Multiple vulnerabilities in OpenLDAP
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2011-1081 CVE-2011-1024 CVE-2011-1025 |
| CWE-ID | CWE-399 CWE-264 CWE-287 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
OpenLDAP Server applications / Directory software, identity management |
| Vendor | OpenLDAP.org |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Resource management error
EUVDB-ID: #VU45182
Risk: Medium
CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2011-1081
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: Yes
DescriptionThe vulnerability allows a remote non-authenticated attacker to perform service disruption.
modrdn.c in slapd in OpenLDAP 2.4.x before 2.4.24 allows remote attackers to cause a denial of service (daemon crash) via a relative Distinguished Name (DN) modification request (aka MODRDN operation) that contains an empty value for the OldDN field.
MitigationInstall update from vendor's website.
Vulnerable software versionsOpenLDAP: 2.4.6 - 2.4.23
External linkshttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://openwall.com/lists/oss-security/2011/02/28/1
http://openwall.com/lists/oss-security/2011/02/28/2
http://openwall.com/lists/oss-security/2011/03/01/11
http://openwall.com/lists/oss-security/2011/03/01/15
http://secunia.com/advisories/43331
http://secunia.com/advisories/43718
http://security.gentoo.org/glsa/glsa-201406-36.xml
http://securitytracker.com/id?1025191
http://www.mandriva.com/security/advisories?name=MDVSA-2011:055
http://www.mandriva.com/security/advisories?name=MDVSA-2011:056
http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/modrdn.c.diff?r1=1.170.2.8&r2=1.170.2.9
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6768
http://www.openldap.org/lists/openldap-announce/201102/msg00000.html
http://www.redhat.com/support/errata/RHSA-2011-0347.html
http://www.ubuntu.com/usn/USN-1100-1
http://www.vupen.com/english/advisories/2011/0665
http://bugzilla.novell.com/show_bug.cgi?id=674985
http://bugzilla.redhat.com/show_bug.cgi?id=680975
http://exchange.xforce.ibmcloud.com/vulnerabilities/66239
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU45194
Risk: Low
CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2011-1024
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote #AU# to read and manipulate data.
chain.c in back-ldap in OpenLDAP 2.4.x before 2.4.24, when a master-slave configuration with a chain overlay and ppolicy_forward_updates (aka authentication-failure forwarding) is used, allows remote authenticated users to bypass external-program authentication by sending an invalid password to a slave server.
MitigationInstall update from vendor's website.
Vulnerable software versionsOpenLDAP: 2.4.6 - 2.4.23
External linkshttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10735
http://openwall.com/lists/oss-security/2011/02/24/12
http://openwall.com/lists/oss-security/2011/02/25/13
http://secunia.com/advisories/43331
http://secunia.com/advisories/43708
http://secunia.com/advisories/43718
http://security.gentoo.org/glsa/glsa-201406-36.xml
http://securitytracker.com/id?1025188
http://www.mandriva.com/security/advisories?name=MDVSA-2011:055
http://www.mandriva.com/security/advisories?name=MDVSA-2011:056
http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ldap/chain.c.diff?r1=1.76&r2=1.77&hideattic=1&sortbydate=0
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6607
http://www.openldap.org/lists/openldap-announce/201102/msg00000.html
http://www.openldap.org/lists/openldap-technical/201004/msg00247.html
http://www.redhat.com/support/errata/RHSA-2011-0346.html
http://www.redhat.com/support/errata/RHSA-2011-0347.html
http://www.ubuntu.com/usn/USN-1100-1
http://www.vupen.com/english/advisories/2011/0665
http://bugzilla.novell.com/show_bug.cgi?id=674985
http://bugzilla.redhat.com/show_bug.cgi?id=680466
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Improper Authentication
EUVDB-ID: #VU45195
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2011-1025
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to read and manipulate data.
bind.cpp in back-ndb in OpenLDAP 2.4.x before 2.4.24 does not require authentication for the root Distinguished Name (DN), which allows remote attackers to bypass intended access restrictions via an arbitrary password.
MitigationInstall update from vendor's website.
Vulnerable software versionsOpenLDAP: 2.4.6 - 2.4.23
External linkshttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://openwall.com/lists/oss-security/2011/02/24/12
http://openwall.com/lists/oss-security/2011/02/25/13
http://secunia.com/advisories/43331
http://secunia.com/advisories/43718
http://security.gentoo.org/glsa/glsa-201406-36.xml
http://securitytracker.com/id?1025190
http://www.mandriva.com/security/advisories?name=MDVSA-2011:056
http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ndb/bind.cpp.diff?r1=1.5&r2=1.8
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6661
http://www.openldap.org/lists/openldap-announce/201102/msg00000.html
http://www.redhat.com/support/errata/RHSA-2011-0347.html
http://www.ubuntu.com/usn/USN-1100-1
http://www.vupen.com/english/advisories/2011/0665
http://bugzilla.redhat.com/show_bug.cgi?id=680472
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
