CVE-2009-0321 Denial of service in n/a

Medium 4.3 Published 28 Jan 2009 Updated 7 Aug 2024

Remote attackers can crash Apple Safari on Windows by tricking users into clicking a link with a dot or dot-dot hostname.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2009-0321?

CVE-2009-0321 is a medium-severity denial of service vulnerability in Apple Safari, published on 28 Jan 2009. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Apple Safari 3.2.1 (aka AppVer 3.525.27.1) on Windows allows remote attackers to cause a denial of service (infinite loop or access violation) via a link to an http URI in which the authority (aka hostname) portion is either a (1) . (dot) or (2) .. (dot dot) sequence.

Weakness: CWE-59

Which versions are affected by CVE-2009-0321?

It affects 1 product.

Products include Apple Safari.

How do I fix CVE-2009-0321?

No fix has been published for CVE-2009-0321 yet. Limit exposure of the affected software until one is available.

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-2009-0321 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-0321 exists.

Public exploit code: 1 Exploit-DB entry.

All Apple Safari vulnerabilities

Sources

Also known as GHSA-r82w-5vrw-9x74.