CVE-2018-6346 Denial of service in Proxygen

What is CVE-2018-6346?

CVE-2018-6346 is a high-severity denial of service vulnerability in Facebook Proxygen, published on 31 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 priority settings (specifically a circular dependency). This affects Proxygen prior to v2018.12.31.00.

Weakness: CWE-388, CWE-400

Which versions are affected by CVE-2018-6346?

It affects 1 product.

Products include Proxygen Project Proxygen.

How do I fix CVE-2018-6346?

No fix has been published for CVE-2018-6346 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-2018-6346 being exploited?

There is no known exploitation of CVE-2018-6346 in the wild and no public exploit code.

Other vulnerabilities in Facebook Proxygen

• CVE-2015-7264 Other in Facebook Proxygen before 2015-11-09 Critical 9.8
• CVE-2018-6347 Denial of service in Proxygen High 7.5
• CVE-2015-7263 Security feature bypass in Facebook Proxygen before 2015-11-09 High 7.5
• CVE-2015-7265 Security feature bypass in Facebook Proxygen before 2015-11-09 High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-gvqg-4vgr-vq39.