Improper Input Validation Affecting exim4 package, versions <4.92~RC3-1


Severity

Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    97.37% (100th percentile)

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  • Snyk ID SNYK-DEBIAN11-EXIM4-521209
  • published 5 Jun 2019
  • disclosed 5 Jun 2019

How to fix?

Upgrade Debian:11 exim4 to version 4.92~RC3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream exim4 package and not the exim4 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

CVSS Scores

version 3.1
Expand this section

NVD

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