ClamAV version version 0.99.3 contains a Out of bounds heap memory read vulnerability in XAR parser, function xar_hash_check() that can result in Leaking of memory, may help in developing exploit chains.
Published Mar 13, 2018
5.5
MEDIUMCVSS 3.0
EPSS 1.61%
Description
ClamAV version version 0.99.3 contains a Out of bounds heap memory read vulnerability in XAR parser, function xar_hash_check() that can result in Leaking of memory, may help in developing exploit chains.. This attack appear to be exploitable via The victim must scan a crafted XAR file. This vulnerability appears to have been fixed in after commit d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6.
Affected products
No data.
Configuration 2
- 7.0
Configuration 3
- 12.04
- 14.04
- 16.04
- 17.10
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.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.61% (0.01613) | 75.13th | v5 (v2026.06.15) |
| Sep 22, 2026 | 1.61% (0.01613) | 74.91th | v5 (v2026.06.15) |
| Sep 21, 2026 | 2.74% (0.02743) | 85.45th | v5 (v2026.06.15) |
| Sep 6, 2026 | 1.61% (0.01613) | 74.37th | v5 (v2026.06.15) |
| Sep 5, 2026 | 2.74% (0.02743) | 85.13th | v5 (v2026.06.15) |
| Aug 30, 2026 | 1.61% (0.01613) | 74.25th | v5 (v2026.06.15) |
| Aug 28, 2026 | 2.74% (0.02743) | 85.04th | v5 (v2026.06.15) |
| Aug 24, 2026 | 1.61% (0.01613) | 74.10th | v5 (v2026.06.15) |
| Aug 23, 2026 | 2.74% (0.02743) | 84.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.67% (0.01670) | 73.69th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.76% (0.00755) | 71.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.16% (0.00161) | 54.01th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.16% (0.00161) | 52.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00161) | 50.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.45% (0.01454) | 32.67th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
References (6)
- http://www.openwall.com/lists/oss-security/2017/09/29/4 mailing-listx_refsource_MLISTIssue TrackingMailing ListPatchThird Party Advisory
- https://github.com/Cisco-Talos/clamav-devel/commit/d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6 x_refsource_MISCPatch
- 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 |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2017/09/29/4 | mailing-listx_refsource_MLISTIssue TrackingMailing ListPatchThird Party Advisory | |
| https://github.com/Cisco-Talos/clamav-devel/commit/d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6 | x_refsource_MISCPatch | |
| 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.