SB2021071320 - Multiple vulnerabilities in Adobe Acrobat and Reader
Published: July 13, 2021 Updated: October 13, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 19 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2021-35988)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
2) Heap-based buffer overflow (CVE-ID: CVE-2021-28638)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a heap-based buffer overflow and execute arbitrary code on the system.
3) Use-after-free (CVE-ID: CVE-2021-28635)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a use-after-free error and execute arbitrary code on the system.
4) Use-after-free (CVE-ID: CVE-2021-35981)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a use-after-free error and execute arbitrary code on the system.
5) Use-after-free (CVE-ID: CVE-2021-35983)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a use-after-free error and execute arbitrary code on the system.
6) Command injection (CVE-ID: CVE-2021-28634)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper input validation. A local user can execute arbitrary OS commands and escalate privileges on the system.
7) Insecure DLL loading (CVE-ID: CVE-2021-28636)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to the application loads DLL libraries in an insecure manner. A remote attacker can place a specially crafted .dll file on a remote SMB fileshare, trick the victim into opening a file, associated with the vulnerable application, and execute arbitrary code on victim's system.
8) NULL pointer dereference (CVE-ID: CVE-2021-35984)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trick the victim to open a specially crafted file and perform a denial of service (DoS) attack.
9) NULL pointer dereference (CVE-ID: CVE-2021-35985)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trick the victim to open a specially crafted file and perform a denial of service (DoS) attack.
10) Type confusion (CVE-ID: CVE-2021-35986)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition within the getAnnots method when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a type confusion error and execute arbitrary code on the system.
11) Out-of-bounds read (CVE-ID: CVE-2021-35987)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
12) Out-of-bounds read (CVE-ID: CVE-2021-28637)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
13) Out-of-bounds write (CVE-ID: CVE-2021-28642)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger an Out-of-bounds write error and execute arbitrary code on the system.
14) Use-after-free (CVE-ID: CVE-2021-28639)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a use-after-free error and execute arbitrary code on the system.
15) Use-after-free (CVE-ID: CVE-2021-28641)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a use-after-free error and execute arbitrary code on the system.
16) Type confusion (CVE-ID: CVE-2021-28643)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a type confusion error and execute arbitrary code on the system.
17) Use-after-free (CVE-ID: CVE-2021-28640)
The vulnerability allows a remote attacker to compromise the affected system
The vulnerability exists due to a boundary condition when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document, trigger a use-after-free error and execute arbitrary code on the system.
18) Path traversal (CVE-ID: CVE-2021-28644)
The vulnerability allows a remote attacker to overwrite arbitrary files on the system.
The vulnerability exists due to an input validation error when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document and overwrite arbitrary files on the system.
19) Path traversal (CVE-ID: CVE-2021-35980)
The vulnerability allows a remote attacker to overwrite arbitrary files on the system.
The vulnerability exists due to an input validation error when processing PDF files. A remote attacker can trick the victim to open a specially crafted PDF document and overwrite arbitrary files on the system.
Remediation
Install update from vendor's website.