Loop with Unreachable Exit Condition ('Infinite Loop') Affecting exim4 package, versions <4.89-13
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Test your applications- Snyk ID SNYK-DEBIAN11-EXIM4-525541
- published 25 Nov 2017
- disclosed 25 Nov 2017
Introduced: 25 Nov 2017
CVE-2017-16944 Open this link in a new tabHow to fix?
Upgrade Debian:11 exim4 to version 4.89-13 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.
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.