MEDIUM
discount: heap-based buffer over-read via a crafted file
Published Jun 15, 2018
5.5
MEDIUMCVSS 3.0
EPSS 1.85%
Description
The quoteblock function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file.
Affected products
No data.
Configuration 1
- 2.2.3
Configuration 2
OR
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 8
discount
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | discount | Will not fix | n/a |
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.
5.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
1 other source (Red Hat) ▾
4.4 MEDIUM Red Hat
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact Low
Availability Impact Low
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.85% 0.01849
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01849
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 (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.85% (0.01849) | 78.32th | v5 (v2026.06.15) |
| Sep 22, 2026 | 1.79% (0.01785) | 77.33th | v5 (v2026.06.15) |
| Sep 21, 2026 | 3.14% (0.03138) | 87.31th | v5 (v2026.06.15) |
| Sep 6, 2026 | 1.79% (0.01785) | 76.83th | v5 (v2026.06.15) |
| Sep 5, 2026 | 3.14% (0.03138) | 87.04th | v5 (v2026.06.15) |
| Aug 30, 2026 | 1.79% (0.01785) | 76.72th | v5 (v2026.06.15) |
| Aug 28, 2026 | 3.14% (0.03138) | 86.96th | v5 (v2026.06.15) |
| Aug 24, 2026 | 1.79% (0.01785) | 76.59th | v5 (v2026.06.15) |
| Aug 23, 2026 | 3.14% (0.03138) | 86.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.79% (0.01785) | 75.36th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.28% (0.00284) | 49.73th | v4 (v2025.03.14) |
| Dec 17, 2024 | 0.27% (0.00273) | 67.54th | v3 (v2023.03.01) |
| Jun 30, 2024 | 0.29% (0.00292) | 69.34th | v3 (v2023.03.01) |
| May 25, 2024 | 0.24% (0.00244) | 64.39th | v3 (v2023.03.01) |
| Apr 24, 2024 | 0.21% (0.00206) | 58.26th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.17% (0.00171) | 53.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00144) | 48.46th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.30% (0.01300) | 31.12th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.30% (0.01300) | 0.00th | v1 |
Weaknesses (1)
References (7)
- https://access.redhat.com/security/cve/CVE-2018-12495 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1592866 Issue Tracking
- https://github.com/Orc/discount/issues/189#issuecomment-397541501 x_refsource_MISCExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00009.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-12495
- https://www.cve.org/CVERecord?id=CVE-2018-12495
- https://www.debian.org/security/2018/dsa-4293 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-12495 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1592866 | Issue Tracking | |
| https://github.com/Orc/discount/issues/189#issuecomment-397541501 | x_refsource_MISCExploitThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/09/msg00009.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-12495 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-12495 | ||
| https://www.debian.org/security/2018/dsa-4293 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 15, 2018
Updated Aug 5, 2024
Reserved Jun 15, 2018
Link CVE-2018-12495
CISA Vulnrichment
Updated n/a