High severityNVD Advisory· Published Jun 28, 2021· Updated Aug 3, 2024
Regular Expression Denial of Service (ReDoS) in Prism
CVE-2021-32723
Description
Prism is a syntax highlighting library. Some languages before 1.24.0 are 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. This problem has been fixed in Prism v1.24. 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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
prismjsnpm | < 1.24.0 | 1.24.0 |
Affected products
2Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-gj77-59wh-66hgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-32723ghsaADVISORY
- github.com/PrismJS/prism/commit/d85e30da6755fdbe7f8559f8e75d122297167018ghsaWEB
- github.com/PrismJS/prism/pull/2688ghsax_refsource_MISCWEB
- github.com/PrismJS/prism/pull/2774ghsax_refsource_MISCWEB
- github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hgghsax_refsource_CONFIRMWEB
- www.oracle.com/security-alerts/cpujan2022.htmlghsax_refsource_MISCWEB
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