CVE-2014-2957: Input Validation

First published: Thu Sep 04 2014(Updated: )

The dmarc_process function in dmarc.c in Exim before 4.82.1, when EXPERIMENTAL_DMARC is enabled, allows remote attackers to execute arbitrary code via the From header in an email, which is passed to the expand_string function.

Credit: cret@cert.org

Affected Software	Affected Version	How to fix
Exim Exim	<=4.82
Exim Exim	=4.00
Exim Exim	=4.01
Exim Exim	=4.02
Exim Exim	=4.03
Exim Exim	=4.04
Exim Exim	=4.05
Exim Exim	=4.10
Exim Exim	=4.11
Exim Exim	=4.12
Exim Exim	=4.14
Exim Exim	=4.20
Exim Exim	=4.21
Exim Exim	=4.22
Exim Exim	=4.23
Exim Exim	=4.24
Exim Exim	=4.30
Exim Exim	=4.31
Exim Exim	=4.32
Exim Exim	=4.33
Exim Exim	=4.34
Exim Exim	=4.40
Exim Exim	=4.41
Exim Exim	=4.42
Exim Exim	=4.43
Exim Exim	=4.44
Exim Exim	=4.50
Exim Exim	=4.51
Exim Exim	=4.52
Exim Exim	=4.53
Exim Exim	=4.54
Exim Exim	=4.60
Exim Exim	=4.61
Exim Exim	=4.62
Exim Exim	=4.63
Exim Exim	=4.64
Exim Exim	=4.65
Exim Exim	=4.66
Exim Exim	=4.67
Exim Exim	=4.68
Exim Exim	=4.69
Exim Exim	=4.70
Exim Exim	=4.71
Exim Exim	=4.72
Exim Exim	=4.73
Exim Exim	=4.74
Exim Exim	=4.75
Exim Exim	=4.76
Exim Exim	=4.77
Exim Exim	=4.80
Exim Exim	=4.80.1

Remedy

https://lists.exim.org/lurker/message/20140528.122536.a31d60a4.en.html

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