BROWSER-OTHER -- Snort has detected suspicious traffic known to exploit vulnerabilities present in an Internet browser other than Firefox, Internet Explorer, or Chrome, or which is present in multiple browsers. This rule should be enabled for systems that use any mainstream browser, to offer complete coverage. (ie, If a vulnerability affects both Chrome and Firefox, but is covered by a rule under the Chrome category, Firefox users might have Chrome coverage turned off and miss the vulnerability.)
BROWSER-OTHER Opera GIF parsing buffer underflow attempt
This event is generated when an attacker attempts to exploit a buffer overflow vulnerability in Opera.
Attempted User Privilege Gain
Rule checks for attempts to exploit a buffer overflow vulnerability in Opera.
Ease of Attack:
What To Look For
No public information
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
For reference, see the MITRE ATT&CK vulnerability types here:
CVE Additional Information
CVE-2012-6470Opera before 12.12 does not properly allocate memory for GIF images, which allows remote attackers to execute arbitrary code or cause a denial of service (memory overwrite) via a malformed image.
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