Detections
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GLSA-201903-05 : Tar: Denial of service

medium Nessus Plugin ID 122733

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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-201903-05 (Tar: Denial of service)

 The sparse_dump_region function in sparse.c file in Tar allows an infinite loop using the --sparse option.
 Impact :

 A local attacker could cause a Denial of Service condition by modifying a file that is supposed to be archived by a different user’s process (e.g., a system backup running as root).
 Workaround :

 There is no known workaround at this time.

Solution

All Tar users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=app-arch/tar-1.30-r1'

See Also

https://security.gentoo.org/glsa/201903-05

Plugin Details

Severity: Medium

ID: 122733

File Name: gentoo_GLSA-201903-05.nasl

Version: 1.3

Type: local

Published: 3/11/2019

Updated: 5/27/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

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

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:tar, 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: 3/10/2019

Vulnerability Publication Date: 12/26/2018

Reference Information

CVE: CVE-2018-20482

GLSA: 201903-05