6.9
CVSSv2

CVE-2011-0017

Published: 02/02/2011 Updated: 17/08/2017
CVSS v2 Base Score: 6.9 | Impact Score: 10 | Exploitability Score: 3.4
VMScore: 614
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Summary

The open_log function in log.c in Exim 4.72 and previous versions does not check the return value from (1) setuid or (2) setgid system calls, which allows local users to append log data to arbitrary files via a symlink attack.

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exim exim 4.43

exim exim 4.34

exim exim 4.61

exim exim 4.60

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exim exim 4.65

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exim exim 4.69

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exim exim 4.63

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exim exim 4.21

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exim exim 4.41

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exim exim 4.04

exim exim 4.03

exim exim 3.32

exim exim 3.31

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exim exim 4.64

exim exim 4.23

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exim exim 4.68

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exim exim 4.14

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exim exim 3.34

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exim exim 3.16

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exim exim 4.33

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exim exim 4.54

exim exim 4.53

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exim exim 4.66

exim exim 4.67

exim exim 4.11

exim exim 4.12

exim exim 4.00

exim exim 3.36

exim exim 3.35

exim exim 3.21

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exim exim 3.10

exim exim 3.03

exim exim 4.70

exim exim 4.71

Vendor Advisories

It was discovered that Exim contained a design flaw in the way it processed alternate configuration files An attacker that obtained privileges of the “Debian-exim” user could use an alternate configuration file to obtain root privileges (CVE-2010-4345) ...
A design flaw (CVE-2010-4345) in exim4 allowed the local Debian-exim user to obtain root privileges by specifying an alternate configuration file using the -C option or by using the macro override facility (-D option) Unfortunately, fixing this vulnerability is not possible without some changes in exim4's behaviour If you use the -C or -D options ...