CVE-2021-32723: Uncontrolled Resource Consumption

June 28, 2021 (updated March 28, 2022)

Prism is a syntax highlighting library. Some languages is vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text.

References

nvd.nist.gov/vuln/detail/CVE-2021-32723

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