Debian Security Advisory DSA 4110-1 (exim4 - security update)

Published: 2018-02-09 23:00:00
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

Affected Versions:
exim4 on Debian Linux

Recommendations:
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 Linux Distribution Packages. For the detailed security status of exim4 please refer to its security tracker page linked in the references.

Summary:
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.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-6789

References:

https://www.debian.org/security/2018/dsa-4110.html
https://security-tracker.debian.org/tracker/exim4

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Severity
High
CVSS Score
7.5

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