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Vulnerability Details : CVE-2021-4008

A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Publish Date : 2021-12-17 Last Update Date : 2022-03-30
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 119

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2022:0003: xorg-x11-server security update (Important) oval:com.redhat.rhsa:def:20220003 unix
RHSA-2022:1917: xorg-x11-server and xorg-x11-server-Xwayland security update (Moderate) oval:com.redhat.rhsa:def:20221917 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-4008

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
3 OS Debian Debian Linux 11.0 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 34 * * * Version Details Vulnerabilities
5 OS Fedoraproject Fedora 35 * * * Version Details Vulnerabilities
6 Application X.org X Server * * * * Version Details Vulnerabilities
7 Application X.org X Server 21.1.0 * * * Version Details Vulnerabilities
8 Application X.org X Server 21.1.1 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 3
Fedoraproject Fedora 2
X.org X Server 3

- References For CVE-2021-4008

https://lists.fedoraproject.org/archives/list/[email protected]/message/NXTRPFEQLFZ6NT2LPLZEID664RGC3OCC/
FEDORA FEDORA-2021-664a6554a1
https://security.netapp.com/advisory/ntap-20220114-0004/ CONFIRM
https://www.zerodayinitiative.com/advisories/ZDI-21-1547/
https://lists.debian.org/debian-lts-announce/2021/12/msg00035.html
MLIST [debian-lts-announce] 20211229 [SECURITY] [DLA 2869-1] xorg-server security update
https://www.debian.org/security/2021/dsa-5027
DEBIAN DSA-5027
https://lists.fedoraproject.org/archives/list/[email protected]/message/T57DCF726O5LLTST4NBL5PQ7DLPB46HT/
FEDORA FEDORA-2021-a7fd510294
https://lists.fedoraproject.org/archives/list/[email protected]/message/PDHYZM6FII35JA7J275MFCJO6ADJUPQX/
FEDORA FEDORA-2021-2eb603951b
https://lists.x.org/archives/xorg-announce/2021-December/003122.html
https://lists.x.org/archives/xorg-announce/2021-December/003124.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/NKLSZCY47QK4RCJFXITYFALCGPJAFXOK/
FEDORA FEDORA-2021-69e96c8f68

- Metasploit Modules Related To CVE-2021-4008

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)
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