Inefficient Regular Expression Complexity in rails-html-sanitizer
CVE-2022-23517

7.5HIGH

Key Information:

Vendor

Rails

Status
Rails-html-sanitizer
Vendor
CVE Published:
14 December 2022

What is CVE-2022-23517?

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Certain configurations of rails-html-sanitizer < 1.4.4 use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. This issue has been patched in version 1.4.4.

Affected Version(s)

rails-html-sanitizer < 1.4.4

References

https://github.com/rails/rails-html-sanitizer/security/ad...
x_refsource_CONFIRM
https://github.com/rails/rails-html-sanitizer/commit/56c6...
x_refsource_MISC
https://hackerone.com/reports/1684163
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.