Denial of service in ProFTPD
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-18217 |
| CWE-ID | CWE-835 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
ProFTPD Server applications / File servers (FTP/HTTP) |
| Vendor | ProFTPD |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Infinite loop
EUVDB-ID: #VU22564
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-18217
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in main.c in a child process when handling overly long commands. A remote non-authenticated attacker can perform a denial of service attack by sending an overly log command to the affected FTP server.
MitigationInstall updates from vendor's website.
Vulnerable software versionsProFTPD: 1.3.0 - 1.3.6a
External linkshttp://github.com/proftpd/proftpd/blob/1.3.6/NEWS
http://github.com/proftpd/proftpd/blob/1.3.6/RELEASE_NOTES
http://github.com/proftpd/proftpd/blob/master/NEWS
http://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES
http://github.com/proftpd/proftpd/issues/846
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.
