gsd-2022-4318
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
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.
Aliases
Aliases
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"description": "### Impact\nIt is possible to craft an environment variable with newlines to add entries to a container\u0027s /etc/passwd. It is possible to circumvent admission validation of username/UID by adding such an entry.\n\nNote: because the pod author is in control of the container\u0027s /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.\n\n### Patches\n1.26.0 will have the fix. More patches will be posted as they\u0027re available.\n\n### Workarounds\nAdditional 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\u0027s /etc/passwd \n\n### References\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.