CVE-2009-4013 Path traversal in n/a

What is CVE-2009-4013?

CVE-2009-4013 is a critical path traversal vulnerability in Canonical Ubuntu Linux, published on 2 Feb 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Multiple directory traversal vulnerabilities in Lintian 1.23.x through 1.23.28, 1.24.x through 1.24.2.1, and 2.x before 2.3.2 allow remote attackers to overwrite arbitrary files or obtain sensitive information via vectors involving (1) control field names, (2) control field values, and (3) control files of patch systems.

Weakness: CWE-22

Which versions are affected by CVE-2009-4013?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Debian Lintian.

How do I fix CVE-2009-4013?

Upgrade to a fixed version.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2009-4013 being exploited?

There is no known exploitation of CVE-2009-4013 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2009-4013, GHSA-8fqg-637q-r2qf.