Buffer overflow in Broadcom Hardmac Wi-Fi Soc
CVE-2017-6956
On the Broadcom Wi-Fi HardMAC SoC with fbt firmware, a stack buffer overflow occurs when handling an 802.11r (FT) authentication response, leading to remote code execution via a crafted access point that sends a long R0KH-ID field in a Fast BSS Transition Information Element (FT-IE).
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (79.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Broadcom Hardmac Wi-Fi Soc
- Broadcom Hardmac Wi-Fi Soc Firmware — versions 6.37.34.40
Weakness classification (CWE)
References
- bugs.chromium.org/p/project-zero/issues/detail (Third Party Advisory)
- googleprojectzero.blogspot.com/2017/04/over-air-exploiting-broadcoms-wi-fi_4.ht… (Third Party Advisory)
Frequently asked questions
- What is CVE-2017-6956?
- CVE-2017-6956 is a high-severity vulnerability in Broadcom Hardmac Wi-Fi Soc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-04-05.
- How severe is CVE-2017-6956?
- High severity. CVSS v3 base score is 8.8 out of 10.