THREATPORT/VULNERABILITY/CVE-2021-33580
HIGH SEVERITY

CVE-2021-33580

Roller vulnerability

CVSS
7.5
EPSS
3.3%
EPSS pct
87th
Exploited
No known
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 vendor
Apache
Affected product
Roller
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-400 — Uncontrolled Resource Consumption
Published
2021-08-18

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2021-33580

  • Confirm whether Apache Roller is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-33580.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-33580

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-33580 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2021-33580?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2021-33580.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH
CVE-2015-5087
Acrobat vulnerability
HIGH
CVE-2015-5091
Acrobat vulnerability
HIGH
CVE-2015-5093
Acrobat vulnerability