Vulnerability CVE-2021-4010
Published: 2021-12-17

Description:
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 SProcScreenSaverSuspend function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.6/10
6.4/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
X.org -> X server 
Fedoraproject -> Fedora 
Debian -> Debian linux 

 References:
https://lists.x.org/archives/xorg-announce/2021-December/003124.html
https://lists.x.org/archives/xorg-announce/2021-December/003122.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PDHYZM6FII35JA7J275MFCJO6ADJUPQX/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T57DCF726O5LLTST4NBL5PQ7DLPB46HT/
https://www.zerodayinitiative.com/advisories/ZDI-21-1549/
https://www.debian.org/security/2021/dsa-5027
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