CVE-2023-43787

A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libx11	24.10 oracular	Fixed 2:1.8.6-1ubuntu1
	24.04 LTS noble	Fixed 2:1.8.6-1ubuntu1
	23.10 mantic	Fixed 2:1.8.6-1ubuntu1
	23.04 lunar	Fixed 2:1.8.4-2ubuntu0.3
	22.04 LTS jammy	Fixed 2:1.7.5-1ubuntu0.3
	20.04 LTS focal	Fixed 2:1.6.9-2ubuntu1.6
	18.04 LTS bionic	Fixed 2:1.6.4-3ubuntu0.4+esm2 Ubuntu Pro
	16.04 LTS xenial	Fixed 2:1.6.3-1ubuntu2.2+esm4 Ubuntu Pro
	14.04 LTS trusty	Fixed 2:1.6.2-1ubuntu2.1+esm5 Ubuntu Pro
libxpm	24.10 oracular	Fixed 1:3.5.12-1.1ubuntu1
	24.04 LTS noble	Fixed 1:3.5.12-1.1ubuntu1
	23.10 mantic	Fixed 1:3.5.12-1.1ubuntu1
	23.04 lunar	Fixed 1:3.5.12-1.1ubuntu0.1
	22.04 LTS jammy	Fixed 1:3.5.12-1ubuntu0.22.04.2
	20.04 LTS focal	Fixed 1:3.5.12-1ubuntu0.20.04.2
	18.04 LTS bionic	Fixed 1:3.5.12-1ubuntu0.18.04.2+esm1 Ubuntu Pro
	16.04 LTS xenial	Fixed 1:3.5.11-1ubuntu0.16.04.1+esm2 Ubuntu Pro
	14.04 LTS trusty	Fixed 1:3.5.10-1ubuntu0.1+esm2 Ubuntu Pro
motif	24.10 oracular	Needs evaluation
	24.04 LTS noble	Needs evaluation
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.04 LTS jammy	Needs evaluation
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Ignored end of ESM support, was needs-triage

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Notes

mdeslaur

issue is in libx11, but libxpm was also fixed to avoid passing invalid data

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

References

Related Ubuntu Security Notices (USN)

USN-6407-1
libx11 vulnerabilities
3 October 2023

USN-6408-1
libXpm vulnerabilities
3 October 2023

USN-6407-2
libx11 vulnerabilities
10 October 2023

USN-6408-2
libXpm vulnerabilities
23 October 2023

Other references

https://www.cve.org/CVERecord?id=CVE-2023-43787