#VU62001 Double Free in MediaTek products - CVE-2021-25477
Published: April 8, 2022
Vulnerability identifier: #VU62001
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-25477
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
MT6735
MT6737
MT6739
MT6750S
MT6757
MT6757P
MT6761
MT6762
MT6762D
MT6762M
MT6763
MT6765
MT6765T
MT6767
MT6768
MT6769
MT6769T
MT6769Z
MT6771
MT6783
MT6785T
MT6833
MT6880
MT6890
MT8666
MT8667
MT8675
MT8735A
MT8735B
MT8765
MT8766
MT8768
MT8786
MT8788
MT8789
MT8791
MT6779
MT6781
MT6785
MT6853
MT6873
MT6875
MT6877
MT6883
MT6885
MT6889
MT6891
MT6893
MT8797
MT6735
MT6737
MT6739
MT6750S
MT6757
MT6757P
MT6761
MT6762
MT6762D
MT6762M
MT6763
MT6765
MT6765T
MT6767
MT6768
MT6769
MT6769T
MT6769Z
MT6771
MT6783
MT6785T
MT6833
MT6880
MT6890
MT8666
MT8667
MT8675
MT8735A
MT8735B
MT8765
MT8766
MT8768
MT8786
MT8788
MT8789
MT8791
MT6779
MT6781
MT6785
MT6853
MT6873
MT6875
MT6877
MT6883
MT6885
MT6889
MT6891
MT6893
MT8797
Software vendor:
MediaTek
MediaTek
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a double free error within the Modem LTE RRC when decoding an incorrect ASN.1 data. A remote attacker can pass specially crafted data to the system, trigger a double free error and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.