CVE-2012-2921 feedparser denial of service vulnerability
Remote attackers can cause denial of service via memory consumption using crafted XML entities in non-ASCII documents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-2921?
CVE-2012-2921 is a medium-severity denial of service vulnerability in n/a, published on 21 May 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Universal Feed Parser (aka feedparser or python-feedparser) before 5.1.2 allows remote attackers to cause a denial of service (memory consumption) via a crafted XML ENTITY declaration in a non-ASCII encoded document.
Weakness: CWE-399
Which versions are affected by CVE-2012-2921?
3 open source packages ship an affected version, including feedparser. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
feedparser PyPI | All versions | 5.1.2 |
feedparser PyPI | All versions | 5.1.2 |
feedparser PyPI | All versions | 5.1.2 |
Products include Mark Pilgrim Feedparser.
How do I fix CVE-2012-2921?
Upgrade feedparser to 5.1.2 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-2012-2921 being exploited?
There is no known exploitation of CVE-2012-2921 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2012-2921, GHSA-hjf3-r7gw-9rwg, PYSEC-2012-14.