#VU82793 Missing Authorization in UNISOC products - CVE-2023-42655

Vulnerability identifier: #VU82793

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-42655

CWE-ID: CWE-862

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
T760
Mobile applications / Mobile firmware & hardware
T770
Mobile applications / Mobile firmware & hardware
T820
Mobile applications / Mobile firmware & hardware
S8000
Mobile applications / Mobile firmware & hardware

Vendor: UNISOC

Description

The vulnerability allows a remote attacker to read and manipulate data.

The vulnerability exists due to a possible way to write permission usage records of an app due to a missing permission check within the sim service in Android. A remote attacker can trick the victim to open a specially crafted file and read and manipulate data.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

T760: All versions

T770: All versions

T820: All versions

S8000: All versions

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External links
https://www.unisoc.com/en_us/secy/announcementDetail/1719615756246777857

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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.