CVE-2007-3998 Denial of service in n/a

What is CVE-2007-3998?

CVE-2007-3998 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 4 Sep 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The wordwrap function in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, does not properly use the breakcharlen variable, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash, or infinite loop) via certain arguments, as demonstrated by a 'chr(0), 0, ""' argument set.

Weakness: CWE-20

Which versions are affected by CVE-2007-3998?

It affects 3 products.

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

How do I fix CVE-2007-3998?

Upgrade to a fixed version.

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-2007-3998 being exploited?

There is no known exploitation of CVE-2007-3998 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 GHSA-7r5x-79rr-q8gm.