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Exim Denial of Service Vulnerability: CVE-2017-16944

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Exim Denial of Service Vulnerability: CVE-2017-16944

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
11/24/2017
Created
07/25/2018
Added
11/28/2017
Modified
12/08/2017

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(s)

  • exim-upgrade-4_90
  • exim-disable-chunking

References

  • exim-upgrade-4_90
  • exim-disable-chunking

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