGES2.txt
http://download.strongswan.org/CHANGES4.txt
http://download.strongswan.org/CHANGES4.txt
http://download.strongswan.org/CHANGES42.txt
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch
http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch
http://lists.debian.org/debian-security-announce/2009/msg00219.html
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00264.html
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00337.html
Other Advisory URL: http://download.strongswan.org/patches/05_asn1_rdn_patch/strongswan-2.x.x_asn1_rdn.readme
http://up2date.astaro.com/2009/07/up2date_7404_released.html
http://www.openwall.com/lists/oss-security/2009/07/27/1
http://www.vupen.com/english/advisories/2009/1639
https://lists.strongswan.org/pipermail/announce/2009-July/000056.html
Vendor Specific Advisory URL: http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00005.html
http://up2date.astaro.com/2009/08/up2date_7505_released.html
http://www.gentoo.org/security/en/glsa/glsa-200909-05.xml
http://www.us.debian.org/security/2009/dsa-1899
Vendor URL: http://www.strongswan.org/
RedHat RHSA: https://rhn.redhat.com/errata/RHSA-2009-1138.html

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2009-08-05 | Disagree? | There are 1 more: View All

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