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) | 2017-11-25 | 2019-12-03 | 2024-11-27 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
2017-11-25
Added
2019-12-03
Modified
2024-11-27
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
- CVE-2017-16944
- https://attackerkb.com/topics/CVE-2017-16944
- URL-http://openwall.com/lists/oss-security/2017/11/25/1
- URL-http://openwall.com/lists/oss-security/2017/11/25/2
- URL-http://openwall.com/lists/oss-security/2017/11/25/3
- URL-http://www.openwall.com/lists/oss-security/2021/05/04/7
- URL-http://www.securitytracker.com/id/1039873
- URL-https://bugs.exim.org/show_bug.cgi?id=2201
- URL-https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
- URL-https://www.debian.org/security/2017/dsa-4053
- URL-https://www.exploit-db.com/exploits/43184/
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