CVE-2019-18397: Buffer Overflow
A buffer overflow in the fribidigetparembeddinglevelsex() 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.
Other sources
A stack buffer overflow in the fribidigetparembeddinglevelsex() 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. Examples include any GNOME or GTK+ based application that uses Pango for text rendering, as this internally uses FriBidi for bidirectional text layout. For example, the attacker can construct a crafted text file to be opened in GEdit, a crafted IRC message to be viewed in HexChat or a crafted email to be viewed in Evolution.
— Red Hat
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2019-18397.
What is the severity of CVE-2019-18397?
CVE-2019-18397 has a severity score of 7.8, which is considered high.
Which software is affected by CVE-2019-18397?
The software affected by CVE-2019-18397 is GNU FriBidi through versions 1.0.7.
How can an attacker exploit CVE-2019-18397?
An attacker can exploit CVE-2019-18397 by delivering crafted text content to a user, which when rendered by an application, can cause a denial of service or possibly execute arbitrary code.
Is there a fix available for CVE-2019-18397?
Yes, there are fixes available for CVE-2019-18397. The recommended versions to remediate the vulnerability are 1.0.5-3.1+deb10u1 and 1.0.7-1.1.