CVE-2020-28025Out-of-bounds Read in Exim

CWE-125Out-of-bounds Read8 documents7 sources
Severity
7.5HIGHNVD
EPSS
1.8%
top 17.18%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 6
Latest updateMay 24

Description

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 vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages1 packages

NVDexim/exim4.004.94.2

🔴Vulnerability Details

3
GHSA
GHSA-g68g-g7cj-r38f: Exim 4 before 42022-05-24
OSV
CVE-2020-28025: Exim 4 before 42021-05-06
CVEList
CVE-2020-28025: Exim 4 before 42021-05-06

📋Vendor Advisories

3
Ubuntu
Exim vulnerabilities2021-05-06
Ubuntu
Exim vulnerabilities2021-05-04
Debian
CVE-2020-28025: exim4 - Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash doe...2020

🕵️Threat Intelligence

1
Qualys
21Nails: Multiple Critical Vulnerabilities in Exim Mail Server2021-05-04