Resource exhaustion in Oracle Enterprise_manager_ops_center
CVE-2021-33503
An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL w…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.032 (86.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Oracle Enterprise_manager_ops_center — versions 12.4.0.0
- Oracle Instantis_enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Zfs_storage_appliance_kit — versions 8.8
- Python Urllib3
- Fedoraproject Fedora — versions 33, 34
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33503?
- CVE-2021-33503 is a high-severity vulnerability in Oracle Enterprise_manager_ops_center, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-06-29.
- How severe is CVE-2021-33503?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-33503 known to be exploited?
- 12 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.