fribidi: buffer overflow in fribidi_get_par_embedding_levels_ex() in lib/fribidi-bidi.c leading to denial of service and possible code execution
Published Nov 13, 2019
7.8
HIGHCVSS 3.1
EPSS 2.18%
Description
A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU FriBidi through 1.0.7 allows an attacker to cause a denial of service or possibly execute arbitrary code by delivering crafted text content to a user, when this content is then rendered by an application that uses FriBidi for text layout calculations. Examples include any GNOME or GTK+ based application that uses Pango for text layout, as this internally uses FriBidi for bidirectional text layout. For example, the attacker can construct a crafted text file to be opened in GEdit, or a crafted IRC message to be viewed in HexChat.
Affected products
No data.
Configuration 2
- 10.0
Configuration 3
- 8.0
- 9.0
- 10.0
No data.
Red Hat Enterprise Linux 7
fribidi-0:1.0.2-1.el7_7.1
Fixed · RHSA-2019:4326
Red Hat Enterprise Linux 8
fribidi-0:1.0.4-7.el8_1
Fixed · RHSA-2019:4361
Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions
fribidi-0:1.0.4-6.el8_0.1
Fixed · RHSA-2020:0291
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | fribidi-0:1.0.2-1.el7_7.1 | Fixed | RHSA-2019:4326 |
| Red Hat Enterprise Linux 8 | fribidi-0:1.0.4-7.el8_1 | Fixed | RHSA-2019:4361 |
| Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions | fribidi-0:1.0.4-6.el8_0.1 | Fixed | RHSA-2020:0291 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.18% (0.02182) | 81.73th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.18% (0.02182) | 79.95th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.41% (0.00413) | 59.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.29% (0.00294) | 70.05th | v3 (v2023.03.01) |
| Oct 20, 2023 | 0.21% (0.00207) | 58.37th | v3 (v2023.03.01) |
| Sep 2, 2023 | 0.18% (0.00181) | 54.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00173) | 52.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.27% (0.02273) | 81.37th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.27% (0.02273) | 79.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.92% (0.05925) | 77.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 18.65% (0.18651) | 93.65th | v1 |
| Jan 6, 2022 | 18.65% (0.18651) | 93.58th | v1 |
| Sep 1, 2021 | 4.86% (0.04861) | 87.48th | v1 |
| Apr 14, 2021 | 4.86% (0.04861) | 0.00th | v1 |
References (14)
- https://access.redhat.com/errata/RHSA-2019:4326 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:4361 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2020:0291 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2019-18397 Vendor Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944327 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1768750 Issue Tracking
- https://github.com/fribidi/fribidi/commit/034c6e9a1d296286305f4cfd1e0072b879f52568 x_refsource_MISCPatch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFS3N6KKXPI6ATDNEUFRSLX7R6BOBNIP/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5UJRTG32FDNI7T637Q6PZYL3UCRR5HR/ vendor-advisoryx_refsource_FEDORA
- https://marc.info/?l=oss-security&m=157322128105807&w=2 x_refsource_MISCThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-18397
- https://security-tracker.debian.org/tracker/CVE-2019-18397 x_refsource_MISCThird Party Advisory
- https://security.gentoo.org/glsa/202003-41 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2019-18397
Change history (0)
No recorded changes yet.