CVE-2019-18397
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.
How to fix
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W5UJRTG32FDNI7T637Q6PZYL3UCRR5HR/
- access.redhat.com/errata/RHSA-2019:4326
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFS3N6KKXPI6ATDNEUFRSLX7R6BOBNIP/
- access.redhat.com/errata/RHSA-2019:4361
- access.redhat.com/errata/RHSA-2020:0291
- security.gentoo.org/glsa/202003-41
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu fribidi | 1.0.0 ≤ v ≤ 1.0.7 | — |
| debian debian_linux | 10.0, 8.0, 9.0 | — |
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Attack Surface Management
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