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CVE-2020-8159

CRITICALCVSS 9.8/10EPSS 5.25%

Last modified

CVE-2020-8159 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. There is a vulnerability in actionpack_page-caching gem < v1.2.1 that allows an attacker to write arbitrary files to a web server, potentially resulting in remote code execution if the attacker can write unescaped ERB to a view.. EPSS estimates a 5.25% chance of exploitation in the next 30 days.

Description

There is a vulnerability in actionpack_page-caching gem < v1.2.1 that allows an attacker to write arbitrary files to a web server, potentially resulting in remote code execution if the attacker can write unescaped ERB to a view.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
5.25%

91.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RubyonrailsActionpack Page-Caching< 1.2.1
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-8159?
There is a vulnerability in actionpack_page-caching gem < v1.2.1 that allows an attacker to write arbitrary files to a web server, potentially resulting in remote code execution if the attacker can write unescaped ERB to a view.
How severe is CVE-2020-8159?
CVE-2020-8159 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.25% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8159?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8159?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST