Vulnerability identifier: #VU39300
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-416
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
YARA
Server applications /
Server solutions for antivurus protection
Vendor: VirusTotal
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing a crafted rule that is mishandled in the yr_parser_lookup_loop_variable function. A remote attackers can cause a denial of service (use-after-free and application crash).
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
YARA: 3.5.0
External links
http://www.securityfocus.com/bid/98078
http://github.com/VirusTotal/yara/commit/890c3f850293176c0e996a602ffa88b315f4e98f
http://github.com/VirusTotal/yara/issues/575
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.