Amazon Linux AMI update for xorg-x11-server



Published: 2024-04-17
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-31083
CWE-ID CWE-416
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		Amazon Linux AMI
Operating systems & Components / Operating system

xorg-x11-server
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU88118

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-31083

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the ProcRenderAddGlyphs() function. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

i686:
    xorg-x11-server-devel-1.17.4-18.55.amzn1.i686
    xorg-x11-server-Xephyr-1.17.4-18.55.amzn1.i686
    xorg-x11-server-Xdmx-1.17.4-18.55.amzn1.i686
    xorg-x11-server-Xnest-1.17.4-18.55.amzn1.i686
    xorg-x11-server-debuginfo-1.17.4-18.55.amzn1.i686
    xorg-x11-server-Xvfb-1.17.4-18.55.amzn1.i686
    xorg-x11-server-common-1.17.4-18.55.amzn1.i686
    xorg-x11-server-Xorg-1.17.4-18.55.amzn1.i686

noarch:
    xorg-x11-server-source-1.17.4-18.55.amzn1.noarch

src:
    xorg-x11-server-1.17.4-18.55.amzn1.src

x86_64:
    xorg-x11-server-devel-1.17.4-18.55.amzn1.x86_64
    xorg-x11-server-Xvfb-1.17.4-18.55.amzn1.x86_64
    xorg-x11-server-Xdmx-1.17.4-18.55.amzn1.x86_64
    xorg-x11-server-Xorg-1.17.4-18.55.amzn1.x86_64
    xorg-x11-server-Xnest-1.17.4-18.55.amzn1.x86_64
    xorg-x11-server-debuginfo-1.17.4-18.55.amzn1.x86_64
    xorg-x11-server-Xephyr-1.17.4-18.55.amzn1.x86_64
    xorg-x11-server-common-1.17.4-18.55.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

xorg-x11-server: before 1.17.4-18.55

External links

http://alas.aws.amazon.com/ALAS-2024-1928.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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