What’s Vulnerable › Vulnerabilities

CVE-2022-46663

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-07 · updated 2026-06-17

Description

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

Affected products

• Fedoraproject Fedora: 37
• GNU Less: from 566 before 609 — fixed in 609

How to fix

Upgrade to a fixed version: GNU Less 609. Check the vendor advisory for mitigations.

References

• http://www.greenwoodsoftware.com/less/news.609.html
• http://www.openwall.com/lists/oss-security/2023/02/07/7
• https://github.com/gwsw/less/commit/a78e1351113cef564d790a730d657a321624d79c
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LR7AUWB34JD4PCW3HHASBEDGGHFWPAQP/
• https://security.gentoo.org/glsa/202310-11
• https://www.openwall.com/lists/oss-security/2023/02/07/7
• http://www.greenwoodsoftware.com/less/news.609.html
• http://www.openwall.com/lists/oss-security/2023/02/07/7
• https://github.com/gwsw/less/commit/a78e1351113cef564d790a730d657a321624d79c
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LR7AUWB34JD4PCW3HHASBEDGGHFWPAQP/
• https://security.gentoo.org/glsa/202310-11
• https://www.openwall.com/lists/oss-security/2023/02/07/7

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