Arbitrary Code Injection Affecting exim4 package, versions *


Severity

Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    0.14% (51st percentile)

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  • Snyk ID SNYK-DEBIAN11-EXIM4-1538494
  • published 11 Aug 2021
  • disclosed 10 Aug 2021

How to fix?

There is no fixed version for Debian:11 exim4.

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.

The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.

CVSS Scores

version 3.1
Expand this section

NVD

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