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 Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-clamav | Apr 13, 2018 | Mar 27, 2018 | |
| Amazon_linux | — | amazon-linux-upgrade-clamav | Mar 25, 2018 | Mar 21, 2018 |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Mar 27, 2018 | |
| Debian | debian-upgrade-clamav | Feb 19, 2019 | Mar 27, 2018 | |
| Gentoo Linux | gentoo-linux-upgrade-app-antivirus-clamav | Apr 23, 2018 | Mar 27, 2018 | |
| Suse | — | suse-upgrade-clamavsuse-upgrade-clamav-develsuse-upgrade-libclamav7suse-upgrade-libclamav9suse-upgrade-libclammspack0suse-upgrade-libfreshclam2 | Mar 27, 2018 | Mar 21, 2018 |
| Ubuntu | ubuntu-upgrade-clamav | Apr 25, 2018 | Mar 8, 2018 |
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