CVE-2016-2167 Auth bypass in n/a
Remote attackers can bypass authentication and access restricted repositories by exploiting a prefix matching flaw in Cyrus SASL realm validation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-2167?
CVE-2016-2167 is a medium-severity authentication bypass vulnerability in n/a, published on 5 May 2016. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.
Weakness: CWE-284
Which versions are affected by CVE-2016-2167?
It affects 1 product.
Products include Apache Subversion.
How do I fix CVE-2016-2167?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2016-2167 being exploited?
There is no known exploitation of CVE-2016-2167 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2017-9800 A maliciously constructed svn+ssh:// URL would cause Subversion clients before 1.8.19, 1.9.x before 1.9.7, and 1.10.0.x through 1.10.0-alpha
- CVE-2013-4246 Denial of service in n/a
- CVE-2015-5259 Integer overflow in n/a
- CVE-2024-45720 Apache Subversion: Command line argument injection on Windows platforms
- CVE-2015-0202 Denial of service in n/a
Sources
Also known as DEBIAN-CVE-2016-2167, GHSA-4j43-22vc-mh3h, UBUNTU-CVE-2016-2167.