Buffer overflow in Qualcomm products - CVE-2020-11284

Vulnerability identifier: #VU52809

CSH Severity: Medium

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

CVE-ID: CVE-2020-11284

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
AQT1000
AR8035
PM3003A
PM4125
PM4250
PM6125
PM6150
PM6150A
PM6150L
PM6350
PM640A
PM640L
PM640P
PM7250B
PM8004
PM8005
PM8008
PM8009
PM8150A
PM8150B
PM8150C
PM8150L
PM8250
PM8350
PM855
PM855B
PM855L
PM855P
PM8998
PMD9655
PMI632
PMI8998
PMK8002
PMK8003
PMM8195AU
PMM855AU
PMR525
PMX24
PMX55
QAT3522
QAT3550
QBT1500
QBT2000
QCA6390
QCA6391
QCA6420
QCA6421
QCA6426
QCA6430
QCA6431
QCA6436
QCA6595
QCA9984
QCM2290
QCM4290
QCS2290
QCS4290
QET4101
QET5100
QET6100
QET6105
QFS2530
QFS2580
QPA4360
QPA5460
QPA6560
QSW8574
QTC410S
QTC800H
QTC800S
QTC801S
QTM525
SA8195P
SD8C
SD8CX
SD460
SD480
SD662
SD8655G
SD870
SD8885G
SDM830
SDR425
SDR660
SDR660G
SDR735
SDR735G
SDR8150
SDR8250
SDR865
SDX55M
SDXR25G
SM4125
SMB1351
SMB1354
SMB1355
SMB1390
SMB1396
SMR525
SMR526
SMR545
SMR546
WCD9340
WCD9341
WCD9360
WCD9370
WCD9375
WCD9380
WCD9385
WCN3910
WCN3950
WCN3980
WCN3988
WCN3990
WCN3991
WCN3998
WCN3999
WGR7640
WHS9410
WSA8810
WSA8815
WTR2965
WTR3925
WTR5975
QCA6574AU
QCS405
SA6155P
SD675
SD855
SDX24
SDX55

Software vendor:
Qualcomm

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in QTEE. Locked memory can be unlocked and modified by non secure boot loader through improper system call sequence making the memory region untrusted source of input for secure boot loader.

Install updates from vendor's website.

• https://www.qualcomm.com/company/product-security/bulletins/may-2021-bulletin