CVEvulnerability

CVE-2018-14780

4.6 MEDIUM Published 2018-08-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-08-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
4.6 MEDIUM — CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-125

Description

An out-of-bounds read issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `_ykpiv_fetch_object()`: {% highlight c %} if(sw == SW_SUCCESS) { size_t outlen; int offs = _ykpiv_get_length(data + 1, &outlen); if(offs == 0) { return YKPIV_SIZE_ERROR; } memmove(data, data + 1 + offs, outlen); *len = outlen; return YKPIV_OK; } else { return YKPIV_GENERIC_ERROR; } {% endhighlight %} -- in the end, a `memmove()` occurs with a length retrieved from APDU data. This length is not checked for whether it is outside of the APDU data retrieved. Therefore the `memmove()` could copy bytes behind the allocated data buffer into this buffer.

Affected configurations

• yubico piv manager (< 1.4.2) • yubico piv manager 1.4.2 • yubico piv manager 1.4.2b • yubico piv manager 1.4.2c • yubico piv manager 1.4.2d • yubico piv manager 1.4.2e • yubico piv manager 1.4.2f • yubico piv manager 1.4.2g • yubico piv tool (< 1.6.0) • yubico smart card minidriver (<= 3.7.3.160)

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References