#VU61840 Time-of-check Time-of-use (TOCTOU) Race Condition in Qualcomm products - CVE-2021-30342

Cybersecurity Help s.r.o.

Published: 2022-04-04

Vulnerability identifier: #VU61840

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-30342

CWE-ID: CWE-367

Exploitation vector: Network

Exploit availability: No

Vendor: Qualcomm

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition in LTE component between PDCP and RRC tasks when processing RRC Command packets. A remote attacker can send specially crafted packets to the device and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

APQ8009W: All versions

APQ8017: All versions

APQ8096AU: All versions

AQT1000: All versions

CSRB31024: All versions

FSM10055: All versions

FSM10056: All versions

MDM8207: All versions

MDM9150: All versions

MDM9205: All versions

MDM9206: All versions

MDM9207: All versions

MDM9250: All versions

MDM9607: All versions

MDM9628: All versions

MDM9640: All versions

MDM9650: All versions

MDM9655: All versions

MSM8909W: All versions

MSM8996AU: All versions

QCA4004: All versions

QCA6174A: All versions

QCA6420: All versions

QCA6430: All versions

QCA6564A: All versions

QCA6564AU: All versions

QCA6574: All versions

QCA6574A: All versions

QCA6574AU: All versions

QCA6584: All versions

QCA6584AU: All versions

QCA6595AU: All versions

QCA6696: All versions

QCA9367: All versions

QCA9377: All versions

QCM2290: All versions

QCM4290: All versions

QCM6125: All versions

QCS2290: All versions

QCS410: All versions

QCS4290: All versions

QCS610: All versions

QCS6125: All versions

QSW8573: All versions

SA415M: All versions

SA6145P: All versions

SA6150P: All versions

SA6155P: All versions

SA8145P: All versions

SA8150P: All versions

SA8155P: All versions

SA8195P: All versions

SD675: All versions

SD8cxGen2: All versions

SD205: All versions

SD210: All versions

SD429: All versions

SD439: All versions

SD460: All versions

SD660: All versions

SD662: All versions

SD665: All versions

SD678: All versions

SD680: All versions

SD720G: All versions

SD730: All versions

SD7c: All versions

SD850: All versions

SD855: All versions

SDA429W: All versions

SDM429W: All versions

SDW2500: All versions

SDX12: All versions

SDX20: All versions

SDX24: All versions

SDXR1: All versions

SM6250: All versions

SM6250P: All versions

SW5100: All versions

SW5100P: All versions

WCD9306: All versions

WCD9330: All versions

WCD9370: All versions

WCD9375: All versions

WCD9380: All versions

WCN3610: All versions

WCN3620: All versions

WCN3910: All versions

WCN3950: All versions

WCN3988: All versions

WCN3991: All versions

WCN3998: All versions

WSA8830: All versions

WSA8835: All versions

External links
https://www.qualcomm.com/company/product-security/bulletins/april-2022-bulletin

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

Latest bulletins with this vulnerability

Multiple vulnerabilities in Google Android

Multiple vulnerabilities in Qualcomm chipsets