SB20240819162 - Multiple vulnerabilities in Avast Cleanup Premium

Description

This security bulletin contains information about 3 vulnerabilities.

1) Link following (CVE-ID: CVE-2024-7229)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: 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:Clear

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

The vulnerability exists due to a link following issue within the Avast Cleanup Service. A local user can create a symbolic link, abuse the service to delete a file and gain elevated privileges on the system.

2) Link following (CVE-ID: CVE-2024-7230)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: 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:Clear

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

The vulnerability exists due to a link following issue within the Avast Cleanup Service. A local user can create a symbolic link, abuse the service to delete a file and gain elevated privileges on the system.

3) Link following (CVE-ID: CVE-2024-7231)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: 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:Clear

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

The vulnerability exists due to a link following issue within the Avast Cleanup Service. A local user can create a symbolic link, abuse the service to delete a file and gain elevated privileges on the system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://www.zerodayinitiative.com/advisories/ZDI-24-1002/
• https://www.zerodayinitiative.com/advisories/ZDI-24-1000/
• https://www.zerodayinitiative.com/advisories/ZDI-24-1001/