CVE-2019-11923 Denial of service in Mcrouter
An attacker can cause resource exhaustion and denial of service in Mcrouter by exploiting a lack of maximum length enforcement in the deprecated ASCII parser.
- 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-2019-11923?
CVE-2019-11923 is a high-severity denial of service vulnerability in Facebook Mcrouter, published on 4 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Mcrouter prior to v0.41.0, the deprecated ASCII parser would allocate a buffer to a user-specified length with no maximum length enforced, allowing for resource exhaustion or denial of service.
Weakness: CWE-770
Which versions are affected by CVE-2019-11923?
It affects 1 product.
Products include Facebook Mcrouter.
How do I fix CVE-2019-11923?
No fix has been published for CVE-2019-11923 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-2019-11923 being exploited?
There is no known exploitation of CVE-2019-11923 in the wild and no public exploit code.
Other vulnerabilities in Facebook Mcrouter
Sources
Also known as GHSA-wjxh-p937-x4v8.