OpenLDAP up to 2.4.42 libraries/liblber/io.c ber_get_next BER input validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.3 | $0-$5k | 0.00 |
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 are known, but there is no available exploit.
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 vulnerability database at Tenable (86355). See 79581 for similar entry.
Product
Type
Name
Version
- 2.4.0
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.4.5
- 2.4.6
- 2.4.7
- 2.4.8
- 2.4.9
- 2.4.10
- 2.4.11
- 2.4.12
- 2.4.13
- 2.4.14
- 2.4.15
- 2.4.16
- 2.4.17
- 2.4.18
- 2.4.19
- 2.4.20
- 2.4.21
- 2.4.22
- 2.4.23
- 2.4.24
- 2.4.25
- 2.4.26
- 2.4.27
- 2.4.28
- 2.4.29
- 2.4.30
- 2.4.31
- 2.4.32
- 2.4.33
- 2.4.34
- 2.4.35
- 2.4.36
- 2.4.37
- 2.4.38
- 2.4.39
- 2.4.40
- 2.4.41
- 2.4.42
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 5.3
VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Input validationCWE: CWE-20
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
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: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Patch: 6fe51a9ab04fd28bbc171da3cf12f1c1040d6629
TippingPoint: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍
Fortigate IPS: 🔍
Timeline
09/10/2015 🔍09/11/2015 🔍
09/11/2015 🔍
09/11/2015 🔍
09/11/2015 🔍
09/13/2015 🔍
09/14/2015 🔍
06/14/2022 🔍
Sources
Advisory: RHSA-2015:1840Researcher: Denis Andzakovic
Status: Not defined
Confirmation: 🔍
CVE: CVE-2015-6908 (🔍)
OVAL: 🔍
SecurityTracker: 1033534
Vulnerability Center: 52570 - OpenLDAP 2.4.42 and Earlier Remote DoS via Crafted BER Data, High
SecurityFocus: 76714 - OpenLDAP CVE-2015-6908 Denial of Service Vulnerability
See also: 🔍
Entry
Created: 09/14/2015 10:20Updated: 06/14/2022 23:17
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)
Complete: 🔍
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