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lol-html panics on certain HTML inputs

High severity GitHub Reviewed Published Aug 8, 2023 in cloudflare/lol-html • Updated Nov 9, 2023

Package

cargo lol-html (Rust)

Affected versions

< 1.1.1

Patched versions

1.1.1

Description

Impact

lol-html can cause panics on certain HTML inputs. Anyone processing arbitrary 3rd party HTML with the library is affected.

Patches

The problem has been patched and released as v1.1.1

Workarounds

No workarounds exist.

References

@inikulin inikulin published to cloudflare/lol-html Aug 8, 2023
Published to the GitHub Advisory Database Aug 9, 2023
Reviewed Aug 9, 2023
Published by the National Vulnerability Database Aug 16, 2023
Last updated Nov 9, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.078%
(34th percentile)

Weaknesses

CVE ID

CVE-2023-4241

GHSA ID

GHSA-c3x7-354f-4p2x

Source code

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