Detections
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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : GoBGP vulnerabilities (USN-8348-1)

medium Nessus Plugin ID 318621

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8348-1 advisory.

 It was discovered that GoBGP incorrectly handled certain specially crafted BGP UPDATE messages. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service.
 (CVE-2026-37461)

 Yanlei Wang discovered that GoBGP incorrectly handled certain malformed BGP UPDATE messages containing 4-byte AS attributes. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-41643)

 It was discovered that GoBGP incorrectly handled certain malformed BGP UPDATE messages containing SRv6 L3 Service attributes. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-7734)

 It was discovered that GoBGP incorrectly handled certain malformed BGP UPDATE messages containing Accumulated IGP (AIGP) attributes. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-7735)

 It was discovered that GoBGP incorrectly handled certain malformed Multi- threaded Routing Toolkit (MRT) routing information entries. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-7736)

 It was discovered that GoBGP incorrectly handled certain malformed Multi- threaded Routing Toolkit (MRT) headers. A remote attacker could possibly use this issue to cause GoBGP to crash, resulting in a denial of service. (CVE-2026-7737)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected gobgpd and / or golang-github-osrg-gobgp-dev packages.

See Also

https://ubuntu.com/security/notices/USN-8348-1

Plugin Details

Severity: Medium

ID: 318621

File Name: ubuntu_USN-8348-1.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 6/4/2026

Updated: 6/4/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-7736

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-7737

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.5

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-7737

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:golang-github-osrg-gobgp-dev, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gobgpd, cpe:/o:canonical:ubuntu_linux:26.04:-:lts

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/3/2026

Vulnerability Publication Date: 4/29/2026

Reference Information

CVE: CVE-2026-37461, CVE-2026-41643, CVE-2026-7734, CVE-2026-7735, CVE-2026-7736, CVE-2026-7737

USN: 8348-1