CVE-2023-40303

Publication date 14 August 2023

Last updated 29 September 2025

Ubuntu priority

Cvss 3 Severity Score

Description

GNU inetutils before 2.5 may allow privilege escalation because of unchecked return values of set*id() family functions in ftpd, rcp, rlogin, rsh, rshd, and uucpd. This is, for example, relevant if the setuid system call fails when a process is trying to drop privileges before letting an ordinary user control the activities of the process.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
inetutils	25.04 plucky	Fixed 2:2.4-3ubuntu1
	24.10 oracular	Fixed 2:2.4-3ubuntu1
	24.04 LTS noble	Fixed 2:2.4-3ubuntu1
	23.10 mantic	Fixed 2:2.4-2ubuntu2
	23.04 lunar	Fixed 2:2.4-2ubuntu1.1
	22.04 LTS jammy	Fixed 2:2.2-2ubuntu0.1
	20.04 LTS focal	Fixed 2:1.9.4-11ubuntu0.2
	18.04 LTS bionic	Fixed 2:1.9.4-3ubuntu0.1+esm2
	16.04 LTS xenial	Fixed 2:1.9.4-1ubuntu0.1~esm3
	14.04 LTS trusty	Fixed 2:1.9.2-1ubuntu0.1~esm2

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Patch details

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

Package	Patch details
inetutils	Upstream: ?id=e4e

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H