SB2020062911 - Multiple vulnerabilities in YARA

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: N/A)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in PE module. A remote attacker can use a specially crafted PE file and execute arbitrary code on the target system.

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

2) Integer overflow (CVE-ID: N/A)

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

The vulnerability exists due to integer overflow causing missed matches on files larger than 2GB. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/VirusTotal/yara/releases/tag/v4.0.2
• https://github.com/VirusTotal/yara/pull/1287
• https://github.com/VirusTotal/yara/issues/1295