Zoom

Zoom, an online video collaboration platform has reportedly fixed the most dangerous bug on Apple macOS that could allow hackers to take control of users' ...

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At a recent conference, an expert in cybersecurity mentioned two security flaws he had found in Zoom for Mac.

But as with any application that people depend on, there are security questions to be mindful of when using Zoom — and one cybersecurity researcher recently raised two significant ones. As Engadget reports, Warldle pointed out that the security check Zoom uses could be exploited in such a way that a hacker would have access to the root directory of a Mac. Wardle told Zoom about the issue, but apparently Zoom’s method of fixing it created another vulnerability — one which could cause an older and less secure version of Zoom to be installed instead of the most recent version. Whether it’s for work or recreation, Zoom has become a much bigger part of our lives since the beginning of 2020.

Zoom has released a patch for its Mac app, fixing a vulnerability in its automatic updating function that could grant macOS root privileges to an attacker.

On August 13, Zoom released another patch for its macOS client, again targeting the same vulnerability. Wardle then told Zoom about the second bug, and waited. Wardle discovered a privilege escalation attack in the Zoom application, specifically one that takes advantage of the installer for Zoom itself.

A security researcher has found a way that an attacker could leverage the macOS version of Zoom to gain access over the entire operating system.

Though the installer requires a user to enter their password on first adding the application to the system, Wardle found that an auto-update function then continually ran in the background with superuser privileges. The exploit works by targeting the installer for the Zoom application, which needs to run with special user permissions to install or remove the main Zoom application from a computer. A security researcher has found a way that an attacker could leverage the macOS version of Zoom to gain access over the entire operating system.

The company said in a security update that the Zoom client for meetings for macOS, starting with version 5.7.3 and before 5.11.5, "contains a vulnerability in ...

"A local low-privileged user could exploit this vulnerability to escalate their privileges to root," said the company, The exploit worked by targeting the installer for the Zoom application, which needs to run with special user permissions to install or remove the main Zoom application from a computer. The company said in a security update that the Zoom client for meetings for macOS, starting with version 5.7.3 and before 5.11.5, "contains a vulnerability in the auto update process".

The company said in a security update that the Zoom client for meetings for macOS, starting with version 5.7.3 and before 5.11.5, “contains a vulnerability in ...

Zoom 5.11.5 for macOS fixed an exploit that could allow hackers to take control of a user's Mac.

Select “Check for updates” and Zoom should pop open a window giving you the details of what’s included. The vulnerability got a CVSS score of 8.8 on the company’s security bulletin (opens in new tab), denoting it of “high” severity. Wardle found that while the installer required a Mac owner to enter a password for installations, the auto-update function ran in the background with superuser privileges.

The move came after Mac security specialist Patrick Wardle demonstrated how a threat actor could abuse the way macOS handles software patches to trigger an ...

“Reversing the patch, we see the Zoom installer now invokes lchown to update the permissions of the update .pkg, thus preventing malicious subversion.” However, should the updater get any file with the same name as Zoom’s signing certificate, it would run it. One remained, however, and that one was patched on a later date to finally fully mitigate the issue.

An update for the virtual meeting platform Zoom on MacOS could have allowed a hacker to control a user's operating system.

The researcher who flagged the issue was quick to laud Zoom for their incredibly quick fix to attend to the issue. The lights were installed to… Was stoked to talk about (& live-demo 😅) a local priv-esc vulnerability in Zoom (for macOS). Zoom attended to the issue with an update to the patch and acknowledged the issue (CVE-2022-28756). Versions 5.7.3 to 5.11.5 of the MacOs app contained a vulnerability in the auto-update process that could be exploited by a local low-privileged user to gain root privileges to the operating system. An update for the virtual meeting platform Zoom on MacOS could have allowed a hacker to control a user’s operating system.

Enlarge / A critical vulnerability in Zoom for Mac OS allowed unauthorized users to downgrade Zoom or even gain root access. It has been fixed, and users should ...

Last May, a Zoom vulnerability that enabled a zero-click remote code execution used a similar downgrade and signature-check bypass. Prior to that, Zoom was caught running an entire undocumented web server on Macs, causing Apple to issue its own silent update to kill the server. Wardle previously revealed a Zoom vulnerability that let attackers steal Windows credentials by sending a string of text. It seemed secure, as only Zoom clients could connect to the privileged daemon, and only packages signed by Zoom could be extracted. You can download the update directly from Zoom or click on your menu bar options to "Check for updates." Wardle found that Zoom's updater is owned and runs as the root user.

At the well-known DEF CON security shindig in Las Vegas, Nevada, last week, Mac cybersecurity researcher Patrick Wardle revealed a “get-root” elevation of ...

Along with your physical licence, you also need to present a one-time alphanumeric “proof of recent validity” code, issued within the last 21 days, to reduce the potential TOCTOU gap from 10 years to just three weeks. If you’re using Zoom on a Mac, open the app and then, in the menu bar, go to To modify the package file in order to trick the system into giving you root access, you’d need to have root access already, so you wouldn’t need an EoP bug of this sort in the first place. The TOCTOU problem doesn’t apply because the check in step 2 remains valid until the use of the file begins, leaving no window of opportunity for the check to become invalid. Developer ID Installer: Zoom Video Communications, Inc. (BJ4HAAB9B3) Expires: 2027-02-01 22:12:15 +0000 SHA256 Fingerprint: 6D 70 1A 84 F0 5A D4 C1 C1 B3 AE 01 C2 EF 1F 2E AE FB 9F 5C A6 80 48 A4 76 60 FF B5 F0 57 BB 8C ------------------------------------------------------------------------ 2. This gave local attackers a loophole to modify the update package after its digital signature had been validated (step 2), without affecting the version check details (step 3), but just before the installer took control of the package file in order to process it with root privileges (step 4). Developer ID Certification Authority Expires: 2027-02-01 22:12:15 +0000 SHA256 Fingerprint: 7A FC 9D 01 A6 2F 03 A2 DE 96 37 93 6D 4A FE 68 09 0D 2D E1 8D 03 F2 9C 88 CF B0 B1 BA 63 58 7F ------------------------------------------------------------------------ 3. As Wardle explains in his paper, one of the bugs he discovered and disclosed was a flaw in the first step listed above, when Zoom’s auto-updater tried to verify the authenticity of the update package it had just downloaded. They also need to maintain the integrity of the update files that they ultimately consume, so that a local attacker can’t sneakily modify the “verified safe” update bundle that’s just been downloaded in the brief period between it being fetched and activated. Wardle explains the bug disclosure timeline in the slides from his DEF CON talk, and lists a stream of Zoom updates related to the flaws he discovered. Given the apparent speed and ease with which Zoom was able to emit a patch for the bug, dubbed CVE-2022-28756, you’re probably wondering why Wardle didn’t tell Zoom about the bug in advance, setting the day of his speech as the deadline for revealing the details. That would have given Zoom time to push out the update to its many Mac users (or at least to make it available to those who believe in patch early/patch often), thus eliminating the gap between Wardle explaining to the world how to abuse the bug, and the patching of the bug.

The latest update fixes a critical vulnerability in the Mac version of the app that meant that a security hole in Zoom could be used to gain access to a user's ...

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From its first gathering in 1981 in the U.K., the multi-day Jewish learning retreats have spread to nearly 100 locations around the world. They are run and ...

We think we have fertile ground for success, and we’re just going to try.” Those in the singles track will also have specially colored badges, so they can find each other easily without asking embarrassing questions, she added. Wichter points out that David Horovitz, founding editor of the Times of Israel, is one teacher who will take advantage of that option, “so he doesn’t have to fly here from Jerusalem for one day” she said.

If you're a Zoom user with a Mac, there's a critical security fix rolling out now that you should install immediately. The Zoom for Mac update addresses a ...

The company was forced to address a major vulnerability in 2019 that allowed websites to hijack your Mac’s webcams. Zoom quickly then rolled out an update to its Mac app to patch the vulnerability. The Zoom for Mac update addresses a major security vulnerability that could have allowed anyone to gain root access to your computer. Zoom issued a security bulletin after Wardle detailed the vulnerability. It seemed secure, as only Zoom clients could connect to the privileged daemon, and only packages signed by Zoom could be extracted. Zoom Video ... Certification Authority Apple Root CA.pkg“), this check could be bypassed.

The vulnerability, named CVE-2022-28756, was found in Zoom for macOS versions 5.7.3 to 5.11.3 and potentially allowed an attacker to gain access and take over ...

That it took Zoom seven months to address a known vulnerability and then to release a flawed update does not reflect well on it. Zoom was informed of the vulnerability seven months before Wardle went public with the details and had ample opportunity to patch it properly, but it failed to do so. According to Wardle, as reported by Naked Security by Sophos plc, just before DEF CON, Zoom said it had fixed the vulnerability. Where this vulnerability exposure becomes especially interesting is that it was exposed before Zoom had a proper patch available for it. Having taken advantage of the first stage, the more vulnerable version of Zoom, or a different package, would allow the attacker to gain root access to the victim’s Mac. The vulnerability, named CVE-2022-28756, was found in Zoom for macOS versions 5.7.3 to 5.11.3 and potentially allowed an attacker to gain access and take over an Apple Inc. computer through Zoom’s package installer.

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The video calling software's auto-updater software not only had root-level access, but had a signature verification system that you could fool simply by giving ...

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First revealed by security researcher Patrick Wardle, certain versions of Zoom for MacOS contained a vulnerability that could give hackers root privileges.

He demonstrated that it was possible to steal every password in plain text using an app downloaded from the internet without needing the Mac’s Keychain master login. “Reversing the patch, we see the Zoom installer now invokes lchown to update the permissions of the update .pkg, thus preventing malicious subversion.” He added further details on Twitter.

Video conferencing software Zoom was recently found to have a flaw in its Mac client that allowed hackers to gain remote access to users' systems.

Wardle, the security researcher, also lauded Zoom for the quick response. Users can download the update by opening their app on the MacOS devices and then going to zoom.us from the menu bar on top of the screen. The exploit targets the Zoom installer, which requires special user permission to run.

Saudi Arabia's Public Investment Fund (PIF) bought shares in Alphabet , Zoom Video and Microsoft as part of a wider pick of U.S. stocks, bringing the market ...

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The researcher found that hackers could trick Zoom into installing malware.

The researcher found that hackers could trick Zoom into installing malware by putting the company's cryptographic signature on the package. Then simply check for new updates and download if available. ZoomClient for Meetings for macOS (Standard and for IT Admin) starting with version 5.7.3 and before 5.11.5 contains a vulnerability in the auto update process. Patrick Wardle first came across the bug and then presented it at the Def Con Social media offers parents more controls to make services safer and age-appropriate. - Social media offers parents more controls to make services safer and age-appropriate.

Zoom has patched high-severity macOS application vulnerabilities disclosed by a researcher at the DEF CON conference.

Zoom patched some related vulnerabilities in the past months, but Wardle said during his talk that his attack had still worked. He also showed how a malicious actor could hijack the update mechanism to downgrade Zoom to an older version that can contain known vulnerabilities. Details of the flaws were disclosed on Friday at the DEF CON conference in Las Vegas by macOS security researcher Patrick Wardle.

Daiwa upgrades PayPal to outperform, cites several positive upcoming catalysts. Sarah Minan hour ago. thumbnail · CNBC Pro Sell Bed Bath & Beyond as it's ...

Deutsche Bank reiterates Wells Fargo as a top pick Deutsche kept its buy rating on the banking giant and said it's one of the "best leveraged" banks to rising interest rates. The firm added it sees a case for Snap' s "growth to reaccelerate " "Although, we were surprised by the level of revenue deceleration in Snap's 2Q results and outlook, we are optimistic that Snap guided 3Q near the period of maximum uncertainty for the US Online ad market. Bank of America reiterates Apple as buy Bank of America said the firm is standing by its buy rating on shares of Apple after recent App store growth revealed a slight deceleration. "That said, we are becoming tactically cautious, and open a negative Catalyst Watch, following the recent ~30% run, as we see usage headwinds continuing to build, with consensus numbers too high (Q3 and FY24)." Bernstein reiterates Amazon as outperform Bernstein said shares of the e-commerce giant are "relatively derisked." Citi opens a negative catalyst watch on Snowflake Citi kept its buy rating on shares of Snowflake but opened a negative catalyst watch, noting that "usage headwinds [are] continuing to build." "We upgraded PYPL to Outperform as a number of positive catalysts are falling into place including cost reductions and a share buyback in response to the increased stake taken by Elliott Investment Management, the appointment of a new CFO, and the decision to hold an Investor Day event."

Award-winning collaboration display and companion whiteboard empowers the hybrid workplace. SAN JOSE, Calif., Aug. 16, 2022 /PRNewswire/ -- DTEN ONboard, ...

DTEN was founded in 2015 and headquartered in San Jose, California; Zoom Video Communications, Inc. is an investor. DTEN is changing the way people connect and collaborate through immersive, video-first devices and subscription services. Designed in collaboration with Zoom, DTEN ONboard elevates collaboration through its advanced touch-enabled 55-inch display, allowing in-room and remote participants to interact equally. As recipient of multiple international awards, DTEN is recognized for plug-and-play simplicity, superior audiovisual clarity, and fluent, elegant designs. Recognizing many companies have already invested in video conferencing systems, DTEN ONboard complements — and elevates — existing set-ups by adding advanced, interactive touch. Included among the device's many features are real-time touch to brainstorm, visualize and diagram ideas; an expandable canvas to elaborate collaborations; easy sharing via email or Zoom chat; and a persistent hub to promote building on ideas after a meeting ends.

Citi Research downgraded Zoom's shares to sell amid macroeconomic pressures, competition from Microsoft Teams. Zoom shares have lost 80% of their value ...

“We continue to see strong job posting activity…which to us suggests there could be downside risk to street margin estimates, should slower revenue growth play out,” Radke wrote. Radke also worries about margin impacts related to the shifting nature of Zoom’s customer mix. However, Radke is now concerned that some of these “online” businesses could “churn,” or leave Zoom, which could increase the company’s mix of enterprise business.