A bug in a popular third-party app lets users bypass the macOS login screen. The flaw allows access to any user’s password, even that of an administrator. Experts advise not using this particular software until it has been fixed or replaced by another product.,
The “login as root mac terminal” is a bug in the powerdir server that allows users to bypass macOS login screen.
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- The TCC is a security feature that helps Apple customers to manage the privacy settings of programs installed on their computers and linked devices.
- With the new TCC, Apple users will be able to provide programs complete disk access with configuration tools that automatically prohibit unwanted code execution.
- Finally, Apple was able to patch the flaw in security upgrades delivered in December of last year.
The macOS vulnerability, according to Microsoft, might be used to circumvent the company’s Transparency, Consent, and Control (TCC) technology.
On July 15, 2021, the Microsoft 365 Defender Research Team notified Apple of a vulnerability in the MacBook Pro model T5 through the Microsoft Security Vulnerability Research (MSVR).
TCC is a security technology that allows Apple customers to manage the privacy settings of programs installed on their computers and linked devices, such as cameras and microphones.
Apple has promised customers that the new TCC would only provide full disk access to programs that have been configured to restrict unauthorized code execution automatically.
Cybercriminals might deceive a user into clicking on a malicious link to acquire access to personal information held in a TCC database, according to Microsoft researchers.
According to Jonathan Bar, a key security researcher at Microsoft, “we observed that it is simple to programmatically modify a target user’s home directory and plant a false TCC database, which keeps the consent history of app requests.”
“If this vulnerability is exploited on unpatched systems, a hostile actor might possibly organize an attack based on the user’s protected personal data.”
“For example, the attacker may access the microphone to record private conversations or photos of important information shown on the user’s screen by hijacking an app running on the smartphone or installing their own malicious software.”
TCC bypasses have been reported.
Other TCC bypasses revealed since 2020 have also been addressed by Apple, including:
- Variable toxicity in the environment
- Mounts for the Time Machine
- Issue with the bundle’s ending
Furthermore, Apple patched the flaw in last month’s security upgrades, which were delivered on December 13, 2021. According to the security alert, “a malicious program may be able to overcome Privacy settings.”
Apple has improved state management to address the logic error that caused the powerdir security hole.
“We had to tweak our proof-of-concept (POC) vulnerability throughout this investigation since the first version no longer functioned on the current macOS version, Monterey,” Jonathan said.
“This demonstrates that, even as macOS and other operating systems and applications become more secure with each release, software vendors such as Apple, security researchers, and the broader security community must continue to collaborate to identify and fix vulnerabilities before attackers can exploit them.”
Shrootless is a security weakness that allows an attacker to overcome System Integrity Protection (SIP) and execute arbitrary activities, elevate privileges to root, and install rootkits on affected machines, according to Microsoft.
The company’s experts also uncovered new UpdateAgent or Vigram macOS malware versions, which have been upgraded with new evasion and persistence techniques.
In June of last year, a security researcher from Tactical Network Solutions (Redmond) discovered severe weaknesses in many NETGEAR router models. Hackers might use the holes to break inside and move around company networks.
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The “Bug in powerdir server lets users bypass macOS login screen” is a bug that has been present for a while. The bug allows users to bypass the login screen by using the powerdir command. Reference: need sudo access on macos.
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