CVE-2024-32487

Publication date 13 April 2024

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

less through 653 allows OS command execution via a newline character in the name of a file, because quoting is mishandled in filename.c. Exploitation typically requires use with attacker-controlled file names, such as the files extracted from an untrusted archive. Exploitation also requires the LESSOPEN environment variable, but this is set by default in many common cases.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
less	24.04 LTS noble	Fixed 590-2ubuntu2.1
	23.10 mantic	Fixed 590-2ubuntu0.23.10.2
	22.04 LTS jammy	Fixed 590-1ubuntu0.22.04.3
	20.04 LTS focal	Fixed 551-1ubuntu0.3
	18.04 LTS bionic	Fixed 487-0.1ubuntu0.1~esm2
	16.04 LTS xenial	Fixed 481-2.1ubuntu0.2+esm2
	14.04 LTS trusty	Fixed 458-2ubuntu0.1~esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
less	Upstream: 007521a

Severity score breakdown

Parameter	Value
Base score	8.6 · High
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-6756-1
less vulnerability
29 April 2024