Vulnerability identifier: #VU32027

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1788

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
ClamAV
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: ClamAV

Description

The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.

A vulnerability in the Object Linking & Embedding (OLE2) file scanning functionality of Clam AntiVirus (ClamAV) Software versions 0.101.1 and prior could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to a lack of proper input and validation checking mechanisms for OLE2 files sent an affected device. An attacker could exploit this vulnerability by sending malformed OLE2 files to the device running an affected version ClamAV Software. An exploit could allow the attacker to cause an out-of-bounds write condition, resulting in a crash that could result in a denial of service condition on an affected device.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ClamAV: 0.101.0 - 0.101.1

---

External links
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00062.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00064.html
http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12166
http://lists.debian.org/debian-lts-announce/2019/04/msg00019.html
http://security.gentoo.org/glsa/201904-12

---

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.