CVE-2024-1892

Description

A Regular Expression Denial of Service (ReDoS) vulnerability exists in the XMLFeedSpider class of the scrapy/scrapy project, specifically in the parsing of XML content. By crafting malicious XML content that exploits inefficient regular expression complexity used in the parsing process, an attacker can cause a denial-of-service (DoS) condition. This vulnerability allows for the system to hang and consume significant resources, potentially rendering services that utilize Scrapy for XML processing unresponsive.

Predictions

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

References

• https://github.com/scrapy/scrapy/security/advisories/GHSA-cc65-xxvf-f7r9
• https://github.com/scrapy/scrapy/commit/479619b340f197a8f24c5db45bc068fb8755f2c5
• https://github.com/scrapy/scrapy/commit/73e7c0ed011a0565a1584b8052ec757b54e5270b
• https://docs.scrapy.org/en/latest/news.html#scrapy-1-8-4-2024-02-14
• https://docs.scrapy.org/en/latest/news.html#scrapy-2-11-1-2024-02-14
• https://github.com/pypa/advisory-database/tree/main/vulns/scrapy/PYSEC-2024-162.yaml
• https://github.com/scrapy/scrapy
• https://huntr.com/bounties/271f94f2-1e05-4616-ac43-41752389e26b
• https://security-tracker.debian.org/tracker/CVE-2024-1892