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CVE-2012-2134

17
FAUCET Score

CVE-2012-2134 describes a denial-of-service vulnerability in bind-dyndb-ldap versions prior to 1.1.0rc1. Specifically, the handle_connection_error function fails to properly manage LDAP query errors when a non-alphabetic character is present in the base DN of an LDAP search DNS query, leading to an infinite loop and named server hang. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and potential for partial availability impact, and can be exploited remotely without authentication. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.1.0CPE matchmatch criteria
cpe:2.3:a:martin_nagy:bind-dyndb-ldap:*:b2:*:*:*:*:*:*
0.1.0CPE matchmatch criteria
cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:a1:*:*:*:*:*:*
0.1.0CPE matchmatch criteria
cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:b:*:*:*:*:*:*
0.2.0CPE matchmatch criteria
cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.2.0:*:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.0.0:b1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.33%
Probability of exploitation in next 30 days
EPSS Percentile
81.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0232 is in the 71st percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: bind-dyndb-ldap-0:0.2.0-7.el6_2.1
View patch

Vendor Advisories (1)

redhatCVE-2012-2134Important

bind-dyndb-ldap: Bind DoS (named hang) by processing DNS query for zone served by bind-dyndb-ldap

Apr 24, 2012

References

rhn.redhat.com / errata/RHSA-2012-0683.html
Patch
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/48901
Vendor Advisory
git.fedorahosted.org / cgit/bind-dyndb-ldap.git/tree/NEWS
redhat.com / archives/freeipa-users/2012-April/msg00144.html
openwall.com / lists/oss-security/2012/04/24/15
osvdb.org / 81619