Quagga up to 0.99.16 null pointer dereference

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CTI Interest Score
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A vulnerability, which was classified as problematic, was found in Quagga (Network Routing Software). This affects an unknown part. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

bgpd in Quagga before 0.99.17 does not properly parse AS paths, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an unknown AS type in an AS path attribute in a BGP UPDATE message.

The weakness was disclosed 09/10/2010 as Bug 626795 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2010-2949 since 08/04/2010. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 49121 (Debian DSA-2104-1 : quagga - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155499 (Oracle Enterprise Linux Update for Quagga (ELSA-2010-0945)).

Upgrading to version 0.98.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (49121). The entry 54686 is pretty similar.






CPE 2.3info

CPE 2.2info


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

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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Nessus ID: 49121
Nessus Name: Debian DSA-2104-1 : quagga - several vulnerabilities
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OpenVAS ID: 862401
OpenVAS Name: Fedora Update for quagga FEDORA-2010-14002
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Quagga 0.98.5
Patch: cddb8112b80fa9867156c637d63e6e79eeac67bb


08/04/2010 🔍
08/24/2010 +20 days 🔍
08/24/2010 +0 days 🔍
09/10/2010 +17 days 🔍
09/10/2010 +0 days 🔍
09/10/2010 +0 days 🔍
09/14/2010 +4 days 🔍
03/19/2015 +1647 days 🔍
09/24/2021 +2381 days 🔍


Advisory: Bug 626795
Status: Not defined
Confirmation: 🔍

CVE: CVE-2010-2949 (🔍)

Vulnerability Center: 27119 - Quagga < 0.99.17 bgpd Remote DoS via Unknown AS Type in a BGP UPDATE Message, Medium
SecurityFocus: 42642 - Quagga bgpd Null Pointer Deference Denial Of Service Vulnerability
Secunia: 41038 - Quagga BGP Daemon Denial of Service and Buffer Overflow Vulnerabilities, Moderately Critical
Vupen: ADV-2010-2304

See also: 🔍


Created: 03/19/2015 02:37 PM
Updated: 09/24/2021 07:15 PM
Changes: 03/19/2015 02:37 PM (63), 03/04/2017 06:03 PM (14), 09/24/2021 07:08 PM (4), 09/24/2021 07:15 PM (1)
Complete: 🔍


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