Vulnerability Details : CVE-2019-9501
The Broadcom wl WiFi driver is vulnerable to a heap buffer overflow. By supplying a vendor information element with a data length larger than 32 bytes, a heap buffer overflow is triggered in wlc_wpa_sup_eapol. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.
Vulnerability category: OverflowMemory CorruptionExecute codeDenial of service
Products affected by CVE-2019-9501
- cpe:2.3:o:broadcom:bcm4339_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:a:synology:router_manager:1.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-9501
6.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-9501
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.3
|
HIGH | AV:A/AC:L/Au:N/C:C/I:C/A:C |
6.5
|
10.0
|
NIST | |
|
7.9
|
HIGH | CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
1.2
|
6.0
|
CERT/CC | |
|
8.8
|
HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2019-9501
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: cret@cert.org (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-9501
-
https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html
Reverse-engineering Broadcom wireless chipsetsExploit;Third Party Advisory
-
https://kb.cert.org/vuls/id/166939/
VU#166939 - Broadcom WiFi chipset drivers contain multiple vulnerabilitiesThird Party Advisory;US Government Resource
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