#VU25596 Out-of-bounds read in ProFTPD - CVE-2020-9272

Vulnerability identifier: #VU25596

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-9272

CWE-ID: CWE-125

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 potentially sensitive information.

The vulnerability exists due to a boundary condition in mod_cap within bundled libpcab library code (via the cap_text.c cap_to_text function). A remote attacker can send specially crafted traffic to the server, trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ProFTPD: 1.3.6 rc1 - 1.3.7 rc2

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External links
https://github.com/proftpd/proftpd/releases/tag/v1.3.7rc3
https://github.com/proftpd/proftpd/blob/1.3.6/RELEASE_NOTES

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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.