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Alpine Linux Development TeamALPINE:CVE-2023-0494HistoryMar 27, 2023 - 9:15 p.m.
CVE-2023-0494
2023-03-2721:15:10
Alpine Linux Development Team
security.alpinelinux.org
13
x.org
deepcopypointerclasses
local privilege escalation
remote code execution
freed memory
ssh x forwarding
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.3 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
51.8%
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Alpine | edge-community | noarch | xorg-server | < 21.1.7-r0 | UNKNOWN |
| Alpine | edge-community | noarch | xwayland | < 22.1.8-r0 | UNKNOWN |
| Alpine | 3.17-community | noarch | xorg-server | < 21.1.7-r0 | UNKNOWN |
| Alpine | 3.17-community | noarch | xwayland | < 22.1.8-r0 | UNKNOWN |
| Alpine | 3.18-community | noarch | xorg-server | < 21.1.7-r0 | UNKNOWN |
| Alpine | 3.18-community | noarch | xwayland | < 22.1.8-r0 | UNKNOWN |
| Alpine | 3.19-community | noarch | xorg-server | < 21.1.7-r0 | UNKNOWN |
| Alpine | 3.19-community | noarch | xwayland | < 22.1.8-r0 | UNKNOWN |
| Alpine | 3.20-community | noarch | xorg-server | < 21.1.7-r0 | UNKNOWN |
| Alpine | 3.20-community | noarch | xwayland | < 22.1.8-r0 | UNKNOWN |
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7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.3 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
51.8%
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