SB2021102717 - Multiple vulnerabilities in Apple watchOS
Published: October 27, 2021 Updated: February 16, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 16 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2021-30907)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow in the Audio component. A malicious application can trigger integer overflow and execute arbitrary code with elevated privileges.
2) Use-after-free (CVE-ID: CVE-2021-30886)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the macOS kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with kernel privileges.
3) Universal Cross-site scripting (CVE-ID: CVE-2021-30890)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in WebKLit. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
4) Buffer overflow (CVE-ID: CVE-2021-30889)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Information disclosure (CVE-ID: CVE-2021-30888)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists in WebKit. A malicious website using Content Security Policy reports may be able to leak information via redirect behavior.
6) Security restrictions bypass (CVE-ID: CVE-2021-30887)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due an error within the WebKit component. A remote attacker can trick the victim to open a specially crafted website and bypass Content Security Policy restrictions.
7) State Issues (CVE-ID: CVE-2021-30915)
The vulnerability allows a local application to gain access to sensitive information.
The vulnerability exists in the UIKit. An attacker with physical access to the affected system can determine characteristics of a user's password in a secure text entry field and gain unauthorized access to the system.
8) Buffer overflow (CVE-ID: CVE-2021-30909)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the macOS kernel subsystem. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code with kernel privileges.
9) Integer overflow (CVE-ID: CVE-2021-30883)
The vulnerability allows a malicious application to escalate privileges on the system.
The vulnerability exists due to a boundary error within the IOMobileFrameBuffer subsystem. A malicious application can trigger integer overflow and execute arbitrary code on with kernel privileges.
Note, the vulnerability is being actively exploited in the wild.
10) Buffer overflow (CVE-ID: CVE-2021-30917)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing ICC profiles in ColorSync subsystem. A remote attacker can create a specially crafted image, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
11) Security restrictions bypass (CVE-ID: CVE-2021-30906)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due improper permissions checks in iCloud. A local user can bypass security restrictions bypass and escalate privileges on the system.
12) Information disclosure (CVE-ID: CVE-2021-30896)
The vulnerability allows a local application to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the Game Center. A malicious application can gain unauthorized access to user's gameplay data.
13) Information disclosure (CVE-ID: CVE-2021-30895)
The vulnerability allows a malicious application to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the Game Center. A malicious application can gain unauthorized access to user's contacts.
14) Input validation error (CVE-ID: CVE-2021-30881)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in FileProvider. A remote attacker trick the victim to open a specially crafted archive and execute arbitrary code on the system.
15) Out-of-bounds write (CVE-ID: CVE-2021-30919)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error within the CoreGraphics subsystem when processing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
16) Out-of-bounds read (CVE-ID: CVE-2021-30905)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the CoreAudio subsystem. A remote attacker can create a specially crafted audio file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
Remediation
Install update from vendor's website.