SB2020070925 - Multiple vulnerabilities in Yubico PIV Tool and YubiKey Smart Card Minidrive

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Main Vulnerability Database SB2020070925

SB2020070925 - Multiple vulnerabilities in Yubico PIV Tool and YubiKey Smart Card Minidrive

Published: July 9, 2020

Security Bulletin ID SB2020070925
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Physical access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2020-13131)

The vulnerability allows a local attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the "ykpiv_util_generate_key()" function. An attacker with physical access can use a specially crafted PIV token, trigger out-of-bounds read error and read contents of memory on the system.


2) Buffer overflow (CVE-ID: CVE-2020-13132)

The vulnerability allows a local attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the passed in pointer is deallocated instead of the dynamically allocated one inside the "ykpiv_util_generate_key()" function. A local attacker can use a specially crafted token, trigger memory corruption and cause a denial of service condition on the target system.



Remediation

Install update from vendor's website.

References