SB2013110202 - Multiple vulnerabilities in strongSwan
Published: November 2, 2013 Updated: April 29, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2014-2891)
The vulnerability allows remote attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and IKE daemon crash) via a crafted ID_DER_ASN1_DN ID payload. Per: http://www.strongswan.org/blog/2014/05/05/strongswan-denial-of-service-vulnerability-%28cve-2014-2891%29.html "Based on a crash report from one of our users we found that strongSwan versions before 5.1.2 are susceptible to a DoS vulnerability. Affected are strongSwan versions 4.3.3 and newer, up to 5.1.1.
2) Input validation error (CVE-ID: CVE-2013-6075)
The vulnerability allows (1) remote attackers to cause a denial of service (out-of-bounds read, NULL pointer dereference, and daemon crash) or (2) remote authenticated users to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can impersonate arbitrary users and bypass access restrictions via a crafted ID_DER_ASN1_DN ID, related to an "insufficient length check" during identity comparison.
3) Input validation error (CVE-ID: CVE-2013-6076)
The vulnerability allows remote attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and charon daemon crash) via a crafted IKEv1 fragmentation packet.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00064.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00066.html
- http://secunia.com/advisories/59864
- http://www.debian.org/security/2014/dsa-2922
- http://www.securityfocus.com/bid/67212
- http://www.strongswan.org/blog/2014/05/05/strongswan-denial-of-service-vulnerability-(cve-2014-2891).html
- http://download.strongswan.org/security/CVE-2013-6075/strongswan-4.3.3-5.1.0_id_dn_match.patch
- http://www.debian.org/security/2012/dsa-2789
- http://www.strongswan.org/blog/2013/11/01/strongswan-denial-of-service-vulnerability-%28cve-2013-6075%29.html
- http://www.strongswan.org/blog/2013/11/01/strongswan-denial-of-service-vulnerability-%28cve-2013-6076%29.html