Vulnerability Description
Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack. Users are advised to upgrade to Nokogiri `>= 1.13.10`. Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nokogiri | Nokogiri | 1.13.8 |
Related Weaknesses (CWE)
References
- https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b84PatchThird Party Advisory
- https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25dePatchThird Party Advisory
- https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprThird Party Advisory
- https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b84PatchThird Party Advisory
- https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25dePatchThird Party Advisory
- https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprThird Party Advisory
FAQ
What is CVE-2022-23476?
CVE-2022-23476 is a vulnerability with a CVSS score of 7.5 (HIGH). Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML...
How severe is CVE-2022-23476?
CVE-2022-23476 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-23476?
Check the references section above for vendor advisories and patch information. Affected products include: Nokogiri Nokogiri.