CVE-2020-28026 — Argument Injection in Exim

CWE-88 — Argument Injection9 documents7 sources
Severity
9.8CRITICALNVD
EPSS
4.3%
top 11.17%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Exim
Timeline
PublishedMay 6
Latest updateMay 24

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages1 packages

▶NVDexim/exim4.00 — 4.94.2

🔴Vulnerability Details

4
GHSA
GHSA-gf8c-vh34-8jv5: Exim 4 before 4↗2022-05-24
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OSV
CVE-2020-28026: Exim 4 before 4↗2021-05-06
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OSV
exim4 vulnerabilities↗2021-05-06
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CVEList
CVE-2020-28026: Exim 4 before 4↗2021-05-06
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📋Vendor Advisories

3
Ubuntu
Exim vulnerabilities↗2021-05-06
▶
Ubuntu
Exim vulnerabilities↗2021-05-04
▶
Debian
CVE-2020-28026: exim4 - Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in...↗2020
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🕵️Threat Intelligence

1
Qualys
21Nails: Multiple Critical Vulnerabilities in Exim Mail Server↗2021-05-04
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