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.
Vulnerability category: Overflow
Products affected by CVE-2021-4008
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:x.org:x_server:21.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:x.org:x_server:21.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-4008
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 14 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-4008
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2021-4008
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2021-4008
-
https://www.debian.org/security/2021/dsa-5027
Debian -- Security Information -- DSA-5027-1 xorg-serverThird Party Advisory
-
https://security.netapp.com/advisory/ntap-20220114-0004/
January 2022 X.Org X Server Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://security.gentoo.org/glsa/202305-30
X.Org X server, XWayland: Multiple Vulnerabilities (GLSA 202305-30) — Gentoo security
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PDHYZM6FII35JA7J275MFCJO6ADJUPQX/
[SECURITY] Fedora 35 Update: xorg-x11-server-Xwayland-21.1.4-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.x.org/archives/xorg-announce/2021-December/003122.html
X.Org Security Advisory: December 14, 2021Vendor Advisory
-
https://www.zerodayinitiative.com/advisories/ZDI-21-1547/
ZDI-21-1547 | Zero Day InitiativeThird Party Advisory;VDB Entry
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NXTRPFEQLFZ6NT2LPLZEID664RGC3OCC/
[SECURITY] Fedora 34 Update: xorg-x11-server-1.20.14-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NKLSZCY47QK4RCJFXITYFALCGPJAFXOK/
[SECURITY] Fedora 34 Update: xorg-x11-server-Xwayland-21.1.4-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T57DCF726O5LLTST4NBL5PQ7DLPB46HT/
[SECURITY] Fedora 35 Update: xorg-x11-server-1.20.14-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/12/msg00035.html
[SECURITY] [DLA 2869-1] xorg-server security updateMailing List;Third Party Advisory
-
https://lists.x.org/archives/xorg-announce/2021-December/003124.html
[ANNOUNCE] xorg-server 1.20.14Vendor Advisory
Jump to