Two privilege escalation vulnerabilities in Exim
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2011-0017 CVE-2010-4345 |
| CWE-ID | CWE-78 |
| Exploitation vector | Local |
| Public exploit |
Public exploit code for vulnerability #1 is available. Vulnerability #2 is being exploited in the wild. |
| Vulnerable software Subscribe |
Exim Server applications / Mail servers |
| Vendor | Exim |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Privilege escalation
EUVDB-ID: #VU342
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2011-0017
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the vulnerable system.
The vulnerability exists due to Exim implementation on Linux system does not check return values from the setuid()/setgid() system calls. A local user can execute arbitrary commands on the system with root privileges.
Successful exploitation of this vulnerability will allow a local user to gain root privileges on the system.
MitigationUpdate to version 4.73.
Vulnerable software versionsExim: 4.70 - 4.72
External linkshttp://github.com/Exim/exim/wiki/EximSecurity
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
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.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) Privilege escalation
EUVDB-ID: #VU341
Risk: Low
CVSSv3.1: 6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:H/RL:O/RC:C]
CVE-ID: CVE-2010-4345
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on vulnerable system.
The vulnerability exists due to design error in Exim, when allowing local users to load arbitrary configuration file via the "spool_directory" directive. A local user can specify an alternate configuration file with a directive that contains arbitrary commands and execute arbitrary commands on the system with root privileges.
Successful exploitation of this vulnerability will allow a local user to gain root privileges on the system.
MitigationUpdate to version 4.73.
Vulnerable software versionsExim: 4.70 - 4.72
External linkshttp://github.com/Exim/exim/wiki/EximSecurity
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
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.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
