CVE-2007-6739 Improper Input Validation in pyftpdlib

What is CVE-2007-6739?

CVE-2007-6739 is a medium-severity denial of service vulnerability in n/a, published on 19 Oct 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

FTPServer.py in pyftpdlib before 0.2.0 allows remote attackers to cause a denial of service via a long command.

Weakness: CWE-20

Which versions are affected by CVE-2007-6739?

3 open source packages ship an affected version, including pyftpdlib. It affects 1 product.

Products include G.rodola Pyftpdlib.

How do I fix CVE-2007-6739?

Upgrade pyftpdlib to 0.2.0 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2007-6739 being exploited?

There is no known exploitation of CVE-2007-6739 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2007-6737 Improper Authentication in pyftpdlib High 7.5
• CVE-2008-7263 Improper Authentication in pyftpdlib High 7.5
• CVE-2007-6736 Directory Traversal in pyftpdlib Medium 6.5
• CVE-2007-6741 Improper privilege management in pyftpdlib Medium 6.5
• CVE-2008-7262 Directory traversal in pyftpdlib Medium 6.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5f3f-pg2c-cxcv, PYSEC-2010-23.