Input validation error in Exim



Published: 2014-09-04 | Updated: 2020-08-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2014-2972
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Exim
Server applications / Mail servers

Vendor Exim

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU41356

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2014-2972

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

expand.c in Exim before 4.83 expands mathematical comparisons twice, which allows local users to gain privileges and execute arbitrary commands via a crafted lookup value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Exim: 4.00 - 4.82


CPE2.3 External links

http://git.exim.org/exim.git/commitdiff/7685ce68148a083d7759e78d01aa5198fc099c44
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136251.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136264.html
http://www.ubuntu.com/usn/USN-2933-1
http://bugzilla.redhat.com/show_bug.cgi?id=1122552
http://lists.exim.org/lurker/message/20140722.145949.42c043f5.en.html
http://lists.exim.org/lurker/message/20140722.152452.d6c019e8.en.html
http://security.gentoo.org/glsa/201607-12

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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