Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2019-13917 |
CWE-ID | CWE-78 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Exim Server applications / Mail servers |
Vendor | Exim |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU19368
Risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-13917
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to insufficient filtering of user-supplied data under certain conditions, e.g. if your configuration uses the ${sort } expansion. A remote unauthenticated attacker can send a specially crafted email, modify $local_part or $domain items, inject and execute arbitrary OS commands on the target system with root privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system however requires non-default exim configuration.
MitigationInstall updates from vendor's website.
Vulnerable software versionsExim: 4.85 - 4.92
External linkshttp://exim.org/static/doc/security/CVE-2019-13917.txt
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.