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Ubuntu 17.04 : libgcrypt20 vulnerability (USN-3417-1)

high Nessus Plugin ID 103250

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Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

Daniel Genkin, Luke Valenta, and Yuval Yarom discovered that Libgcrypt was susceptible to an attack via side channels. A local attacker could use this attack to recover Curve25519 private keys.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected libgcrypt20 package.

See Also

https://usn.ubuntu.com/3417-1/

Plugin Details

Severity: High

ID: 103250

File Name: ubuntu_USN-3417-1.nasl

Version: 3.6

Type: local

Agent: unix

Published: 9/15/2017

Updated: 1/12/2023

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: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:17.04, p-cpe:/a:canonical:ubuntu_linux:libgcrypt20

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/14/2017

Vulnerability Publication Date: 8/29/2017

Reference Information

CVE: CVE-2017-0379

USN: 3417-1