Vulnerability Report

CVE-2018-14780

Title: Yubico Piv Manager Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2018-14780.

CWE Category CWE-125
Published Date Aug 15, 2018
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 4.6 CVSS v3.0
Exploit Probability (EPSS)
0.44%

Vulnerability Summary

CVE-2018-14780: 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.

Impacted Vendors

Y
yubico 3

Reference Links

http://www.openwall.com/lists/oss-security/2018/08/14/2 https://usn.ubuntu.com/4276-1/ https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/ https://www.yubico.com/support/security-advisories/ysa-2018-03/ http://www.openwall.com/lists/oss-security/2018/08/14/2 https://usn.ubuntu.com/4276-1/ https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/ https://www.yubico.com/support/security-advisories/ysa-2018-03/
CVSS v3.0
Source Entity [email protected]
Severity MEDIUM
4.6
Attack Vector
PHYSICAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity LOW
2.1
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2018-14780 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector PHYSICAL
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.