Detections
Analytics
Ubuntu 18.04 LTS : libssh vulnerability (USN-4327-1)
medium Nessus Plugin ID 135399
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Synopsis
The remote Ubuntu host is missing a security update.Description
The remote Ubuntu 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4327-1 advisory.Yasheng Yang discovered that libssh incorrectly handled AES-CTR ciphers. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service.
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: 135399
File Name: ubuntu_USN-4327-1.nasl
Version: 1.9
Type: local
Agent: unix
Family: Ubuntu Local Security Checks
Published: 4/10/2020
Updated: 8/27/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2020-1730
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:canonical:ubuntu_linux:18.04:-: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/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 4/9/2020
Vulnerability Publication Date: 4/13/2020
Reference Information
CVE: CVE-2020-1730
IAVA: 2020-A-0203
USN: 4327-1