vulnerability
Exim: Loop with Unreachable Exit Condition ('Infinite Loop') (CVE-2017-16944)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Nov 25, 2017 | Dec 3, 2019 | Apr 7, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Nov 25, 2017
Added
Dec 3, 2019
Modified
Apr 7, 2026
Description
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.
Solution
exim-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
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