Detections
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GLSA-201706-21 : nettle: Information disclosure

high Nessus Plugin ID 101016

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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-201706-21 (nettle: Information disclosure)

 It was found that nettle’s RSA and DSA decryption code was vulnerable to cache-related side channel attacks.
 See the referenced technical paper “Cache Attacks Enable Bulk Key Recovery on the Cloud” below for details.
 Impact :

 An attacker could recover the private key from a co-located virtual-machine instance.
 Workaround :

 There is no known workaround at this time.

Solution

All nettle users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=dev-libs/nettle-3.2-r1'

See Also

https://eprint.iacr.org/2016/596.pdf

https://security.gentoo.org/glsa/201706-21

Plugin Details

Severity: High

ID: 101016

File Name: gentoo_GLSA-201706-21.nasl

Version: 3.3

Type: local

Published: 6/23/2017

Updated: 1/11/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

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

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

Patch Publication Date: 6/22/2017

Reference Information

CVE: CVE-2016-6489

GLSA: 201706-21