CVE-2015-9239 Regular Expression Denial of Service in ansi2html
Attackers can cause denial of service in ansi2html by submitting specially crafted input that triggers excessive regular expression processing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2015-9239?
CVE-2015-9239 is a high-severity denial of service vulnerability in HackerOne ansi2html node module, published on 31 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ansi2html is vulnerable to regular expression denial of service (ReDoS) when certain types of user input is passed in.
Which versions are affected by CVE-2015-9239?
2 open source packages ship an affected version, including ansi2html. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ansi2html npm | From 0.0.0 | None |
ansi2html npm | From 0.0.0 | None |
Products include Ansi2html Project Ansi2html.
How do I fix CVE-2015-9239?
No fix has been published for CVE-2015-9239 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-2015-9239 being exploited?
There is no known exploitation of CVE-2015-9239 in the wild and no public exploit code.
Sources
Also known as GHSA-c2v2-7rcg-2ch7.