Integer Overflow or Wraparound Affecting exim4 package, versions <4.89-2+deb9u8
Snyk CVSS
Attack Complexity
Low
Confidentiality
High
Integrity
High
Availability
High
Threat Intelligence
EPSS
0.05% (13th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN9-EXIM4-1279389
- published 5 May 2021
- disclosed 6 May 2021
Introduced: 5 May 2021
CVE-2020-28009 Open this link in a new tabHow to fix?
Upgrade Debian:9
exim4
to version 4.89-2+deb9u8 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:9
relevant fixed versions and status.
Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because get_stdinput allows unbounded reads that are accompanied by unbounded increases in a certain size variable. NOTE: exploitation may be impractical because of the execution time needed to overflow (multiple days).