CVE-2020-13131
Severity CVSS v4.0:
Pending analysis
Type:
CWE-125
Out-of-bounds Read
Publication date:
09/07/2020
Last modified:
16/07/2020
Description
An issue was discovered in Yubico libykpiv before 2.1.0. lib/util.c in this library (which is included in yubico-piv-tool) does not properly check embedded length fields during device communication. A malicious PIV token can misreport the returned length fields during RSA key generation. This will cause stack memory to be copied into heap allocated memory that gets returned to the caller. The leaked memory could include PINs, passwords, key material, and other sensitive information depending on the integration. During further processing by the caller, this information could leak across trust boundaries. Note that RSA key generation is triggered by the host and cannot directly be triggered by the token.
Impact
Base Score 3.x
4.30
Severity 3.x
MEDIUM
Base Score 2.0
1.90
Severity 2.0
LOW
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:yubico:libykpiv:*:*:*:*:*:*:*:* | 2.1.0 (excluding) | |
cpe:2.3:a:yubico:piv_tool_manager:*:*:*:*:*:*:*:* | 2.0.0 (excluding) | |
cpe:2.3:a:yubico:yubikey_smart_card_minidriver:*:*:*:*:*:*:*:* | 4.1.0.172 (including) |
To consult the complete list of CPE names with products and versions, see this page