CVE-2020-0848 Out-of-bounds write in ChakraCore

What is CVE-2020-0848?

CVE-2020-0848 is a high-severity memory corruption vulnerability in Microsoft Chakracore, published on 12 Mar 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2020-0768, CVE-2020-0823, CVE-2020-0825, CVE-2020-0826, CVE-2020-0827, CVE-2020-0828, CVE-2020-0829, CVE-2020-0830, CVE-2020-0831, CVE-2020-0832, CVE-2020-0833.

Weakness: CWE-787

Which versions are affected by CVE-2020-0848?

2 open source packages ship an affected version, including Microsoft.ChakraCore. It affects 2 products.

Products include Microsoft Chakracore, Microsoft Edge.

How do I fix CVE-2020-0848?

Upgrade Microsoft.ChakraCore to 1.11.17 or later.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-0848 being exploited?

There is no known exploitation of CVE-2020-0848 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-5p67-cp9c-hqw4.