CVE-2020-1073
A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka 'Scripting Engine Memory Corruption Vulnerability'.
No known exploitation. EPSS puts it in the 95th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
ChakraCore RCE Vulnerability
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
8.6% chance of exploitation activity in the next 30 days, which ranks it in the 95th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
7 events over 2207 days, from the signal feeds we watch.
- OpenVAS check added
- EPSS band changemoderate → low
- Patch availablerecord updated
- Publishedweakness classified, att&ck mapped
Affected products
- Microsoft EdgeConsumer Software / browser
- ChakraCoreOperating Systems / linux-distro
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit SystemsOperating Systems / windows
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based SystemsConsumer Software / browser
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based SystemsConsumer Software / browser
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit SystemsOperating Systems / windows
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based SystemsConsumer Software / browser
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based SystemsConsumer Software / browser
And 18 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Scored 8.1 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Initial AccessT1190Exploit Public-Facing Applicationhigh confidence
- Privilege EscalationT1068Exploitation for Privilege Escalationhigh confidence
Sources
References in the record
- nvd.nist.gov/vuln/detail/CVE-2020-1073
- github.com/chakra-core/ChakraCore/pull/6464
- github.com/chakra-core/ChakraCore/commit/82d3c4556a3cba13f0115fc98a91263b15fa6d07
And 2 more references. See all after sign-in
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