SB2022080536 - Multiple vulnerabilities in OpenSC

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Main Vulnerability Database SB2022080536

SB2022080536 - Multiple vulnerabilities in OpenSC

Published: August 5, 2022 Updated: August 5, 2022

Security Bulletin ID SB2022080536
Severity
Low
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Physical access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Double Free (CVE-ID: CVE-2021-42778)

The vulnerability allows an attacker with physical access to perform a denial of service attack.

The vulnerability exists due to a boundary error. An attacker with physical access can pass specially crafted data to the application, trigger double free error, and perform a denial of service attack.


2) Use-after-free (CVE-ID: CVE-2021-42779)

The vulnerability allows an attacker with physical access to perform a denial of service attack.

The vulnerability exists due to a use-after-free error in Opensc in sc_file_valid. An attacker with physical access can trigger use-after-free to perform a denial of service attack.


3) Heap-based buffer overflow (CVE-ID: CVE-2021-42781)

The vulnerability allows an attacker with physical access to perform denial of service attack.

The vulnerability exists due to a boundary error in Opensc before in pkcs15-oberthur.c. An attacker with physical access can pass specially crafted data to the application, trigger a heap-based buffer overflow and perform denial of service attack.


4) Stack-based buffer overflow (CVE-ID: CVE-2021-42782)

The vulnerability allows an attacker with physical access to perform a denial of service attack.

The vulnerability exists due to a boundary error in Opensc in various places. An attacker with physical access can trigger stack-based buffer overflow and perform a denial of service attack.


5) Unchecked Return Value (CVE-ID: CVE-2021-42780)

The vulnerability allows an attacker with physical access to perform denial of service attacks.

The vulnerability exists due to use after return issue in insert_pin() function in  Opensc. An attacker with physical access can trigger the vulnerability to perform denial of service attacks.


Remediation

Install update from vendor's website.

References