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
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Physical access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


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

CWE-ID: CWE-415 - Double Free

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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)

CWE-ID: CWE-252 - Unchecked Return Value

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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