Use After Free Affecting exim4 package, versions <4.94.2-1
Snyk CVSS
Attack Complexity
Low
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
EPSS
3.35% (92nd
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN11-EXIM4-1279417
- published 5 May 2021
- disclosed 6 May 2021
Introduced: 5 May 2021
CVE-2020-28018 Open this link in a new tabHow to fix?
Upgrade Debian:11
exim4
to version 4.94.2-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream exim4
package and not the exim4
package as distributed by Debian
.
See How to fix?
for Debian:11
relevant fixed versions and status.
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
- https://security-tracker.debian.org/tracker/CVE-2020-28018
- https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txt
- http://www.openwall.com/lists/oss-security/2021/05/11/14
- http://www.openwall.com/lists/oss-security/2021/05/11/15
- http://www.openwall.com/lists/oss-security/2021/05/11/17
- http://www.openwall.com/lists/oss-security/2021/05/11/5
- http://www.openwall.com/lists/oss-security/2021/05/11/6
- http://www.openwall.com/lists/oss-security/2021/05/12/2
- http://www.openwall.com/lists/oss-security/2021/05/12/3