SB2019111808 - Multiple vulnerabilities in several Symantec Endpoint Protection products

Description

This security bulletin contains information about 5 vulnerabilities.

1) Protection Mechanism Failure (CVE-ID: CVE-2019-12758)

CWE-ID: CWE-693 - Protection Mechanism Failure

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

The vulnerability allows a local user to bypass certain security restrictions.

The vulnerability exists due to the application does not check for digital signatures when loading the "c:\Windows\SysWOW64\wbem\DSPARSE.dll" file that is not present on the system by default. A local administrator can place a malicious "DSPARSE.dll" and gain elevated privileges on the system.

2) Improper Authentication (CVE-ID: CVE-2019-12756)

CWE-ID: CWE-287 - Improper Authentication

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

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to a password protection bypass. A local administrator can bypass the secondary layer of password protection and gain unauthorized access to the application.

3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-18372)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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 improper permission checks. A local user can compromise the software application and gain elevated privileges on the system.

4) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-12759)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

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 improper permission checks. A local user can compromise the software application and gain elevated privileges on the system.

5) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-12757)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/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 improper permission checks. A local user can compromise the software application and gain elevated privileges on the system.

Remediation

Install update from vendor's website.

References

• https://support.symantec.com/us/en/article.SYMSA1488.html
• https://safebreach.com/Post/Symantec-Endpoint-Protection-Self-Defense-Bypass-and-Potential-Usages-CVE-2019-12758