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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2018-14779 Detail

Description

A buffer overflow 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_transfer_data()`: {% highlight c %} if(*out_len + recv_len - 2 > max_out) { fprintf(stderr, "Output buffer to small, wanted to write %lu, max was %lu.", *out_len + recv_len - 2, max_out); } if(out_data) { memcpy(out_data, data, recv_len - 2); out_data += recv_len - 2; *out_len += recv_len - 2; } {% endhighlight %} -- it is clearly checked whether the buffer is big enough to hold the data copied using `memcpy()`, but no error handling happens to avoid the `memcpy()` in such cases. This code path can be triggered with malicious data coming from a smartcard.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2018/08/14/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2018/08/14/2 Mailing List  Third Party Advisory 
https://usn.ubuntu.com/4276-1/
https://usn.ubuntu.com/4276-1/
https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/ Third Party Advisory 
https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/ Third Party Advisory 
https://www.yubico.com/support/security-advisories/ysa-2018-03/ Vendor Advisory 
https://www.yubico.com/support/security-advisories/ysa-2018-03/ Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-14779
NVD Published Date:
08/15/2018
NVD Last Modified:
11/20/2024
Source:
MITRE