CVE-2011-1156 feedparser denial of service vulnerability
Remote attackers can crash the application by sending a malformed DOCTYPE declaration to the Universal Feed Parser library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-1156?
CVE-2011-1156 is a medium-severity denial of service vulnerability in n/a, published on 11 Apr 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) before 5.0.1 allows remote attackers to cause a denial of service (application crash) via a malformed DOCTYPE declaration.
Weakness: CWE-399
Which versions are affected by CVE-2011-1156?
3 open source packages ship an affected version, including feedparser. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
feedparser PyPI | All versions | 5.0.1 |
feedparser PyPI | From 4.1 | 5.0.1 |
feedparser PyPI | From 4.1 | 5.0.1 |
Products include Mark Pilgrim Feedparser.
How do I fix CVE-2011-1156?
Upgrade feedparser to 5.0.1 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-2011-1156 being exploited?
There is no known exploitation of CVE-2011-1156 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2011-1156, GHSA-6h52-4vmh-8x4f, PYSEC-2011-19.