CVE-2020-23315 Denial of service in n/a

What is CVE-2020-23315?

CVE-2020-23315 is a high-severity denial of service vulnerability in Microsoft Chakracore, published on 20 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

There is an ASSERTION (pFuncBody->GetYieldRegister() == oldYieldRegister) failed in Js::DebugContext::RundownSourcesAndReparse in ChakraCore version 1.12.0.0-beta.

Which versions are affected by CVE-2020-23315?

It affects 1 product.

Products include Microsoft Chakracore.

How do I fix CVE-2020-23315?

No fix has been published for CVE-2020-23315 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-2020-23315 being exploited?

There is no known exploitation of CVE-2020-23315 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Chakracore

• CVE-2018-8298 ChakraCore Scripting Engine Type Confusion Exploited High 7.5
• CVE-2020-0878 Microsoft Edge and Internet Explorer Memory Corruption Exploited Medium 4.2
• CVE-2018-8500 ChakraCore RCE Vulnerability Critical 9.8
• CVE-2017-11767 ChakraCore vulnerable to privilege escalation Critical 9.8
• CVE-2017-8658 ChakraCore RCE Vulnerability Critical 9.8

All Microsoft Chakracore vulnerabilities

Sources

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

Also known as GHSA-2hmc-2j98-55mm.