Vulnerability Details : CVE-2022-4283
A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.
Vulnerability category: Execute code
Products affected by CVE-2022-4283
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:x.org:xorg-server:1.20.4:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-4283
0.51%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-4283
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
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-2022-4283
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-4283
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https://bugzilla.redhat.com/show_bug.cgi?id=2151761
2151761 – (CVE-2022-4283) CVE-2022-4283 xorg-x11-server: X.Org Server XkbGetKbdByName use-after-freeIssue Tracking;Third Party Advisory
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https://access.redhat.com/security/cve/CVE-2022-4283
CVE-2022-4283- Red Hat Customer PortalThird Party Advisory
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https://security.gentoo.org/glsa/202305-30
X.Org X server, XWayland: Multiple Vulnerabilities (GLSA 202305-30) — Gentoo security
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5NELB7YDWRABYYBG4UPTHRBDTKJRV5M2/
[SECURITY] Fedora 37 Update: xorg-x11-server-Xwayland-22.1.6-1.fc37 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DXDF2O5PPLE3SVAJJYUOSAD5QZ4TWQ2G/
[SECURITY] Fedora 37 Update: xorg-x11-server-1.20.14-11.fc37 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://www.debian.org/security/2022/dsa-5304
Debian -- Security Information -- DSA-5304-1 xorg-serverThird Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z67QC4C3I2FI2WRFIUPEHKC36J362MLA/
[SECURITY] Fedora 36 Update: xorg-x11-server-1.20.14-12.fc36 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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