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Debian Security Advisory DSA-4110-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
February 10, 2018                     https://www.debian.org/security/faq
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Package        : exim4
CVE ID         : CVE-2018-6789
Debian Bug     : 890000

Meh Chang discovered a buffer overflow flaw in a utility function used
in the SMTP listener of Exim, a mail transport agent. A remote attacker
can take advantage of this flaw to cause a denial of service, or
potentially the execution of arbitrary code via a specially crafted
message.

For the oldstable distribution (jessie), this problem has been fixed
in version 4.84.2-2+deb8u5.

For the stable distribution (stretch), this problem has been fixed in
version 4.89-2+deb9u3.

We recommend that you upgrade your exim4 packages.

For the detailed security status of exim4 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/exim4

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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