CVE-2019-1010238 : Security Advisory and Response

Gnome Pango versions 1.42 and onwards have a vulnerability that allows for code execution through a heap-based buffer overflow.

Understanding CVE-2019-1010238

Gnome Pango 1.42 and later versions are affected by a Buffer Overflow vulnerability.

What is CVE-2019-1010238?

Gnome Pango versions 1.42 and later are susceptible to a Buffer Overflow vulnerability. This flaw enables malicious actors to execute arbitrary code by exploiting a heap-based buffer overflow.

The Impact of CVE-2019-1010238

The vulnerability in Gnome Pango versions 1.42 and later poses a significant risk as it allows attackers to achieve code execution through a specific function within the software.

Technical Details of CVE-2019-1010238

Gnome Pango 1.42 and later versions are affected by a Buffer Overflow vulnerability.

Vulnerability Description

The vulnerability arises in the function named "pango_log2vis_get_embedding_levels" due to the mishandling of "nchars" assignment and loop conditions, leading to a heap-based buffer overflow.

Affected Systems and Versions

Product: Pango
Vendor: Gnome
Versions: 1.42 and later

Exploitation Mechanism

The attack vector involves passing invalid utf-8 strings to functions like "pango_itemize," triggering the vulnerability.

Mitigation and Prevention

To address CVE-2019-1010238, follow these steps:

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor vendor advisories and security mailing lists for updates.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflows.
Conduct regular security assessments and code reviews.
Stay informed about security best practices and emerging threats.

Patching and Updates

Regularly update the Gnome Pango software to the latest patched versions.