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CVE-2017-16944

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 201803-01
Posted Mar 6, 2018
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201803-1 - Multiple vulnerabilities have been found in Exim, the worst of which allows remote attackers to execute arbitrary code. Versions less than 4.90.1 are affected.

tags | advisory, remote, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2017-16943, CVE-2017-16944, CVE-2018-6789
SHA-256 | fae08f3a967abdc43a1c026ad3ce23d707d739eacf930009ae729881c47b4e5c
Ubuntu Security Notice USN-3499-1
Posted Nov 29, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3499-1 - It was discovered that Exim incorrectly handled certain BDAT data headers. A remote attacker could possibly use this issue to cause Exim to crash, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2017-16944
SHA-256 | 84f6e7318add2363801a7c087f557e0bfddc5858647315c8653fcfcb594b870e
Exim 4.89 Denial Of Service
Posted Nov 27, 2017
Authored by meh

Exim version 4.89 suffers from a denial of service vulnerability while parsing the BDAT data header.

tags | exploit, denial of service
advisories | CVE-2017-16944
SHA-256 | 06400f3e55ff24c12a728e79c0653462e865d8c5b296a559adff089a0a57f067
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