CVE-2018-14779

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.
Configurations

Configuration 1

cpe:2.3:a:yubico:smart_card_minidriver:*:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2g:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2f:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2e:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2d:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2c:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2b:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_tool:*:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2:*:*:*:*:*:*:*

Information

Published : 2018-08-15 06:29

Updated : 2020-02-25 04:15


NVD link : CVE-2018-14779

Mitre link : CVE-2018-14779

Products Affected
No products.
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-787