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, 2018
5.5
MEDIUMCVSS 3.0
EPSS 2.58%
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.
Affected products
- Vendor n/a Product ClamAV Defaultn/a
- Version ClamAVStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | ClamAV | n/a |
|
Configuration 2
- 12.04
- 14.04
- 16.04
- 17.10
Configuration 3
- 7.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Dec 2, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (34 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.58% (0.02581) | 84.67th | v5 (v2026.06.15) |
| Sep 22, 2026 | 2.58% (0.02581) | 84.54th | v5 (v2026.06.15) |
| Sep 21, 2026 | 5.12% (0.05119) | 92.03th | v5 (v2026.06.15) |
| Sep 6, 2026 | 2.58% (0.02581) | 84.20th | v5 (v2026.06.15) |
| Sep 5, 2026 | 5.12% (0.05119) | 91.86th | v5 (v2026.06.15) |
| Aug 30, 2026 | 2.63% (0.02630) | 84.43th | v5 (v2026.06.15) |
| Aug 28, 2026 | 5.15% (0.05153) | 91.86th | v5 (v2026.06.15) |
| Aug 24, 2026 | 2.63% (0.02630) | 84.34th | v5 (v2026.06.15) |
| Aug 23, 2026 | 5.15% (0.05153) | 91.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.67% (0.02672) | 83.75th | v5 (v2026.06.15) |
| Mar 15, 2026 | 2.18% (0.02179) | 84.14th | v4 (v2025.03.14) |
| Jan 23, 2026 | 3.79% (0.03787) | 87.76th | v4 (v2025.03.14) |
| Jan 14, 2026 | 4.84% (0.04839) | 89.20th | v4 (v2025.03.14) |
| Nov 21, 2025 | 2.65% (0.02654) | 85.26th | v4 (v2025.03.14) |
| Nov 18, 2025 | 0.80% (0.00800) | 71.94th | v4 (v2025.03.14) |
| May 4, 2025 | 2.87% (0.02874) | 85.53th | v4 (v2025.03.14) |
| May 2, 2025 | 5.23% (0.05229) | 89.45th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.03% (0.03034) | 85.45th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.90% (0.12900) | 90.05th | v4 (v2025.03.14) |
| Mar 28, 2025 | 3.03% (0.03034) | 85.46th | v4 (v2025.03.14) |
| Mar 27, 2025 | 12.90% (0.12900) | 93.05th | v4 (v2025.03.14) |
| Mar 20, 2025 | 3.03% (0.03034) | 85.54th | v4 (v2025.03.14) |
| Mar 19, 2025 | 12.90% (0.12900) | 93.19th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.03% (0.03034) | 85.74th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.51% (0.00509) | 77.33th | v3 (v2023.03.01) |
| Mar 23, 2024 | 0.49% (0.00490) | 75.62th | v3 (v2023.03.01) |
| Mar 6, 2024 | 0.79% (0.00791) | 81.10th | v3 (v2023.03.01) |
| Feb 4, 2024 | 0.56% (0.00559) | 75.30th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.46% (0.00465) | 72.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00334) | 66.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.26% (0.02262) | 50.78th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.26% (0.02262) | 0.00th | v1 |
References (6)
- https://bugzilla.clamav.net/show_bug.cgi?id=11973 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://bugzilla.clamav.net/show_bug.cgi?id=11980 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00011.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/201804-16 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/3592-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3592-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.clamav.net/show_bug.cgi?id=11973 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://bugzilla.clamav.net/show_bug.cgi?id=11980 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/03/msg00011.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://security.gentoo.org/glsa/201804-16 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://usn.ubuntu.com/3592-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/3592-2/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory |
Change history (0)
No recorded changes yet.