ASA-201910-1 log generated external raw
[ASA-201910-1] exim: arbitrary code execution |
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Arch Linux Security Advisory ASA-201910-1
=========================================
Severity: Critical
Date : 2019-10-02
CVE-ID : CVE-2019-16928
Package : exim
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-1038
Summary
=======
The package exim before version 4.92.3-1 is vulnerable to arbitrary
code execution.
Resolution
==========
Upgrade to 4.92.3-1.
# pacman -Syu "exim>=4.92.3-1"
The problem has been fixed upstream in version 4.92.3.
Workaround
==========
None.
Description
===========
It has been discovered that Exim before 4.92.3 is vulnerable to a heap-
based buffer overflow in string_vformat (string.c) involving a long
EHLO command leading to remote code execution.
Impact
======
A remote attacker is able to execute arbitrary code on the affected
host by sending a specifically crafted long EHLO command.
References
==========
https://www.exim.org/static/doc/security/CVE-2019-16928.txt
https://bugs.exim.org/show_bug.cgi?id=2449
https://git.exim.org/exim.git/commitdiff/478effbfd9c3cc5a627fc671d4bf94d13670d65f
https://www.openwall.com/lists/oss-security/2019/09/28/1
https://security.archlinux.org/CVE-2019-16928
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