Remote code execution in 7-Zip

1) Memory corruption

EUVDB-ID: #VU12359

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-10115

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error when handling solid compression. A remote attacker can create a specially crafted RAR archive, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update to version 18.05.

Vulnerable software versions

7-Zip: 9.04 beta - 18.03

CPE2.3

• cpe:2.3:a:7-zip_org:7-zip:9.04:beta:*:*:*:*:*:*
• cpe:2.3:a:7-zip_org:7-zip:9.04:*:*:*:*:*:*:*
• cpe:2.3:a:7-zip_org:7-zip:9.06:beta:*:*:*:*:*:*

External links

https://landave.io/2018/05/7-zip-from-uninitialized-memory-to-remote-code-execution/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

Is there known malware, which exploits this vulnerability?

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