Unknown
CVE-2018-14779
CVE ID
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CVE-2018-14779
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
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.
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CVSS V3 Severity and Metrics
General Information
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
References
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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