Race Condition Affecting exim4 package, versions <4.72-1


low

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
NVD  medium

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  • Snyk ID SNYK-DEBIAN12-EXIM4-1545032
  • published 7 Jun 2010
  • disclosed 7 Jun 2010

How to fix?

Upgrade Debian:12 exim4 to version 4.72-1 or higher.

NVD Description

Note: Versions mentioned in the description apply to the upstream exim4 package. See How to fix? for Debian:12 relevant versions.

transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.