The LogicHub Security Roundup: April 2022 Edition
Hello, and welcome to the latest edition of the LogicHub Monthly Update! Each month we’ll be covering a broad view of this past month’s threats, a series of informative use cases seen this month by our teams, and a series of recommended articles, podcasts, and other useful resources.
Apple Buffer Overflow Zero Days
WHAT DOES IT DO?
A pair of zero days in iOS, iPadOS, and macOS Monterey were actively being exploited in the wild prior to patch. The issues were out-of-bound write issues in an Intel Graphics driver and the Apple AVD media decoder. Out-of-bounds write issues allow for the unintentional ability to write to memory, which can then be leveraged by an attacker for remote code execution.
Buffer overflows and out-of-bounds writes result in remote code execution, which can cause a downpour of issues with all aspects of the CIA triad.
Apple urges all of those affected to patch immediately with the newly available security updates.
WHAT DOES IT DO?
This one is highly unusual, but it means that NodeIPC is no longer recommended for use. Package node-ipc from 10.1.1 and before 10.1.3 includes malicious code that targets Russian and Belarussian IPs, overwriting files using a ‘heart emoji’ write pattern. This vulnerability means that anyone using the module in their development may cause issues with anyone using an IP from that region.
Full system wipes are nothing to treat lightly, but this code has a significant problem. If a user is using a VPN, they may also be seen as a targeted user despite not living within the region.
Many are currently recommending that node-ipc not be used at all. This is difficult, as node-ipc is a common dependency. Users can add overrides to past versions of node-ipc in current code, but as node-ipc is a transitive dependency this doesn’t always fix the problem. Use at your own risk.
OpenSSL Palo Alto DoS
WHAT DOES IT DO?
A vulnerability in a version of the OpenSSL library used by Palo Alto’s PAN-OS, GlobalProtect, and Cortex XDR allows for denial of service (DoS) attacks. Though this flaw has been patched in the OpenSSL library, this older version being used by Palo Alto has yet to be patched. A function used to calculate modular square root contains a bug causing it to loop infinitely when a certificate or public key is required.
A DoS attack severely affects availability of resources, leading to problems with uptime and possible issues with connected applications.
Palo Alto has recommended that users with the Threat Prevention service enable Threat IDs 92409 and 92411 to block incoming attacks. Though this has yet to be seen in the wild, a proof-of-concept does exist.
CUSTOMER USE CASE
Threat Hunting in Github
- Github is frequently a repository for confidential intellectual property (IP). An attacker accessing the right github repository can steal critical proprietary information about product roadmap, unresolved bugs, product vulnerabilities, etc. In the wrong hands, this information can be incredibly damaging to a company.
LogicHub playbooks can automatically baseline github activity, profiling a broad range of data points, including the typical number of github repositories and authorized users, unique logins from specific IP addresses, and the expected behavior of individual users within the repository. This establishes a profile of expected behavior that can be used to identify when a user is behaving abnormally. Rather than waiting for indications that a breach has occurred, LogicHub can proactively hunt for suspicious activity and automatically disable an account before it is used to perform malicious actions like stealing critical data.
BENEFITS TO THIS APPROACH
Hunting down open sources of intellectual property and sensitive data by hand is exceedingly difficult, as it would require sifting through a huge amount of accounts and repositories for unusual activity and cross referencing to normal baseline activity. To do this on a regular basis would require hundreds of hours of time for an average sized company. By automating a search through Github data, this check can be completed without human intervention and with no need for manual action concerning accounts.
This section contains some interesting reading related to the state of infosec today. These articles have a simple summary that explains the basic idea of the news and links to more information.
Finnish govt agency warns of unusual aircraft GPS interference
As a result of this interference, several flights were canceled out of an abundance of caution (though airlines can safely navigate without GPS). This is thought to be due to GPS spoofing, which is a relatively easy method of interrupting or hijacking a GPS link. An attacker fools a device by simulating GPS signals - accompanying hardware to do so is relatively inexpensive and easily available.
Android malware Escobar steals your Google Authenticator MFA codes
Authenticator applications are currently touted as one of the most secure ways to perform MFA. This specific malware (Escobar/Aberebot) undermines those expectations with a Google Auth code stealing feature. Nestled among VNC, webpage injection, SMS dispatch, photo capture, and audio recording features, this beta version of a malware-for-rent appears to be a capable banking trojan and is worth keeping an eye on.
New Browser-in-the Browser (BITB) Attack Makes Phishing Nearly Undetectable
This interesting new attack type uses embedded third-party single sign-on options (such as Twitter or Facebook) in websites as a vehicle of delivering a convincingly crafted fake window via iframe. This technique has actually been used once before in the wild to steal Steam application credentials.
Corrupted open-source software enters the Russian battlefield
Microsoft confirms they were hacked by Lapsus$ extortion group
We reviewed this topic and provided a bit of an explanation about what this means for the industry in the attached article, but essentially: Lapsus$ group used an insider at Microsoft to access systems and release a trove of source code. Microsoft released a detailed writeup on Lapsus gang in response, including detailed TTPs, but no note of exactly how their compromised account was taken.
Honda bug lets a hacker unlock and start your car via replay attack
Replay attacks are regularly seen for this purpose in car hacking - the attacker captures the signals from key fob to car, then replays them when desired to unlock the car themselves. 2016 to 2020 Honda Civic owners will not have this flaw directly fixed by Honda per a statement from Honda. All owners can do right now is have their key fob reset at the dealership should they believe a replay attack has occurred.
Kaspersky In Trouble
Kaspersky has been receiving a lot of large hits to P.R. and business in general due to sanctions imposed on Russia and Belarus. Included are HackerOne’s removal of Kaspersky’s bug bounty program off its platform, German officials warning against the program, and the US FCC adding the company to the list of national security threats. This is a bit of a problem, as Kaspersky antivirus is used by home users and in enterprises across the world, so it may mean a large decommissioning project for those with it installed.