Executive Summary

Informations
NameCVE-2018-14780First vendor Publication2018-08-15
VendorCveLast vendor Modification2018-10-22

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score2.1Attack RangeLocal
Cvss Impact Score2.9Attack ComplexityLow
Cvss Expoit Score3.9AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14780

CWE : Common Weakness Enumeration

%idName
100 %CWE-125Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application7
Application1

Sources (Detail)

SourceUrl
CONFIRM https://www.yubico.com/support/security-advisories/ysa-2018-03/
MISC https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/
MLIST http://www.openwall.com/lists/oss-security/2018/08/14/2

Alert History

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0
1
DateInformations
2018-10-23 00:20:02
  • Multiple Updates
2018-08-16 00:19:37
  • First insertion