CVE-2012-5496 Plone DoS via Crafted URL

What is CVE-2012-5496?

CVE-2012-5496 is a medium-severity denial of service vulnerability in Plone Plone, published on 30 Sep 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

kupu_spellcheck.py in Kupu in Plone before 4.0 allows remote attackers to cause a denial of service (ZServer thread lock) via a crafted URL.

Weakness: CWE-399

Which versions are affected by CVE-2012-5496?

3 open source packages ship an affected version, including plone and Plone. It affects 1 product.

Products include Plone Plone.

How do I fix CVE-2012-5496?

Upgrade plone to a fixed version for your release line: 3.3.6 or 4.0.

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-2012-5496 being exploited?

There is no known exploitation of CVE-2012-5496 in the wild and no public exploit code.

Other vulnerabilities in Plone Plone

• CVE-2021-33509 Incorrect Permission Assignment for Critical Resource in Plone Critical 9.9
• CVE-2020-35190 Hardcoded credentials in n/a Critical 9.8
• CVE-2020-7941 Plone Unauthenticated Write Vulnerability Critical 9.8
• CVE-2011-3587 Zope Command Execution Vulnerability Critical 9.3
• CVE-2021-33926 Server-Side Request Forgery in Plone CMS High 8.8

All Plone Plone vulnerabilities

Sources

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

Also known as GHSA-gx6w-hcw3-5r37, PYSEC-2014-38.