Vulnerability identifier: #VU56351

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1957

CWE-ID: CWE-284

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
APQ8017
Hardware solutions / Firmware
QCA6174A
Hardware solutions / Firmware
QCA6574AU
Hardware solutions / Firmware
SA6155P
Hardware solutions / Firmware
SD855
Hardware solutions / Firmware
SDX55
Hardware solutions / Firmware
QCA6390
Mobile applications / Mobile firmware & hardware
QCA6391
Mobile applications / Mobile firmware & hardware
QCA6421
Mobile applications / Mobile firmware & hardware
QCA6426
Mobile applications / Mobile firmware & hardware
QCA6431
Mobile applications / Mobile firmware & hardware
QCA6436
Mobile applications / Mobile firmware & hardware
QCA6696
Mobile applications / Mobile firmware & hardware
QCM6125
Mobile applications / Mobile firmware & hardware
QCS610
Mobile applications / Mobile firmware & hardware
QCS6125
Mobile applications / Mobile firmware & hardware
QRB5165
Mobile applications / Mobile firmware & hardware
Qualcomm215
Mobile applications / Mobile firmware & hardware
SA6145P
Mobile applications / Mobile firmware & hardware
SA6150P
Mobile applications / Mobile firmware & hardware
SA8145P
Mobile applications / Mobile firmware & hardware
SA8150P
Mobile applications / Mobile firmware & hardware
SA8155P
Mobile applications / Mobile firmware & hardware
SA8195P
Mobile applications / Mobile firmware & hardware
SD8655G
Mobile applications / Mobile firmware & hardware
SD870
Mobile applications / Mobile firmware & hardware
SDX55M
Mobile applications / Mobile firmware & hardware
SDXR25G
Mobile applications / Mobile firmware & hardware
WCD9326
Mobile applications / Mobile firmware & hardware
WCD9335
Mobile applications / Mobile firmware & hardware
WCD9341
Mobile applications / Mobile firmware & hardware
WCD9370
Mobile applications / Mobile firmware & hardware
WCD9380
Mobile applications / Mobile firmware & hardware
WCD9385
Mobile applications / Mobile firmware & hardware
WCN3610
Mobile applications / Mobile firmware & hardware
WCN3615
Mobile applications / Mobile firmware & hardware
WCN3660B
Mobile applications / Mobile firmware & hardware
WCN3680
Mobile applications / Mobile firmware & hardware
WCN3950
Mobile applications / Mobile firmware & hardware
WCN3980
Mobile applications / Mobile firmware & hardware
WCN3990
Mobile applications / Mobile firmware & hardware
WCN3998
Mobile applications / Mobile firmware & hardware
WCN6850
Mobile applications / Mobile firmware & hardware
WCN6851
Mobile applications / Mobile firmware & hardware
WSA8810
Mobile applications / Mobile firmware & hardware
WSA8815
Mobile applications / Mobile firmware & hardware

Vendor: Qualcomm

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due improper Access Control when ACL link encryption is failed and ACL link is not disconnected during reconnection with paired device. A local user can per form a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

APQ8017: All versions

QCA6174A: All versions

QCA6390: All versions

QCA6391: All versions

QCA6421: All versions

QCA6426: All versions

QCA6431: All versions

QCA6436: All versions

QCA6574AU: All versions

QCA6696: All versions

QCM6125: All versions

QCS610: All versions

QCS6125: All versions

QRB5165: All versions

Qualcomm215: All versions

SA6145P: All versions

SA6150P: All versions

SA6155P: All versions

SA8145P: All versions

SA8150P: All versions

SA8155P: All versions

SA8195P: All versions

SD855: All versions

SD8655G: All versions

SD870: All versions

SDX55: All versions

SDX55M: All versions

SDXR25G: All versions

WCD9326: All versions

WCD9335: All versions

WCD9341: All versions

WCD9370: All versions

WCD9380: All versions

WCD9385: All versions

WCN3610: All versions

WCN3615: All versions

WCN3660B: All versions

WCN3680: All versions

WCN3950: All versions

WCN3980: All versions

WCN3990: All versions

WCN3998: All versions

WCN6850: All versions

WCN6851: All versions

WSA8810: All versions

WSA8815: All versions

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External links
http://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin
http://source.codeaurora.org/quic/la/platform/vendor/qcom-opensource/system/bt/commit/?id=91aad9e40bc8332a0241e88c2e100eff8851cc98
http://source.codeaurora.org/quic/le/platform/system/bt/commit/?id=0e713342ba8e9f96a0ffcc7accb631e41d10aa0f

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.