Vulnerability Description
User controlled `request.getHeader("Referer")`, `request.getRequestURL()` and `request.getQueryString()` are used to build and run a regex expression. The attacker doesn't have to use a browser and may send a specially crafted Referer header programmatically. Since the attacker controls the string and the regex pattern he may cause a ReDoS by regex catastrophic backtracking on the server side. This problem has been fixed in Roller 6.0.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Roller | < 6.0.2 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/08/18/1Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r9d967d80af941717573e531db2c7353a90bfd0886eMailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2021/08/18/1Mailing ListThird Party Advisory
- https://lists.apache.org/thread.html/r9d967d80af941717573e531db2c7353a90bfd0886eMailing ListVendor Advisory
FAQ
What is CVE-2021-33580?
CVE-2021-33580 is a vulnerability with a CVSS score of 7.5 (HIGH). User controlled `request.getHeader("Referer")`, `request.getRequestURL()` and `request.getQueryString()` are used to build and run a regex expression. The attacker doesn't have to use a browser and ma...
How severe is CVE-2021-33580?
CVE-2021-33580 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-2021-33580?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Roller.