6.8
CVE-2021-20254
- EPSS 0.34%
- Published 05.05.2021 14:15:07
- Last modified 21.11.2024 05:46:13
- Source secalert@redhat.com
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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.
Data is provided by the National Vulnerability Database (NVD)
Fedoraproject ≫ Fedora Version32
Fedoraproject ≫ Fedora Version33
Redhat ≫ Enterprise Linux Version7.0
Redhat ≫ Enterprise Linux Version8.0
Debian ≫ Debian Linux Version9.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.34% | 0.563 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 6.8 | 1.6 | 5.2 |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
|
| nvd@nist.gov | 4.9 | 6.8 | 4.9 |
AV:N/AC:M/Au:S/C:P/I:P/A:N
|
CWE-125 Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.