CVE-2022-4318
UNKNOWN
Published 2023-09-25T19:23:02.119Z
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CVSS Score
V3.1
7.8
/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A
Impact: N/A
EPSS Score
v2023.03.01
0.000
probability
of exploitation in the wild
There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.
Updated: 2025-01-25
Exploit Probability
Percentile: 0.051
Higher than 5.1% of all CVEs
Attack Vector Metrics
Impact Metrics
Description
A vulnerability was found in cri-o. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.
Available Exploits
No exploits available for this CVE.
Related News
No news articles found for this CVE.
Affected Products
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
✓ GitHub Reviewed
MODERATE
CRI-O vulnerable to /etc/passwd tampering resulting in Privilege Escalation
GHSA-cm9x-c3rh-7rc4Advisory Details
### Impact
It is possible to craft an environment variable with newlines to add entries to a container's /etc/passwd. It is possible to circumvent admission validation of username/UID by adding such an entry.
Note: because the pod author is in control of the container's /etc/passwd, this is not considered a new risk factor. However, this advisory is being opened for transparency and as a way of tracking fixes.
### Patches
1.26.0 will have the fix. More patches will be posted as they're available.
### Workarounds
Additional security controls like SELinux should prevent any damage a container is able to do with root on the host. Using SELinux is recommended because this class of attack is already possible by manually editing the container's /etc/passwd
### References
Affected Packages
Go
github.com/cri-o/cri-o
ECOSYSTEM:
≥0
<1.26.0
CVSS Scoring
CVSS Score
5.0
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N
References
PACKAGE
https://github.com/cri-o/cri-o
Advisory provided by GitHub Security Advisory Database. Published: December 29, 2022, Modified: December 29, 2022
References
Published: 2023-09-25T19:23:02.119Z
Last Modified: 2024-08-03T01:34:50.124Z
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