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CVE-2019-18397

A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of...

7.8 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.18%Down 2.7 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.8

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.

Record
CVE-2019-18397
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-120
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2019-18397
Updated
2026-11-02
EUVDEUVD-2019-8179 No score

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.

Record
EUVD-2019-8179
Updated
2026-11-03
GitHub AdvisoriesGHSA-fcm8-q275-jqv2 No score

A buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of...

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.

Record
GHSA-fcm8-q275-jqv2
Updated
2026-11-02
OSVALPINE-CVE-2019-18397 7.8

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.

Record
ALPINE-CVE-2019-18397
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVBELL-CVE-2019-18397 7.8

CVE-2019-18397 does not affect BellSoft software

Record
BELL-CVE-2019-18397
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 12 moreShow less
OSV 7.8

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.

Record
CVE-2019-18397
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2019-18397 7.8

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.

Record
DEBIAN-CVE-2019-18397
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVJLSEC-2025-169 7.8

A buffer overflow in the `fribidi_get_par_embedding_levels_ex()` function in `lib/fribidi-bidi.c` of...

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.

Record
JLSEC-2025-169
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Updated
2026-11-02
OSVRHSA-2019:4326 7.8

Red Hat Security Advisory: fribidi security update

Record
RHSA-2019:4326
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2019:4361 7.8

Red Hat Security Advisory: fribidi security update

Record
RHSA-2019:4361
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:0291 7.8

Red Hat Security Advisory: fribidi security update

Record
RHSA-2020:0291
CVSS 3.0
7.8 HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2019-18397 7.8

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.

Record
UBUNTU-CVE-2019-18397
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2019-0325 No score

Updated fribidi packages fix security vulnerability

Updated fribidi packages fix security vulnerability:

A stack buffer overflow in the fribidi_get_par_embedding_levels_ex() function in lib/fribidi-bidi.c of GNU FriBidi 1.0.0 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 (CVE-2019-18397).

Record
MGASA-2019-0325
Updated
2026-11-02
OSVopenSUSE-SU-2021:0763-1 No score

Security update for fribidi

This update for fribidi fixes the following issues:

Security issues fixed:

  • CVE-2019-18397: Avoid buffer overflow. (bsc#1156260)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Record
openSUSE-SU-2021:0763-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:1655-1 No score

Security update for fribidi

This update for fribidi fixes the following issues:

Security issues fixed:

  • CVE-2019-18397: Avoid buffer overflow. (bsc#1156260)
Record
openSUSE-SU-2021:1655-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10772-1 No score

fribidi-1.0.10-2.1 on GA media

These are all security issues fixed in the fribidi-1.0.10-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10772-1
Updated
2026-11-02
OSVSUSE-SU-2021:1655-1 No score

Security update for fribidi

This update for fribidi fixes the following issues:

Security issues fixed:

  • CVE-2019-18397: Avoid buffer overflow. (bsc#1156260)
Record
SUSE-SU-2021:1655-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
fribidi
Alpine:v3.10
 1.0.0 up to 1.0.5-r2
1.0.5-r2
fribidi
Alpine:v3.11
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.12
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.13
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.14
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.15
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.16
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.17
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.18
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.19
 1.0.0 up to 1.0.7-r1
1.0.7-r1
Show 41 moreShow less
Affected packages
PackageAffectedFixed
fribidi
Alpine:v3.20
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.21
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.22
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.23
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.24
 1.0.0 up to 1.0.7-r1
1.0.7-r1
fribidi
Alpine:v3.8
 1.0.0 up to 1.0.2-r1
1.0.2-r1
fribidi
Alpine:v3.9
 1.0.0 up to 1.0.5-r1
1.0.5-r1
fribidi
Debian:12
 before 1.0.7-1.1
1.0.7-1.1
fribidi
Debian:13
 before 1.0.7-1.1
1.0.7-1.1
fribidi
Debian:14
 before 1.0.7-1.1
1.0.7-1.1
fribidi
Debian:10
 before 1.0.5-3.1+deb10u1, plus listed versions
1.0.5-3.1
1.0.5-3.1+deb10u1
FriBidi_jll
Julia
 before 1.0.10+0
1.0.10+0
fribidi
Mageia:7
 before 1.0.5-2.1.mga7
1.0.5-2.1.mga7
fribidi
Red Hat:enterprise_linux:7::client
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-devel
Red Hat:enterprise_linux:7::client
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi
Red Hat:enterprise_linux:7::computenode
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-debuginfo
Red Hat:enterprise_linux:7::computenode
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-devel
Red Hat:enterprise_linux:7::computenode
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi
Red Hat:enterprise_linux:7::server
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-devel
Red Hat:enterprise_linux:7::server
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi
Red Hat:enterprise_linux:7::workstation
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi-devel
Red Hat:enterprise_linux:7::workstation
 before 0:1.0.2-1.el7_7.1
0:1.0.2-1.el7_7.1
fribidi
Red Hat:enterprise_linux:8::appstream
 before 0:1.0.4-7.el8_1
0:1.0.4-7.el8_1
fribidi-debuginfo
Red Hat:enterprise_linux:8::appstream
 before 0:1.0.4-7.el8_1
0:1.0.4-7.el8_1
fribidi-debugsource
Red Hat:enterprise_linux:8::appstream
 before 0:1.0.4-7.el8_1
0:1.0.4-7.el8_1
fribidi-devel
Red Hat:enterprise_linux:8::appstream
 before 0:1.0.4-7.el8_1
0:1.0.4-7.el8_1
fribidi
Red Hat:rhel_e4s:8.0::appstream
 before 0:1.0.4-6.el8_0.1
0:1.0.4-6.el8_0.1
fribidi-debuginfo
Red Hat:rhel_e4s:8.0::appstream
 before 0:1.0.4-6.el8_0.1
0:1.0.4-6.el8_0.1
fribidi-debugsource
Red Hat:rhel_e4s:8.0::appstream
 before 0:1.0.4-6.el8_0.1
0:1.0.4-6.el8_0.1
fribidi-devel
Red Hat:rhel_e4s:8.0::appstream
 before 0:1.0.4-6.el8_0.1
0:1.0.4-6.el8_0.1
fribidi
SUSE:Linux Enterprise Module for Basesystem 15 SP2
 before 1.0.5-3.3.1
1.0.5-3.3.1
fribidi
SUSE:Linux Enterprise Module for Basesystem 15 SP3
 before 1.0.5-3.3.1
1.0.5-3.3.1
fribidi
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
 before 1.0.5-3.3.1
1.0.5-3.3.1
fribidi
SUSE:Linux Enterprise Module for Desktop Applications 15 SP3
 before 1.0.5-3.3.1
1.0.5-3.3.1
fribidi
SUSE:Linux Enterprise Micro 5.0
 before 1.0.5-3.3.1
1.0.5-3.3.1
fribidi
openSUSE:Leap 15.2
 before 1.0.5-lp152.2.3.1
1.0.5-lp152.2.3.1
fribidi
openSUSE:Leap 15.3
 before 1.0.5-3.3.1
1.0.5-3.3.1
fribidi
openSUSE:Tumbleweed
 before 1.0.10-2.1
1.0.10-2.1

History

History
RecordedChangedSources
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-18397 is a high vulnerability (CVSS 7.8) in Gnu Fribidi, published November 7, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.18%, the 82nd percentile. Fixed in fribidi 1.0.5-r2.

References

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