CVE-2021-20254
- State
- Published
- Severity
- Not scored
- Published
- May 5, 2021
- Updated
- Aug 3, 2024
- Reserved
- Dec 17, 2020
Description
A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.
Scores
The record has no CVSS score.
Weaknesses
Affected Products
| Product | Versions |
|---|---|
samban/a |
|
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1949442
- https://www.samba.org/samba/security/CVE-2021-20254.html
- https://security.netapp.com/advisory/ntap-20210430-0001/
- FEDORA-2021-1d0807008bvendor-advisory
- FEDORA-2021-7026246ea9vendor-advisory
- GLSA-202105-22vendor-advisory
- [debian-lts-announce] 20210529 [SECURITY] [DLA 2668-1] samba security updatemailing-list
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