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GLSA-202003-32 : Libgcrypt: Side-channel attack

medium Nessus Plugin ID 134609

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Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-202003-32 (Libgcrypt: Side-channel attack)

 A timing attack was found in the way ECCDSA was implemented in Libgcrypt.
 Impact :

 A local man-in-the-middle attacker, during signature generation, could possibly recover the private key.
 Workaround :

 There is no known workaround at this time.

Solution

All Libgcrypt users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=dev-libs/libgcrypt-1.8.5'

See Also

https://security.gentoo.org/glsa/202003-32

Plugin Details

Severity: Medium

ID: 134609

File Name: gentoo_GLSA-202003-32.nasl

Version: 1.3

Type: local

Published: 3/16/2020

Updated: 10/16/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

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

CVSS Score Source: CVE-2019-13627

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:libgcrypt, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 3/15/2020

Vulnerability Publication Date: 9/25/2019

Reference Information

CVE: CVE-2019-13627

GLSA: 202003-32