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x/net/html Vulnerable to DoS During HTML Parsing

High severity GitHub Reviewed Published Sep 25, 2023 to the GitHub Advisory Database • Updated May 20, 2024

Package

gomod golang.org/x/net (Go)

Affected versions

< 0.0.0-20190125091013-d26f9f9a57f3

Patched versions

0.0.0-20190125091013-d26f9f9a57f3

Description

The html package (aka x/net/html) through 2018-09-25 in Go mishandles <table><math><select><mi><select></table>, leading to an infinite loop during an html.Parse call because inSelectIM and inSelectInTableIM do not comply with a specification.

References

Published to the GitHub Advisory Database Sep 25, 2023
Reviewed Sep 25, 2023
Last updated May 20, 2024

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

0.247%
(65th percentile)

Weaknesses

CVE ID

CVE-2018-17846

GHSA ID

GHSA-vfw5-hrgq-h5wf

Source code

No known source code
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