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What is Bash Shellshock detection?
In layman’s terms, Shellshock is a vulnerability that allows systems containing a vulnerable version of Bash to be exploited to execute commands with higher privileges. This allows attackers to potentially take over that system. Threat actors exploiting the vulnerability can issue commands remotely on the target host.
What is Shellshock in Linux?
Shellshock is a serious security bug in Bash, a “shell” commonly used in computers running Linux, UNIX and OS X. Shellshock could allow an attacker to execute malicious commands across the Internet on remote computers. Many web-facing servers run Linux and use Bash, so it is a widespread problem that needs fixing.
What is the meaning of Shellshock?
: very confused, upset, or exhausted because of something that has happened : very shocked. See the full definition for shell-shocked in the English Language Learners Dictionary. shell-shocked.
What were the symptoms of shellshock?
The term “shell shock” was coined by the soldiers themselves. Symptoms included fatigue, tremor, confusion, nightmares and impaired sight and hearing. It was often diagnosed when a soldier was unable to function and no obvious cause could be identified.
How was shellshock treated?
Shell shock victims found themselves at the mercy of the armed forces’ medical officers. The “lucky” ones were treated with a variety of “cures” including hypnosis, massage, rest and dietary treatments.
Is shell shock a mental illness?
Shell shock is a term coined in World War I by British psychologist Charles Samuel Myers to describe the type of post traumatic stress disorder many soldiers were afflicted with during the war (before PTSD was termed)….
| Shell shock | |
|---|---|
| Specialty | Psychiatry |
Why is it important to know about Shellshock Bash?
The potential is enormous – “getting shell” on a box has always been a major win for an attacker because of the control it offers them over the target environment. Access to internal data, reconfiguration of environments, publication of their own malicious code etc. It’s almost limitless and it’s also readily automatable.
How is Shellshock a privilege escalation vulnerability in Bash?
Shellshock is a privilege escalation vulnerability that offers a way for users of a system to execute commands that should be unavailable to them. This happens through Bash’s “function export” feature, whereby command scripts created in one running instance of Bash can be shared with subordinate instances. [17]
How does the Shellshock vulnerability affect the web server?
The Shellshock Bash vulnerability allows an attacker to send operating system commands to the web server operating system, thus allowing the attacker to take over the server.
How are Shellshock commands injected into a server?
Most of the Shellshock commands are being injected using the HTTP User-Agent and Referer headers, but attackers are also using GET and POST arguments and other random HTTP headers. To extract private information, attackers are using a couple of techniques.