Race Condition Affecting cifs-utils package, versions <2:4.5-1


Severity

Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    0.06% (26th percentile)

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  • Snyk ID SNYK-DEBIAN10-CIFSUTILS-315101
  • published 27 Jun 2018
  • disclosed 31 Dec 2019

How to fix?

Upgrade Debian:10 cifs-utils to version 2:4.5-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cifs-utils package and not the cifs-utils package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

Multiple race conditions in the (1) mount.cifs and (2) umount.cifs programs in Samba 3.6 allow local users to cause a denial of service (mounting outage) via a SIGKILL signal during a time window when the /etc/mtab~ file exists.

CVSS Scores

version 3.1
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NVD

4.7 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

4 medium