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CVE-2018-0202

5.5 · MEDIUM

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.

Published Mar 27, 2018CWE-125EPSS 2.58%

Overview

CVE-2018-0202 is a medium-severity vulnerability. It was published on March 27, 2018 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.clamav.net/show_bug.cgi?id=11973Refbugzilla.clamav.net/show_bug.cgi?id=11980Reflists.debian.org/debian-lts-announce/2018/03/msg00011.htmlRefsecurity.gentoo.org/glsa/201804-16Refusn.ubuntu.com/3592-1/Refusn.ubuntu.com/3592-2/Refbugzilla.clamav.net/show_bug.cgi?id=11973Refbugzilla.clamav.net/show_bug.cgi?id=11980Reflists.debian.org/debian-lts-announce/2018/03/msg00011.htmlRefsecurity.gentoo.org/glsa/201804-16

How CyberStrike helps

Frequently asked questions

What is CVE-2018-0202?

CVE-2018-0202 is a medium-severity vulnerability. It was published on March 27, 2018 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2018-0202?

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-0202?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-0202?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-0202 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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