CVE-2020-28022 — Out-of-bounds Write in Exim

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer9 documents8 sources
Severity
9.8CRITICALNVD
EPSS
2.2%
top 15.63%
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 Restriction of Write Operations within the Bounds of a Memory Buffer. This occurs when processing name=value pairs within MAIL FROM and RCPT TO commands.

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

3
GHSA
GHSA-j453-4grx-f82g: Exim 4 before 4↗2022-05-24
▶
CVEList
CVE-2020-28022: Exim 4 before 4↗2021-05-06
▶
OSV
CVE-2020-28022: Exim 4 before 4↗2021-05-06
▶

📋Vendor Advisories

3
Ubuntu
Exim vulnerabilities↗2021-05-06
▶
Ubuntu
Exim vulnerabilities↗2021-05-04
▶
Debian
CVE-2020-28022: exim4 - Exim 4 before 4.94.2 has Improper Restriction of Write Operations within the Bou...↗2020
▶

🕵️Threat Intelligence

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

📄Research Papers

1
arXiv
A Survey on Data-driven Software Vulnerability Assessment and Prioritization↗2022-04-04
▶