Detections
Analytics
Ubuntu 20.04 LTS : libssh vulnerability (USN-5053-1)
medium Nessus Plugin ID 152869
Language:
Synopsis
The remote Ubuntu host is missing a security update.Description
The remote Ubuntu 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5053-1 advisory.It was discovered that libssh incorrectly handled rekeying. A remote attacker could use this issue to cause libssh to crash, resulting in a denial of service, or possibly execute arbitrary code.
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: Medium
ID: 152869
File Name: ubuntu_USN-5053-1.nasl
Version: 1.9
Type: local
Agent: unix
Family: Ubuntu Local Security Checks
Published: 8/26/2021
Updated: 8/27/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4
Temporal Score: 3
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS Score Source: CVE-2021-3634
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libssh-gcrypt-dev, p-cpe:/a:canonical:ubuntu_linux:libssh-gcrypt-4, p-cpe:/a:canonical:ubuntu_linux:libssh-4, p-cpe:/a:canonical:ubuntu_linux:libssh-dev
Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release
Exploit Ease: No known exploits are available
Patch Publication Date: 8/26/2021
Vulnerability Publication Date: 8/26/2021
Reference Information
CVE: CVE-2021-3634
IAVA: 2022-A-0041-S
USN: 5053-1