Vulnerability Name:

CVE-2012-2134 (CCN-75164)

Assigned:2012-04-24
Published:2012-04-24
Updated:2014-03-10
Summary: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.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
3.2 Low (Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
3.7 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.3 Medium (REDHAT CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
3.2 Low (REDHAT Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-399
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2012-2134

Source: CCN
Type: RHSA-2012-0683
Important: bind-dyndb-ldap security update

Source: REDHAT
Type: Patch
RHSA-2012:0683

Source: CCN
Type: SA48901
bind-dyndb-ldap DNS Query Processing Denial of Service Vulnerability

Source: SECUNIA
Type: Vendor Advisory
48901

Source: MLIST
Type: UNKNOWN
[oss-security] 20140424 Re: CVE Request -- bind-dyndb-ldap: Bind DoS (named hang) by processing DNS query for zone served by bind-dyndb-ldap

Source: OSVDB
Type: UNKNOWN
81619

Source: CCN
Type: OSVDB ID: 81619
bind-dyndb-ldap ldap_helper.c handle_connection_error() Function LDAP Connection Error Handling Remote DoS

Source: CCN
Type: BID-53236
Bind DynDB LDAP 'bind-dyndb-ldap' Package Remote Denial of Service Vulnerability

Source: CONFIRM
Type: UNKNOWN
https://bugzilla.redhat.com/show_bug.cgi?id=815846

Source: XF
Type: UNKNOWN
binddyndbldap-ldap-dos(75164)

Source: CCN
Type: Bind DynDB LDAP Web page
bind-dyndb-ldap

Source: CONFIRM
Type: UNKNOWN
https://git.fedorahosted.org/cgit/bind-dyndb-ldap.git/tree/NEWS

Source: CCN
Type: [Freeipa-users]
named-dyndb-ldap looses connection when the LDAP server is under high load

Source: MLIST
Type: UNKNOWN
[Freeipa-users] 20120424 named-dyndb-ldap looses connection when the LDAP server is under high load

Vulnerable Configuration:Configuration 1:
  • cpe:/a:martin_nagy:bind-dyndb-ldap:0.1.0:a1:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:0.1.0:b:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:0.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:1.0.0:b1:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:1.0.0:rc1:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:1.1.0:a1:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:1.1.0:a2:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:1.1.0:b1:*:*:*:*:*:*
  • OR cpe:/a:martin_nagy:bind-dyndb-ldap:*:b2:*:*:*:*:*:* (Version <= 1.1.0)

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:6:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:6::server:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:6::workstation:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:23843
    P
    		ELSA-2012:0683: bind-dyndb-ldap security update (Important)
    2014-05-26
    oval:org.mitre.oval:def:21137
    P
    		RHSA-2012:0683: bind-dyndb-ldap security update (Important)
    2014-02-24
    oval:com.redhat.rhsa:def:20120683
    P
    		RHSA-2012:0683: bind-dyndb-ldap security update (Important)
    2012-05-21
    BACK
    martin_nagy bind-dyndb-ldap 0.1.0 a1
    martin_nagy bind-dyndb-ldap 0.1.0 b
    martin_nagy bind-dyndb-ldap 0.2.0
    martin_nagy bind-dyndb-ldap 1.0.0 b1
    martin_nagy bind-dyndb-ldap 1.0.0 rc1
    martin_nagy bind-dyndb-ldap 1.1.0 a1
    martin_nagy bind-dyndb-ldap 1.1.0 a2
    martin_nagy bind-dyndb-ldap 1.1.0 b1
    martin_nagy bind-dyndb-ldap * b2