Out-of-bounds Read Affecting samba-winbind-32bit package, versions <4.9.5+git.432.d9b18c4f390-3.50.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating

    Threat Intelligence

    EPSS
    0.42% (75th percentile)

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  • Snyk ID SNYK-SLES151-SAMBAWINBIND32BIT-2681517
  • published 14 Apr 2022
  • disclosed 4 May 2021

How to fix?

Upgrade SLES:15.1 samba-winbind-32bit to version 4.9.5+git.432.d9b18c4f390-3.50.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba-winbind-32bit package and not the samba-winbind-32bit package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

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.

CVSS Scores

version 3.1
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NVD

6.8 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    None
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SUSE

7.1 high
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Red Hat

6.8 medium