Vulnerability identifier: #VU11136
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
ClamAV
Client/Desktop applications /
Antivirus software/Personal firewalls
Vendor: ClamAV
Description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in the xar_hash_check() function due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted XAR file, trick the victim into opening it, trigger out-of-bounds heap memory read and cause the service to crash.
Mitigation
Install update from vendor's website.
Vulnerable software versions
ClamAV: 0.97.0 - 0.97.6, 0.98.0 - 0.98.7, 0.99.0 - 0.99.3
External links
http://github.com/Cisco-Talos/clamav-devel/commit/d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6
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.