Headline
CVE-2022-3560: Local privilege escalation on pesign systemd service
A flaw was found in pesign. The pesign package provides a systemd service used to start the pesign daemon. This service unit runs a script to set ACLs for /etc/pki/pesign and /run/pesign directories to grant access privileges to users in the ‘pesign’ group. However, the script doesn’t check for symbolic links. This could allow an attacker to gain access to privileged files and directories via a path traversal attack.
Bug 2135420 (CVE-2022-3560) - CVE-2022-3560 pesign: Local privilege escalation on pesign systemd service
Summary: CVE-2022-3560 pesign: Local privilege escalation on pesign systemd service
Keywords:
Status:
MODIFIED
Alias:
CVE-2022-3560
Product:
Security Response
Classification:
Other
Component:
vulnerability
Sub Component:
Version:
unspecified
Hardware:
All
OS:
Linux
Priority:
high
Severity:
high
Target Milestone:
—
Assignee:
Red Hat Product Security
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
2135819 2135820 2135821 2135822 2135823 2135825 2135826 2135828 2164235 2164236 2165983 2135824 2135827
Blocks:
2134226
TreeView+
depends on / blocked
Reported:
2022-10-17 15:26 UTC by Marco Benatto
Modified:
2023-01-31 18:58 UTC (History)
CC List:
5 users (show)
Fixed In Version:
pesign-116
Doc Type:
If docs needed, set a value
Doc Text:
A flaw was found in pesign. The pesign package provides a systemd service used to start the pesign daemon. This service unit runs a script to set ACLs for /etc/pki/pesign and /run/pesign directories to grant access privileges to users in the ‘pesign’ group. However, the script doesn’t check for symbolic links. This could allow an attacker to gain access to privileged files and directories via a path traversal attack.
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Environment:
Last Closed:
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Description Marco Benatto 2022-10-17 15:26:49 UTC
The pesign deamon started by the systemd service of the pesign package in vulnerable to a path traversal vulnerability allow a local privilege escalation. When properly exploited this flaw allows a malicious unprivileged user with access to pesign user or group can gain access to higher privileged files and directories.
Comment 17 Marco Benatto 2023-01-31 16:00:11 UTC
Created pesign tracking bugs for this issue:
Affects: fedora-all [bug 2165983]
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