CVE-2012-2134 Denial of service in n/a
Remote attackers can cause a denial of service in bind-dyndb-ldap by sending a malformed LDAP search query, hanging the named server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-2134?
CVE-2012-2134 is a medium-severity denial of service vulnerability in n/a, published on 26 Feb 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The handle_connection_error function in ldap_helper.c in bind-dyndb-ldap before 1.1.0rc1 does not properly handle LDAP query errors, which allows remote attackers to cause a denial of service (infinite loop and named server hang) via a non-alphabet character in the base DN in an LDAP search DNS query.
Weakness: CWE-399
Which versions are affected by CVE-2012-2134?
It affects 1 product.
Linux distribution packages (4)
bind-dyndb-ldap Red Hat:enterprise_linux:6::server | All versions | 0:0.2.0-7.el6_2.1 |
bind-dyndb-ldap-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:0.2.0-7.el6_2.1 |
bind-dyndb-ldap Red Hat:enterprise_linux:6::workstation | All versions | 0:0.2.0-7.el6_2.1 |
bind-dyndb-ldap-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 0:0.2.0-7.el6_2.1 |
Products include Martin Nagy Bind-Dyndb-Ldap.
How do I fix CVE-2012-2134?
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-2012-2134 being exploited?
There is no known exploitation of CVE-2012-2134 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cq5c-cr6p-vfwm, RHSA-2012:0683.