CVE-2017-16944

35Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendepss 63%

from disclosure to weapon2 days

Published on NVDNov 25

1st PoC+2d

exploitation probability

63%top 1% of all CVEs

observed exploitation

nono source reports it

2 public exploit(s)

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.

Affected products

n/a · n/a

public PoCs found — 2

cve_referencewww.exploit-db.com/exploits/43184/unverified exploitdbwww.exploit-db.com/exploits/43184unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

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 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/http://www.openwall.com/lists/oss-security/2021/05/04/7 http://www.securitytracker.com/id/1039873