{"uuid": "aed6e094-dcdc-489f-971a-d82b6a62acef", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-40469", "type": "seen", "source": "https://t.me/hacking_Attack/27441", "content": "38, this vulnerability is, again, high severity \u2013 it allows an attacker to bypass the security rules of Windows AppContainer Firewall \u2013 as well as publicly disclosed.\n\nAppContainers are designed to protect against infiltration from third-party apps. They essentially isolate the runtime environment of applications with the goal of blocking malicious code.\n\nThis vulnerability results in loss of confidentiality and can be exploited without any user interaction.\n\nMaarten Buis, Automox product marketing manager, noted that a successful attacker that exploits this vulnerability could run arbitrary code on the endpoint, but they need to have administrative privileges before they can meaningfully exploit it.\n\n\u201cHowever, there is still a significant risk because no user interaction is required, and no special endpoint conditions are required for an attack to succeed,\u201d Buis explained to Threatpost via email .\n\nThere are no reports of the vulnerability having been actively exploited \u2013 yet. Still, Automox recommends a rapid patch rollout \u2013 as in, within 72 hours of the patch being made available \u2013 given that it\u2019s been publicly disclosed in a proof of concept by James Forshaw of Google\u2019s Project Zero.\n\nAleks Haugom, Automox product marketing manager, noted that, given the sheer number of apps users download, \u201cmaking sure that AppContianers cannot be compromised is important to every company\u2019s security hygiene.\u201d\nSee Also: Hacking stories \u2013 Operation Aurora: When China hacked Google How to Prioritize?Williams said that he doesn\u2019t want to sound like a broken record, but he\u2019s still going to say what security experts say every Patch Tuesday. To wit, \u201cPatch now.\u201d\n\nThat\u2019s particularly true for the MysterySnail campaign, he said: \u201cSeriously, this is not a patch Tuesday to delay on,\u201d he advised. \u201cThreat actors are actively exploiting the vulnerability for CVE-2021-40449 to elevate from user to administrator permissions on compromised systems. While CVE-2021-40449 doesn\u2019t allow for remote exploitation, that doesn\u2019t mean it can be taken lightly. Threat actors regularly gain access to target machines using phishing attacks and vulnerabilities such as CVE-2021-40449 allow them to evade more effectively bypass endpoint controls and evade detection.\u201d\n\nBesides which, MysterySnail\u2019s success in weaponizing this flaw means that other APTs will soon follow, Williams said: \u201cBecause the code for this has already been weaponized by one threat actor, we should expect to see it weaponized by others more quickly because there is already sample exploit code in the wild to work with.\u201d\n\nDanny Kim, Principle Architect at Virsec, who spent time at Microsoft during his graduate work on the OS security development team, voted for prioritizing the three critical remote code execution vulnerabilities: CVE-2021-40469, CVE-2021-26427 and CVE-2021-40487, which affect a wide range of Windows versions.\n\n\u201cThese vulnerabilities not only have a high to critical CVSS rating, but two of the three attacks (CVE-2021-40487, CVE-2021-40469) can be executed remotely,\u201d he stressed. \u201cRemote Code Execution (RCE) attacks are especially devastating because once the exploit is executed, [the attackers] can launch any kind of cyberattack, including ransomware.\n\nHe noted that RCE vulnerabilities were also the root cause of the Hafnium and Kaseya attacks. \u201cTrying to mitigate the attacker\u2019s actions after they have gained access is significantly harder than stopping the actions that led to the successful exploit,\u201d Kim pointed out. \u201cThis is why runtime monitoring of enterprises\u2019 server workloads is becoming a key part of today\u2019s cybersecurity. Stopping the exploitation of these vulnerabilities has to start with equipping the servers themselves with constant, deterministic runtime protection, not just detection.\u201d\nSource: threatpost.com (Click Link)Recent News* https://www.blackhatethicalhacking.com/wp-content/uploads/2021/10/apple-iphone-hacking-90[...]\n\n___________________________ \n@hacking_Attack\n@Hacking_Video", "creation_timestamp": "2026-09-01T20:02:13.828792Z"}