SB2021072216 - Multiple vulnerabilities in Apple iOS and iPadOS
Published: July 22, 2021 Updated: February 16, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 36 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2021-30763)
The vulnerability allows a local application to bypass implemented security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input in ActionKit. A malicious application can use a specially crafted shortcut to bypass Internet permission requirements.
2) Out-of-bounds read (CVE-ID: CVE-2020-36331)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the ChunkAssignData() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
3) Out-of-bounds read (CVE-ID: CVE-2018-25010)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the ApplyFilter() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
4) Heap-based buffer overflow (CVE-ID: CVE-2018-25011)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in PutLE16() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Use of Uninitialized Variable (CVE-ID: CVE-2018-25014)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to usage of unitialized variable in the ReadSymbol() function in libwebp. A remote attacker can trick the victim to open a specially crated file and execute arbitrary code on the system.
6) Heap-based buffer overflow (CVE-ID: CVE-2020-36328)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in WebPDecodeRGBInto function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Use-after-free (CVE-ID: CVE-2020-36329)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in libwebp. A remote attacker can trick the victim to open a specially crafted file, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
8) Out-of-bounds read (CVE-ID: CVE-2020-36330)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the ChunkVerifyAndAssign() function in libwebp. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
9) Input validation error (CVE-ID: CVE-2021-30796)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the Model I/O subsystem. A remote attacker can trick the victim to open a specially crafted USD image and perform a denial of service (DoS) attack.
10) Security features bypass (CVE-ID: CVE-2021-30770)
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a logic error within the OS Kernel subsystem. A local application that has already achieved kernel code execution may be able to bypass kernel memory mitigations.
11) Out-of-bounds write (CVE-ID: CVE-2021-30792)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in Model I/O. A remote attacker can create a specially crafted ABC file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
12) Out-of-bounds read (CVE-ID: CVE-2021-30791)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Model I/O. A remote attacker can create a specially crafted ABC file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
13) Race condition (CVE-ID: CVE-2021-30798)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a race condition. A local user can bypass certain Privacy preferences.
14) Type Confusion (CVE-ID: CVE-2021-30758)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error in WebKit. A remote attacker can trick the victim to open a specially crafted website, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
15) Use-after-free (CVE-ID: CVE-2021-30795)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
16) Input validation error (CVE-ID: CVE-2021-30797)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in WebKit. A remote attacker can trick the victim to visit a specially crafted website and execute arbitrary code on the system.
17) Buffer overflow (CVE-ID: CVE-2021-30799)
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.
18) Use-after-free (CVE-ID: CVE-2021-3518)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in libxml2. A remote attacker can use a specially crafted file and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
19) Security restrictions bypass (CVE-ID: CVE-2021-30769)
The vulnerability allows a local application to bypass implemented security restrictions.
The vulnerability exists due to a logic issue within OS Kernel subsystem. A local application can bypass Pointer Authentication.
20) Input validation error (CVE-ID: CVE-2021-30781)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient validation of user-supplied input within the Audio subsystem. A local user can execute arbitrary code with elevated privileges.
21) Out-of-bounds write (CVE-ID: CVE-2021-30780)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within CVMS subsystem. A local user can trigger out-of-bounds write and execute arbitrary code with root privileges.
22) Buffer overflow (CVE-ID: CVE-2021-30748)
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a boundary error within the AVEVideoEncoder subsystem. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code with kernel privileges.
23) Buffer overflow (CVE-ID: CVE-2021-30775)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing audio files within the CoreAudio subsystem. A remote attacker can create a specially crafted audio file, 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.
24) Input validation error (CVE-ID: CVE-2021-30776)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the CoreAudio subsystem. A remote attacker can pass specially crafted audio file to the application and perform a denial of service (DoS) attack.
25) Race condition (CVE-ID: CVE-2021-30786)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to a race condition when processing PDF files within the CoreServices subsystem. A remote attacker can create a specially crafted PDF file to trigger the race condition and execute arbitrary code on the system.
26) Out-of-bounds read (CVE-ID: CVE-2021-30789)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary condition within the CoreText component. A remote attacker can create a specially crafted font file, trick the victim into opening it, trigger out-of-bounds read error and execute arbitrary code on the system.
27) Input validation error (CVE-ID: CVE-2021-30774)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient validation of user-supplied input within Crash Reporter. A local user can execute arbitrary code with root privileges.
28) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-30768)
The vulnerability allows a local application to bypass sandbox restrictions.
The vulnerability exists due to improperly imposed security restrictions within the dyld component. A sandboxed process may be able to circumvent sandbox restrictions.
29) Buffer overflow (CVE-ID: CVE-2021-30785)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing image files in ImageIO. A remote attacker can create a specially crafted PICT file, 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.
30) Improper access control (CVE-ID: CVE-2021-30804)
The vulnerability allows a local application to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A local application can bypass implemented security restrictions and gain unauthorized access to Find My data.
31) Integer overflow (CVE-ID: CVE-2021-30760)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in FontParser. A remote attacker can pass specially crafted font file, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
32) Out-of-bounds read (CVE-ID: CVE-2021-30788)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in FontParser component. A remote attacker can create a specially crafted TTF font file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
33) Stack-based buffer overflow (CVE-ID: CVE-2021-30759)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing font files in FontParser in libType1Scaler library. A remote unauthenticated attacker can trick the victim to open a specially crafted PFB font file, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
34) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2021-30773)
The vulnerability allows a local application to bypass implemented security restrictions.
The vulnerability exists due to improper signature validation within the Identity Service component. A malicious application can bypass code signing checks.
35) Use-after-free (CVE-ID: CVE-2021-30802)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing images on web pages. A remote attacker can create a specially crafted web content, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
36) Buffer overflow (CVE-ID: CVE-2021-30779)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing image files in ImageIO. 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.
Remediation
Install update from vendor's website.