GoBGP up to 3.34.x pkg/packet/bgp/bgp.go softwareVersionLen off-by-one

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in GoBGP up to 3.34.x. Impacted is the function softwareVersionLen of the file pkg/packet/bgp/bgp.go. This manipulation causes off-by-one. This vulnerability is handled as CVE-2025-43971. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in GoBGP up to 3.34.x and classified as critical. Affected by this vulnerability is the function softwareVersionLen of the file pkg/packet/bgp/bgp.go. The manipulation with an unknown input leads to a off-by-one vulnerability. The CWE definition for the vulnerability is CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. As an impact it is known to affect availability. The summary by CVE is:

An issue was discovered in GoBGP before 3.35.0. pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-43971 since 04/21/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 242574 (Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : GoBGP vulnerabilities (USN-7661-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.35.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (242574) and EUVD (EUVD-2025-12349). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.6
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Off-by-one
CWE: CWE-193 / CWE-189
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: 242574
Nessus Name: Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : GoBGP vulnerabilities (USN-7661-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: GoBGP 3.35.0

Timelineinfo

04/21/2025 Advisory disclosed
04/21/2025 +0 days CVE reserved
04/21/2025 +0 days VulDB entry created
07/23/2025 +93 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2025-43971 (🔒)
GCVE (CVE): GCVE-0-2025-43971
GCVE (VulDB): GCVE-100-305761
EUVD: 🔒

Entryinfo

Created: 04/21/2025 03:07
Updated: 07/23/2025 17:20
Changes: 04/21/2025 03:07 (63), 05/25/2025 16:13 (1), 07/23/2025 17:20 (2)
Complete: 🔍
Cache ID: 216:3B2:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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