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Red Hat: CVE-2019-18397: CVE-2019-18397 fribidi: buffer overflow in fribidi_get_par_embedding_levels_ex() in lib/fribidi-bidi.c leading to denial of service and possible code execution (Multiple Advisories)

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Red Hat: CVE-2019-18397: CVE-2019-18397 fribidi: buffer overflow in fribidi_get_par_embedding_levels_ex() in lib/fribidi-bidi.c leading to denial of service and possible code execution (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
11/13/2019
Created
12/21/2019
Added
12/20/2019
Modified
12/15/2023

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.

Solution(s)

  • redhat-upgrade-fribidi
  • redhat-upgrade-fribidi-debuginfo
  • redhat-upgrade-fribidi-debugsource
  • redhat-upgrade-fribidi-devel

References

  • CVE-2019-18397
  • RHSA-2019:4326
  • RHSA-2019:4361
  • RHSA-2020:0291

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