CVE-2009-2661 Denial of service in n/a
Remote attackers can crash the strongSwan IKE daemon by sending malformed ASN.1 data in X.509 certificates, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2009-2661?
CVE-2009-2661 is a medium-severity denial of service vulnerability in n/a, published on 4 Aug 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The asn1_length function in strongSwan 2.8 before 2.8.11, 4.2 before 4.2.17, and 4.3 before 4.3.3 does not properly handle X.509 certificates with crafted Relative Distinguished Names (RDNs), which allows remote attackers to cause a denial of service (pluto IKE daemon crash) via malformed ASN.1 data. NOTE: this is due to an incomplete fix for CVE-2009-2185.
Weakness: CWE-310
Which versions are affected by CVE-2009-2661?
It affects 1 product.
Products include Strongswan Strongswan.
How do I fix CVE-2009-2661?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2009-2661 being exploited?
There is no known exploitation of CVE-2009-2661 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2009-2661, GHSA-7j3p-ffqc-xjpg.