Vulnerability identifier: #VU12046

Vulnerability risk: Low

CVSSv3.1: 4.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:U]

CVE-ID: CVE-2018-10172

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
7-Zip
Client/Desktop applications / Software for archiving

Vendor: 7-zip.org

Description
The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists due to improper security restrictions when using the large memory pages option. When using this option, the SeLockMemoryPrivilege privilege is added to the current user account using the LsaAddAccountRights function, which allows other applications on the system access to that privilege. A local attacker can execute an application on the system, which can run with SeLockMemoryPrivilege privileges, and bypass access restrictions.

Mitigation
Install update from vendor's website.

Vulnerable software versions

7-Zip: 15.05 - 18.01

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External links
http://sourceforge.net/p/sevenzip/discussion/45797/thread/e730c709/?limit=25&page=1#b240

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.