7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
61.0%
Earlier this week Dropbox team unveiled details of three critical vulnerabilities in Apple macOS operating system, which altogether could allow a remote attacker to execute malicious code on a targeted Mac computer just by convincing a victim into visiting a malicious web page.
The reported vulnerabilities were originally discovered by Syndis, a cybersecurity firm hired by Dropbox to conduct simulated penetration testing attacks as Red Team on the company’s IT infrastructure, including Apple software used byDropbox.
The vulnerabilities were discovered and disclosed to Apple security team in February this year, which were then patched by Apple just over one month later with the release of its March security updates. DropBox applauded Apple for its quick response to its bug report.
According to DropBox, the vulnerabilities discovered by Syndis didn’t just affect its macOS fleet, but also affected all Safari users running the latest version of the web browser and operating system at the time.
Here’s the list of the three reported (then-zero-day) vulnerabilities:
As shown in the proof-of-concept video demonstration, the researchers were able to create a two-stage attack by chaining together all the three vulnerabilities to take control of a Mac computer just by convincing a victim into visiting a malicious web page with Safari.
> “The first stage includes a modified version of the Terminal app, which is registered as a handler for a new file extension (.workingpoc). In addition, it would contain a blank folder called “test.bundle” which would be set as the default “openfolder” which automatically would open /Applications/Terminal.app without prompt,” DropBox says in its blog post.
“The second stage includes an unsigned shellscript with the extension “.workingpoc” which is then executed within the running Terminal application without prompt.”
Apple released security updates on March 29 that included the security fixes for the three vulnerabilities. So, you just need to make sure that you install all monthly security updates regularly in order to protect your systems against any threat.
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
61.0%