MEDIUM
libsass: heap-based buffer over-read in Sass::Prelexer::alternatives in prelexer.hpp
Published Jan 14, 2019
6.5
MEDIUMCVSS 3.1
EPSS 2.10%
Description
In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::alternatives in prelexer.hpp.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
6.5 MEDIUM NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
3.3 LOW Red Hat
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
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.
2.10% 0.02096
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02096
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.10% (0.02096) | 80.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.10% (0.02096) | 79.16th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.25% (0.00251) | 65.44th | v3 (v2023.03.01) |
| May 22, 2024 | 0.25% (0.00251) | 65.01th | v3 (v2023.03.01) |
| Jan 8, 2024 | 0.25% (0.00251) | 62.96th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.24% (0.00240) | 60.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00205) | 56.71th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.13% (0.04134) | 68.25th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.50% (0.04504) | 76.47th | v1 |
| Jan 6, 2022 | 4.50% (0.04504) | 76.26th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
Weaknesses (1)
References (8)
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html vendor-advisoryx_refsource_SUSEBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html vendor-advisoryx_refsource_SUSEBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html vendor-advisoryx_refsource_SUSEBroken Link
- https://access.redhat.com/security/cve/CVE-2019-6284 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1668921 Issue Tracking
- https://github.com/sass/libsass/issues/2816 x_refsource_MISCExploitThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-6284
- https://www.cve.org/CVERecord?id=CVE-2019-6284
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html | vendor-advisoryx_refsource_SUSEBroken Link | |
| http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html | vendor-advisoryx_refsource_SUSEBroken Link | |
| http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html | vendor-advisoryx_refsource_SUSEBroken Link | |
| https://access.redhat.com/security/cve/CVE-2019-6284 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1668921 | Issue Tracking | |
| https://github.com/sass/libsass/issues/2816 | x_refsource_MISCExploitThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-6284 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-6284 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 14, 2019
Updated Aug 4, 2024
Reserved Jan 14, 2019
Link CVE-2019-6284
CISA Vulnrichment
Updated n/a