This security bulletin contains one medium risk vulnerability.
CWE-416 - Use After Free
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in the regex handler. A remote attacker can send specially crafted data to the mail server, trigger a use-after-free error and perform a denial of service (DoS) attack.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.Vulnerable software versions
Exim: 4.87 - 4.96External links
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.