CVE-2022-46663 : In GNU Less before 609, crafted data can result in "less -R" not filtering ANSI

In GNU Less before 609, crafted data can result in "less -R" not filtering ANSI escape sequences sent to the terminal.

Published 2023-02-07 21:15:09

Updated 2025-03-25 15:15:17

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2022-46663

GNU » Less
Versions from including (>=) 566 and before (<) 609
cpe:2.3:a:gnu:less:*:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 37
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.07%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 20 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-03-25
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

http://www.openwall.com/lists/oss-security/2023/02/07/7

oss-security - CVE-2022-46663: less -R filtering bypass
Mailing List;Third Party Advisory
https://security.gentoo.org/glsa/202310-11

less: Denial of service (GLSA 202310-11) — Gentoo security
Third Party Advisory
http://www.greenwoodsoftware.com/less/news.609.html

Greenwood Software
Broken Link
https://github.com/gwsw/less/commit/a78e1351113cef564d790a730d657a321624d79c

End OSC8 hyperlink on invalid embedded escape sequence. · gwsw/less@a78e135 · GitHub
Patch
https://www.openwall.com/lists/oss-security/2023/02/07/7

oss-security - CVE-2022-46663: less -R filtering bypass
Mailing List;Patch;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LR7AUWB34JD4PCW3HHASBEDGGHFWPAQP/

[SECURITY] Fedora 37 Update: less-633-1.fc37 - package-announce - Fedora Mailing-Lists
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LR7AUWB34JD4PCW3HHASBEDGGHFWPAQP/

[SECURITY] Fedora 37 Update: less-633-1.fc37 - package-announce - Fedora mailing-lists

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