CVE-2018-0202 Information

Description

clamscan in ClamAV before 0.99.4 contains a vulnerability that could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation checking mechanisms when handling Portable Document Format (.pdf) files sent to an affected device. An unauthenticated remote attacker could exploit this vulnerability by sending a crafted .pdf file to an affected device. This action could cause an out-of-bounds read when ClamAV scans the malicious file allowing the attacker to cause a DoS condition. This concerns pdf_parse_array and pdf_parse_string in libclamav/pdfng.c. Cisco Bug IDs: CSCvh91380 CSCvh91400.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

https://bugzilla.clamav.net/show_bug.cgi?id=11973 https://bugzilla.clamav.net/show_bug.cgi?id=11980 https://lists.debian.org/debian-lts-announce/2018/03/msg00011.html https://security.gentoo.org/glsa/201804-16 https://usn.ubuntu.com/3592-1/ https://usn.ubuntu.com/3592-2/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5