Auth bypass in Supermicro A1sa2-2750f
CVE-2019-16649
On Supermicro H11, H12, M11, X9, X10, and X11 products, a combination of encryption and authentication problems in the virtual media service allows capture of BMC credentials and data transferred over virtual media devices. Attackers can use captured credentials to connect virtual USB devices to the server managed by the BMC.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Supermicro A1sa2-2750f
- Supermicro A1sa2-2750f Firmware — versions 3.83
- Supermicro A1sai-2550f
- Supermicro A1sai-2550f Firmware — versions 3.83
- Supermicro A1sai-2750f
- Supermicro A1sai-2750f Firmware — versions 3.83
- Supermicro A1sam-2550f
- Supermicro A1sam-2550f Firmware — versions 3.83
- Supermicro A1sam-2750f
- Supermicro A1sam-2750f Firmware — versions 3.83
Weakness classification (CWE)
References
- eclypsium.com/2019/09/03/usbanywhere-bmc-vulnerability-opens-servers-to-remote-… (Third Party Advisory)
- github.com/eclypsium/USBAnywhere (Third Party Advisory)
- www.supermicro.com/support/security_BMC_virtual_media.cfm (Vendor Advisory)
Frequently asked questions
- What is CVE-2019-16649?
- CVE-2019-16649 is a critical-severity vulnerability in Supermicro A1sa2-2750f, classified under Improper Authentication. CVSS score: 10.0/10. Published 2019-09-21.
- How severe is CVE-2019-16649?
- Critical severity. CVSS v3 base score is 10.0 out of 10.