Vulnerability CVE-2017-11121
Published: 2017-09-27   Modified: 2017-09-28

Description:
On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, properly crafted malicious over-the-air Fast Transition frames can potentially trigger internal Wi-Fi firmware heap and/or stack overflows, leading to denial of service or other effects, aka B-V2017061205.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Broadcom 802.11r (FT) Reassociation Response Overflows
laginimaineb
26.09.2017

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
10/10
10/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Broadcom -> Bcm4355c0 firmware 
Apple -> Iphone os 
Apple -> Apple tv 
Apple -> TVOS 

 References:
http://packetstormsecurity.com/files/144329/Broadcom-802.11r-FT-Reassociation-Response-Overflows.html
http://www.securityfocus.com/bid/100984
https://bugs.chromium.org/p/project-zero/issues/detail?id=1291
https://lists.apple.com/archives/security-announce/2017/Sep/msg00007.html
https://lists.apple.com/archives/security-announce/2017/Sep/msg00009.html
https://source.android.com/security/bulletin/2017-09-01
https://support.apple.com/en-us/HT208112
https://support.apple.com/en-us/HT208113
https://support.apple.com/HT208112
https://support.apple.com/HT208113
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