CVE-2012-3429

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-08-07 · updated 2026-06-16
Weakness: CWE-20

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.

Affected products

Martin Nagy Bind-Dyndb-Ldap: through 1.1.0; 0.1.0-a1, 0.1.0-b, 0.2.0, 1.0.0-b1, 1.0.0-rc1, 1.1.0-a1 (+3)

References

http://git.fedorahosted.org/cgit/bind-dyndb-ldap.git/commit/?id=f345805c73c294db42452ae966c48fbc36c48006
http://rhn.redhat.com/errata/RHSA-2012-1139.html
http://secunia.com/advisories/50086
http://secunia.com/advisories/50159
http://www.openwall.com/lists/oss-security/2012/08/02/5
http://www.securityfocus.com/bid/54787
http://www.securitytracker.com/id?1027341
https://bugzilla.redhat.com/show_bug.cgi?id=842466
https://exchange.xforce.ibmcloud.com/vulnerabilities/77391
http://git.fedorahosted.org/cgit/bind-dyndb-ldap.git/commit/?id=f345805c73c294db42452ae966c48fbc36c48006
http://rhn.redhat.com/errata/RHSA-2012-1139.html
http://secunia.com/advisories/50086

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