Resource exhaustion in Ui Ep-R6
CVE-2019-16889
Ubiquiti EdgeMAX devices before 2.0.3 allow remote attackers to cause a denial of service (disk consumption) because *.cache files in /var/run/beaker/container_file/ are created when providing a valid length payload of 249 characters or fewer to the beaker.session.id cookie in a GET header. The attacker can use a long series of unique session IDs.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.051 (92.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.051 · newest: 0.051 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- mjlanders.com/2019/07/28/resource-consumption-dos-on-edgemax-v1-10-6/ (Exploit, Third Party Advisory)
- hackerone.com/reports/406614 (Exploit, Third Party Advisory, Issue Tracking)
- community.ui.com/releases/New-EdgeRouter-firmware-2-0-3-has-been-released-2-0-3… (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-16889?
- CVE-2019-16889 is a high-severity vulnerability in Ui Ep-R6, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2019-09-25.
- How severe is CVE-2019-16889?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-16889 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.