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CVE-2020-28026

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Date: May 5, 2021

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.

Language: C

Severity Score

Related Resources (6)

https://security-tracker.debian.org/tracker/CVE-2020-28026
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28026-FGETS.txt
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-28026
https://nvd.nist.gov/vuln/detail/CVE-2020-28026
https://security.alpinelinux.org/vuln/CVE-2020-28026
https://www.mend.io/vulnerability-database/CVE-2020-28026

Severity Score

Weakness Type (CWE)

Argument Injection or Modification

CWE-88

Top Fix

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CVSS v3.1

Base Score:
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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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