Auth bypass in Qualcomm Sd 820
CVE-2016-10434
In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Automobile and Snapdragon Mobile SD 820 and SD 820A, the input to RPMB write response function is a buffer from HLOS that needs to be authenticated (using HMAC) and then processed. However, some of the processing occurs before the buffer is authenticated. The function will return various types of errors depending on the values of the `response` and `result` fields of the buffer before verifying the HMAC tag.
Vulnerability class: Broken Authentication
EPSS: 0.008 (54.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
Weakness classification (CWE)
References
- product-security@qualcomm.com (x_refsource_CONFIRM, Vendor Advisory)
- product-security@qualcomm.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2016-10434?
- CVE-2016-10434 is a high-severity vulnerability in Qualcomm Sd 820, classified under Improper Authentication. CVSS score: 7.5/10. Published 2018-04-18.
- How severe is CVE-2016-10434?
- High severity. CVSS v3 base score is 7.5 out of 10.