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Out-of-Bounds Affecting exim4 package, versions <4.89-2+deb9u3

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 96.76% (100th percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-DEBIAN9-EXIM4-382871
  • published 8 Feb 2018
  • disclosed 8 Feb 2018
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Introduced: 8 Feb 2018

CVE-2018-6789 Open this link in a new tab
CWE-119 Open this link in a new tab

How to fix?

Upgrade Debian:9 exim4 to version 4.89-2+deb9u3 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:9 relevant fixed versions and status.

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.

References