FILE-OTHER -- Snort detected traffic targeting vulnerabilities in a file type that does not require enough rule coverage to have its own category.
FILE-OTHER Grub malicious grub.cfg download attempt
The rule is looking for `search` key value with value greater than 256. This `search` key (part of grub.cfg) can cause buffer overflow leading to exploitation of `BootHole` vulnerability in Grub
The rule alerts on malicious grub config file download attempt by system. This can be used to exploit BootHole vulnerability in Grub2
No public information
No known false positives
Cisco Talos Intelligence Group
No rule groups
Buffer Overflow
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-2020-10713 |
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Tactic: Execution
Technique: User Execution
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org
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