OpenLDAP up to 2.4.42 libraries/liblber/io.c ber_get_next BER input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenLDAP up to 2.4.42. It has been declared as problematic. The impacted element is the function ber_get_next in the library libraries/liblber/io.c. Such manipulation of the argument BER leads to input validation. This vulnerability is listed as CVE-2015-6908. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in OpenLDAP up to 2.4.42 (Directory Service Software). It has been rated as problematic. Affected by this issue is the function ber_get_next in the library libraries/liblber/io.c. The manipulation of the argument BER with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

The ber_get_next function in libraries/liblber/io.c in OpenLDAP 2.4.42 and earlier allows remote attackers to cause a denial of service (reachable assertion and application crash) via crafted BER data, as demonstrated by an attack against slapd.

The weakness was presented 09/11/2015 by Denis Andzakovic (Website). The advisory is available at openldap.org. This vulnerability is handled as CVE-2015-6908 since 09/11/2015. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 86355 (Amazon Linux AMI : openldap / compat-openldap (ALAS-2015-599)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168454 (OpenSuSE Security Update for openldap2 (openSUSE-SU-2016:0226-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 21155.

The vulnerability is also documented in the databases at Exploit-DB (38145), Tenable (86355), SecurityFocus (BID 76714†) and Vulnerability Center (SBV-52570†). See VDB-79581 for similar entry. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 86355
Nessus Name: Amazon Linux AMI : openldap / compat-openldap (ALAS-2015-599)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703356
OpenVAS Name: Debian Security Advisory DSA 3356-1 (openldap - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 6fe51a9ab04fd28bbc171da3cf12f1c1040d6629
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

09/10/2015 🔍
09/11/2015 +1 days 🔍
09/11/2015 +0 days 🔍
09/11/2015 +0 days 🔍
09/11/2015 +0 days 🔍
09/13/2015 +2 days 🔍
09/14/2015 +1 days 🔍
11/13/2024 +3348 days 🔍

Sourcesinfo

Advisory: RHSA-2015:1840
Researcher: Denis Andzakovic
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-6908 (🔍)
GCVE (CVE): GCVE-0-2015-6908
GCVE (VulDB): GCVE-100-77678

OVAL: 🔍

SecurityFocus: 76714 - OpenLDAP CVE-2015-6908 Denial of Service Vulnerability
SecurityTracker: 1033534
Vulnerability Center: 52570 - OpenLDAP 2.4.42 and Earlier Remote DoS via Crafted BER Data, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 09/14/2015 10:20
Updated: 11/13/2024 14:17
Changes: 09/14/2015 10:20 (61), 12/19/2017 08:17 (17), 06/14/2022 22:51 (6), 06/14/2022 23:05 (1), 06/14/2022 23:17 (2), 11/13/2024 14:17 (27)
Complete: 🔍
Cache ID: 216:252:103

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