Out-of-bounds Read Affecting exim package, versions <4.94.2-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.14% (51st percentile)

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  • Snyk IDSNYK-ALPINE320-EXIM-7009386
  • published23 May 2024
  • disclosed6 May 2021

Introduced: 6 May 2021

CVE-2020-28025  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Alpine:3.20 exim to version 4.94.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream exim package and not the exim package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory.

CVSS Scores

version 3.1