CVE-2020-28018

critical

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.

References

http://www.openwall.com/lists/oss-security/2021/05/12/3

http://www.openwall.com/lists/oss-security/2021/05/12/2

http://www.openwall.com/lists/oss-security/2021/05/11/6

http://www.openwall.com/lists/oss-security/2021/05/11/5

http://www.openwall.com/lists/oss-security/2021/05/11/17

http://www.openwall.com/lists/oss-security/2021/05/11/15

http://www.openwall.com/lists/oss-security/2021/05/11/14

https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective

https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt

Details

Source: Mitre, NVD

Published: 2021-05-06

Updated: 2021-05-26

Named Vulnerability: 21Nails

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.62787