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Bug 1517684 - (CVE-2017-16944) CVE-2017-16944 exim: infinite loop and stack exhaustion in receive_msg function via vectors involving BDAT commands
CVE-2017-16944 exim: infinite loop and stack exhaustion in receive_msg functi...
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20171124,repo...
: Security
Depends On: 1517686 1517687
Blocks:
  Show dependency tree / graph
 
Reported: 2017-11-27 03:53 EST by Adam Mariš
Modified: 2017-11-27 04:02 EST (History)
4 users (show)

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Last Closed: 2017-11-27 04:02:37 EST
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Description Adam Mariš 2017-11-27 03:53:16 EST 
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.

Upstream bug:

https://bugs.exim.org/show_bug.cgi?id=2201
Comment 1 Adam Mariš 2017-11-27 03:54:26 EST 
Created exim tracking bugs for this issue:

Affects: epel-all [bug 1517686]
Affects: fedora-all [bug 1517687]
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