Input validation error in Exim
| 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 Subscribe |
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: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2014-2972
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsExim: 4.00 - 4.82
External linkshttp://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?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
