kdelibs: Heap-based buffer overflow when parsing location of a font face source
Published Feb 8, 2020
8.8
HIGHCVSS 3.1
EPSS 11.66%
Description
The CSS parser (khtml/css/cssparser.cpp) in Konqueror in KDE 4.7.3 allows remote attackers to cause a denial of service (crash) and possibly read memory via a crafted font face source, related to "type confusion."
Affected products
-
- Version 4.7.3StatusaffectedConstraints-
- Version
Configuration 2
- 6.0
- 6.0
- 6.3
- 6.0
No data.
Red Hat Enterprise Linux 6
kdelibs-6:4.3.4-14.el6_3.2
Fixed · RHSA-2012:1416
Red Hat Enterprise Linux Desktop (v. 6)
n/a
Fixed · RHSA-2012:1418
Red Hat Enterprise Linux HPC Node (v. 6)
n/a
Fixed · RHSA-2012:1418
Red Hat Enterprise Linux Server (v. 6)
n/a
Fixed · RHSA-2012:1418
Red Hat Enterprise Linux Workstation (v. 6)
n/a
Fixed · RHSA-2012:1418
Red Hat Enterprise Linux 5
kdelibs
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kdelibs-6:4.3.4-14.el6_3.2 | Fixed | RHSA-2012:1416 |
| Red Hat Enterprise Linux Desktop (v. 6) | n/a | Fixed | RHSA-2012:1418 |
| Red Hat Enterprise Linux HPC Node (v. 6) | n/a | Fixed | RHSA-2012:1418 |
| Red Hat Enterprise Linux Server (v. 6) | n/a | Fixed | RHSA-2012:1418 |
| Red Hat Enterprise Linux Workstation (v. 6) | n/a | Fixed | RHSA-2012:1418 |
| Red Hat Enterprise Linux 5 | kdelibs | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/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 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- 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 | 11.66% (0.11656) | 95.93th | v5 (v2026.06.15) |
| Jun 15, 2026 | 11.66% (0.11656) | 95.49th | v5 (v2026.06.15) |
| Apr 23, 2026 | 9.98% (0.09978) | 93.08th | v4 (v2025.03.14) |
| Feb 16, 2026 | 11.50% (0.11497) | 93.45th | v4 (v2025.03.14) |
| Nov 30, 2025 | 12.76% (0.12763) | 93.73th | v4 (v2025.03.14) |
| Mar 30, 2025 | 9.04% (0.09042) | 91.85th | v4 (v2025.03.14) |
| Mar 29, 2025 | 21.41% (0.21415) | 92.99th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.04% (0.09042) | 92.01th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.97% (0.01970) | 89.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.97% (0.01970) | 86.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.96% (0.01955) | 78.47th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.96% (0.01955) | 77.97th | v2 (v2022.01.01) |
| Feb 3, 2023 | 6.57% (0.06569) | 91.09th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.96% (0.01955) | 76.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.96% (0.01955) | 55.71th | v2 (v2022.01.01) |
References (15)
- http://archives.neohapsis.com/archives/bugtraq/2012-11/0005.html x_refsource_MISCBroken LinkThird Party Advisory
- http://em386.blogspot.com/2010/12/webkit-css-type-confusion.html x_refsource_MISCExploitThird Party Advisory
- http://quickgit.kde.org/index.php?p=kdelibs.git&a=commitdiff&h=a872c8a969a8bd3706253d6ba24088e4f07f3352 x_refsource_MISCBroken LinkVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2012-1416.html x_refsource_MISCThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2012-1418.html x_refsource_MISCThird Party Advisory
- http://secunia.com/advisories/51097 x_refsource_MISCNot ApplicableThird Party Advisory
- http://secunia.com/advisories/51145 x_refsource_MISCNot ApplicableThird Party Advisory
- http://www.nth-dimension.org.uk/pub/NDSA20121010.txt.asc x_refsource_MISCThird Party Advisory
- http://www.openwall.com/lists/oss-security/2012/10/11/11 x_refsource_MISCMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2012/10/30/6 x_refsource_MISCMailing ListThird Party Advisory
- http://www.securitytracker.com/id?1027709 x_refsource_MISCThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2012-4512 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=865779 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-4512
- https://www.cve.org/CVERecord?id=CVE-2012-4512
Change history (0)
No recorded changes yet.