CVE-2021-33580
regex injection leading to DoS
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 3.3%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
18 Aug 2021Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
Affected products
Apache Software Foundation · Apache RollerWant to know if your infrastructure is exposed to this?
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