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GHSA-5x79-w82f-gw8w
No affected components available
Summary
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.
Mitigation
Upgrade to rails-html-sanitizer >= 1.4.4.
Severity
The maintainers have evaluated this as High Severity 7.5 (CVSS3.1).
References
- CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)
- https://hackerone.com/reports/1684163
Credit
This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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