#VU75703 Memory leak in ProFTPD - CVE-2021-46854

Vulnerability identifier: #VU75703

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-46854

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ProFTPD
Server applications / File servers (FTP/HTTP)

Vendor: ProFTPD

Description
The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due memory leak in mod_radius. A remote attacker can force the application to disclose memory to the RADIUS server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ProFTPD: 1.3.0a - 1.3.7

---

External links
https://github.com/proftpd/proftpd/issues/1284
https://github.com/proftpd/proftpd/pull/1285
https://bugs.gentoo.org/811495
https://www.proftpd.org/docs/RELEASE_NOTES-1.3.7e

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.