CVE-2020-9366

CRITICAL

GNU Screen < 4.8.0 - Out-of-Bounds Write

Title source: rule

Description

A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.

References (4)

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2020/02/25/1

[Mailing List, Patch, Release Notes, Vendor Advisory] https://lists.gnu.org/archive/html/screen-devel/2020-02/msg00007.html

[Third Party Advisory] https://security.gentoo.org/glsa/202003-62

[Mailing List, Patch, Release Notes] https://www.openwall.com/lists/oss-security/2020/02/06/3

Scores

CVSS v3 9.8

EPSS 0.0073

EPSS Percentile 72.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-787

Status published

Affected Products (1)

gnu/screen < 4.8.0

Timeline

Published Feb 24, 2020

Tracked Since Feb 18, 2026