CVE-2020-28018 — Use After Free in Exim

CWE-416 — Use After Free7 documents7 sources
Severity
9.8CRITICALNVD
EPSS
78.7%
top 0.96%
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 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.

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/exim4.90 — 4.94.2

🔴Vulnerability Details

3
GHSA
GHSA-5hqr-vx33-mfmh: Exim 4 before 4↗2022-05-24
▶
CVEList
CVE-2020-28018: Exim 4 before 4↗2021-05-06
▶
OSV
CVE-2020-28018: Exim 4 before 4↗2021-05-06
▶

📋Vendor Advisories

2
Ubuntu
Exim vulnerabilities↗2021-05-04
▶
Debian
CVE-2020-28018: exim4 - Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations t...↗2020
▶

🕵️Threat Intelligence

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