CVE-2012-3429 Denial of service in n/a
Remote DNS servers can cause a denial of service in bind-dyndb-ldap by sending a DNS query with a specific character in the distinguished name.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-3429?
CVE-2012-3429 is a medium-severity denial of service vulnerability in n/a, published on 7 Aug 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The dns_to_ldap_dn_escape function in src/ldap_convert.c in bind-dyndb-ldap 1.1.0rc1 and earlier does not properly escape distinguished names (DN) for LDAP queries, which allows remote DNS servers to cause a denial of service (named service hang) via a "$" character in a DN in a DNS query.
Weakness: CWE-20
Which versions are affected by CVE-2012-3429?
It affects 1 product.
Linux distribution packages (4)
bind-dyndb-ldap Red Hat:enterprise_linux:6::server | All versions | 0:1.1.0-0.9.b1.el6_3.1 |
bind-dyndb-ldap-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:1.1.0-0.9.b1.el6_3.1 |
bind-dyndb-ldap Red Hat:enterprise_linux:6::workstation | All versions | 0:1.1.0-0.9.b1.el6_3.1 |
bind-dyndb-ldap-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 0:1.1.0-0.9.b1.el6_3.1 |
Products include Martin Nagy Bind-Dyndb-Ldap.
How do I fix CVE-2012-3429?
Apply the vendor's patch.
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-2012-3429 being exploited?
There is no known exploitation of CVE-2012-3429 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-m6m8-g76c-567c, RHSA-2012:1139.