BROWSER-CHROME -- Snort has detected suspicious traffic known to exploit vulnerabilities present in the Chrome browser. These rules are separate from the "browser-webkit" category; while it uses the Webkit rendering engine, there's a lot of other features to create a secondary Chrome category.
BROWSER-CHROME Google Chrome PNG in TTF parsing heap overflow attempt
This vuln looks for crafted TIFF files containing malicious PNG files that will trigger a heap overflow vulnerability in Google Chrome.
What To Look For
This rule looks for attempts to trigger a heap overflow vulnerability in Google Chrome.
No public information
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
Tactic: Initial Access
Technique: Drive-by Compromise
For reference, see the MITRE ATT&CK vulnerability types here:
Buffer Overflows occur when a memory location is filled past its expected boundaries. Computer attackers target systems without proper terminating conditions on buffers, which then write the additional information in other locations in memory, overwriting what is there. This could corrupt the data, making the system behave erratically or crash. The new information could include malicious executable code, which might be executed.
CVE Additional Information
CVE-2020-15999Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
||Ease of Access||LOW