Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2020-28026

Published: May 06, 2021 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
9.3 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-28026
CWEhttps://cwe.mitre.org/data/definitions/NVD-Other.html

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification (DSN). Certain uses of ORCPT= can place a newline into a spool header file, and indirectly allow unauthenticated remote attackers to execute arbitrary commands as root.

Affected Software

NameVendorStart VersionEnd Version
EximExim4.00 (including)4.94.2 (excluding)
Exim4Ubuntubionic*
Exim4Ubuntudevel*
Exim4Ubuntuesm-infra-legacy/trusty*
Exim4Ubuntuesm-infra/bionic*
Exim4Ubuntuesm-infra/focal*
Exim4Ubuntuesm-infra/xenial*
Exim4Ubuntufocal*
Exim4Ubuntugroovy*
Exim4Ubuntuhirsute*
Exim4Ubuntuimpish*
Exim4Ubuntujammy*
Exim4Ubuntutrusty*
Exim4Ubuntutrusty/esm*
Exim4Ubuntuxenial*

References

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