Vulnerability Details : CVE-2012-2134
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.
Vulnerability category: Denial of service
Products affected by CVE-2012-2134
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:*:b2:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:b:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:a1:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:a2:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.0.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:a1:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.0.0:b1:*:*:*:*:*:*
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:b1:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2012-2134
1.51%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2012-2134
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST |
CWE ids for CVE-2012-2134
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-2134
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http://www.openwall.com/lists/oss-security/2012/04/24/15
oss-security - Re: CVE Request -- bind-dyndb-ldap: Bind DoS (named hang) by processing DNS query for zone served by bind-dyndb-ldap
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http://secunia.com/advisories/48901
Sign inVendor Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=815846
815846 – (CVE-2012-2134) CVE-2012-2134 bind-dyndb-ldap: Bind DoS (named hang) by processing DNS query for zone served by bind-dyndb-ldap
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http://rhn.redhat.com/errata/RHSA-2012-0683.html
RHSA-2012:0683 - Security Advisory - Red Hat Customer PortalPatch
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https://git.fedorahosted.org/cgit/bind-dyndb-ldap.git/tree/NEWS
Infrastructure/Fedorahosted-retirement - Fedora Project Wiki
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http://www.osvdb.org/81619
404 Not Found
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https://www.redhat.com/archives/freeipa-users/2012-April/msg00144.html
[Freeipa-users] named-dyndb-ldap looses connection when the LDAP server
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