Wouter Verhelst nbd 2.9.21 nbd-server.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Wouter Verhelst nbd 2.9.21. This issue affects some unknown processing of the file nbd-server.c. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2011-1925. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic was found in Wouter Verhelst nbd 2.9.21. This vulnerability affects some unknown functionality of the file nbd-server.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by causing a negotiation failure, as demonstrated by specifying a name for a non-existent export.

The weakness was released 05/31/2011 as confirmed git commit (GIT Repository). The advisory is shared for download at nbd.git.sourceforge.net. This vulnerability was named CVE-2011-1925 since 05/09/2011. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 59708 (GLSA-201206-35 : nbd: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at nbd.git.sourceforge.net. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (67502), Tenable (59708) and SecurityFocus (BID 47884†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 59708
Nessus Name: GLSA-201206-35 : nbd: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 71561
OpenVAS Name: Gentoo Security Advisory GLSA 201206-35 (nbd)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: ebbbe0b3ce5393fa42a259f5e03d549508586aaa

Timelineinfo

05/09/2011 🔍
05/17/2011 +8 days 🔍
05/31/2011 +14 days 🔍
05/31/2011 +0 days 🔍
06/25/2012 +391 days 🔍
06/26/2012 +1 days 🔍
03/23/2015 +1000 days 🔍
11/08/2021 +2422 days 🔍

Sourcesinfo

Advisory: nbd.git.sourceforge.net
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-1925 (🔍)
GCVE (CVE): GCVE-0-2011-1925
GCVE (VulDB): GCVE-100-57556
X-Force: 67502
SecurityFocus: 47884 - Network Block Device Server NULL Pointer Dereference Denial of Service Vulnerability

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/08/2021 01:52
Changes: 03/23/2015 16:50 (67), 02/09/2019 11:09 (2), 11/08/2021 01:52 (3)
Complete: 🔍
Cache ID: 216:418:103

Once again VulDB remains the best source for vulnerability data.

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