CVE-2019-18397
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,…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.18% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- gnu/fribidi · debian/debian linux
- Source
- cve@mitre.org
References
- https://access.redhat.com/errata/RHSA-2019:4326
- https://access.redhat.com/errata/RHSA-2019:4361
- https://access.redhat.com/errata/RHSA-2020:0291
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944327Issue Tracking, Third Party Advisory
- https://github.com/fribidi/fribidi/commit/034c6e9a1d296286305f4cfd1e0072b879f52568Patch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFS3N6KKXPI6ATDNEUFRSLX7R6BOBNIP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5UJRTG32FDNI7T637Q6PZYL3UCRR5HR/
- https://marc.info/?l=oss-security&m=157322128105807&w=2Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2019-18397Third Party Advisory
- https://security.gentoo.org/glsa/202003-41
- https://access.redhat.com/errata/RHSA-2019:4326
- https://access.redhat.com/errata/RHSA-2019:4361
- https://access.redhat.com/errata/RHSA-2020:0291
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944327Issue Tracking, Third Party Advisory
- https://github.com/fribidi/fribidi/commit/034c6e9a1d296286305f4cfd1e0072b879f52568Patch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFS3N6KKXPI6ATDNEUFRSLX7R6BOBNIP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5UJRTG32FDNI7T637Q6PZYL3UCRR5HR/
- https://marc.info/?l=oss-security&m=157322128105807&w=2Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2019-18397Third Party Advisory
- https://security.gentoo.org/glsa/202003-41
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.