Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Physical
0

CVE-2018-14780

Disclosure Date: August 15, 2018 •
CVE-2018-14780 CVSS v3 Base Score: 4.6
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
4.6 Medium
Impact Score:
3.6
Exploitability Score:
0.9
Vector:
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector (AV):
Physical
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
None
Availability (A):
None

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • yubico

Products

  • piv manager,
  • piv manager 1.4.2,
  • piv manager 1.4.2b,
  • piv manager 1.4.2c,
  • piv manager 1.4.2d,
  • piv manager 1.4.2e,
  • piv manager 1.4.2f,
  • piv manager 1.4.2g,
  • piv tool,
  • smart card minidriver
Technical Analysis