CVE-2017-16944
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.
| Software | From | Fixed in |
|---|---|---|
| exim / exim | 4.88 | 4.88.x |
| exim / exim | 4.89 | 4.89.x |
| debian / debian_linux | 9.0 | 9.0.x |
- http://openwall.com/lists/oss-security/2017/11/25/1
- http://openwall.com/lists/oss-security/2017/11/25/2
- http://openwall.com/lists/oss-security/2017/11/25/3
- http://www.openwall.com/lists/oss-security/2021/05/04/7
- http://www.securitytracker.com/id/1039873
- https://bugs.exim.org/show_bug.cgi?id=2201
- https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
- https://www.debian.org/security/2017/dsa-4053
- https://www.exploit-db.com/exploits/43184/
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