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GLSA-202003-62 : GNU Screen: Buffer overflow

critical Nessus Plugin ID 135017

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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-202003-62 (GNU Screen: Buffer overflow)

 A buffer overflow was found in the way GNU Screen treated the special escape OSC 49.
 Impact :

 A remote attacker, by writing a specially crafted string of characters to a GNU Screen window, could possibly corrupt memory or have other unspecified impact.
 Workaround :

 There is no known workaround at this time.

Solution

All GNU Screen users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=app-misc/screen-4.8.0'

See Also

https://security.gentoo.org/glsa/202003-62

Plugin Details

Severity: Critical

ID: 135017

File Name: gentoo_GLSA-202003-62.nasl

Version: 1.3

Type: local

Published: 3/31/2020

Updated: 3/20/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2020-9366

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:screen, 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: 3/30/2020

Vulnerability Publication Date: 2/24/2020

Reference Information

CVE: CVE-2020-9366

GLSA: 202003-62