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GLSA-201309-20 : Dropbear: Multiple vulnerabilities

high Nessus Plugin ID 70160

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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-201309-20 (Dropbear: Multiple vulnerabilities)

 Multiple vulnerabilities have been discovered in Dropbear. Please review the CVE identifier and Gentoo bug referenced below for details.
 Impact :

 A remote attacker could send a specially crafted request to trigger a use-after-free condition, possibly resulting in arbitrary code execution or a Denial of Service condition. Additionally, the bundled version of libtommath has an error in its prime number generation, which could result in the generation of weak keys.
 Workaround :

 There is no known workaround at this time.

Solution

All Dropbear users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/dropbear-2012.55'

See Also

https://bugs.gentoo.org/show_bug.cgi?id=328383

https://security.gentoo.org/glsa/201309-20

Plugin Details

Severity: High

ID: 70160

File Name: gentoo_GLSA-201309-20.nasl

Version: 1.8

Type: local

Published: 9/27/2013

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:dropbear, 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: 9/26/2013

Reference Information

CVE: CVE-2012-0920

BID: 52159

GLSA: 201309-20