VDB-238787 · CVE-2023-41909 · DLA 3573-1

FRRouting FRR up to 9.0 bgpd/bgp_flowspec.c bgp_nlri_parse_flowspec null pointer dereference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in FRRouting FRR up to 9.0 and classified as problematic. Affected is the function bgp_nlri_parse_flowspec of the file bgpd/bgp_flowspec.c. The manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2023-41909. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in FRRouting FRR up to 9.0. It has been rated as problematic. This issue affects the function bgp_nlri_parse_flowspec of the file bgpd/bgp_flowspec.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.

The weakness was disclosed 09/05/2023. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-41909 since 09/05/2023. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 212585 (SUSE SLES15 / openSUSE 15 Security Update : frr (SUSE-SU-2024:4090-1)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (212585). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

FRRouting

Name

Version

Website

Product: https://github.com/FRRouting/frr/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 212585
Nessus Name: SUSE SLES15 / openSUSE 15 Security Update : frr (SUSE-SU-2024:4090-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

09/05/2023 🔍
09/05/2023 +0 days 🔍
09/05/2023 +0 days 🔍
12/12/2024 +464 days 🔍

Sourcesinfo

Product: github.com

Advisory: DLA 3573-1
Status: Confirmed

CVE: CVE-2023-41909 (🔍)
GCVE (CVE): GCVE-0-2023-41909
GCVE (VulDB): GCVE-100-238787

Entryinfo

Created: 09/05/2023 10:02
Updated: 12/12/2024 08:49
Changes: 09/05/2023 10:02 (41), 10/01/2023 07:15 (1), 10/01/2023 07:21 (11), 12/12/2024 08:49 (17)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.