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Test ID:1.3.6.1.4.1.25623.1.0.140539
Category:SMTP problems
Title:Exim Multiple RCE Vulnerabilities
Summary:Exim is prone to multiple remote code execution vulnerabilities.
Description:Summary:
Exim is prone to multiple remote code execution vulnerabilities.

Vulnerability Insight:
Exim is prone to multiple remote code execution vulnerabilities:

- Use-after-free vulnerability while reading mail header (CVE-2017-16943)

- Exim handles BDAT data incorrectly and leads to crash (CVE-2017-16944)

Vulnerability Impact:
A remote attacker may execute arbitrary commands or conduct a denial of
service attack.

Affected Software/OS:
Exim version 4.88 and 4.89.

Solution:
Apply the provided patch or update to version 4.90 or later. As a
mitigation set 'chunking_advertise_hosts = ' in the Exim configuration.

CVSS Score:
7.5

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2017-16943
Common Vulnerability Exposure (CVE) ID: CVE-2017-16944
CopyrightCopyright (C) 2017 Greenbone Networks GmbH

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