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.Referenceshttps://www.facebook.com/security/advisories/cve-2019-11923https://github.com/facebook/mcrouter/releases/tag/v0.41.0-releasehttps://github.com/facebook/mcrouter/commit/98ce6624cd2563cfdb5da3b2949d5e1e03867034
