CVE-2018-14780
First published: Wed Aug 15 2018(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Yubico Piv Manager | <1.4.2 | |
| Yubico Piv Manager | =1.4.2 | |
| Yubico Piv Manager | =1.4.2b | |
| Yubico Piv Manager | =1.4.2c | |
| Yubico Piv Manager | =1.4.2d | |
| Yubico Piv Manager | =1.4.2e | |
| Yubico Piv Manager | =1.4.2f | |
| Yubico Piv Manager | =1.4.2g | |
| Yubico Piv Tool | <1.6.0 | |
| Yubico Smart Card Minidriver | <=3.7.3.160 | |
| debian/yubico-piv-tool | 2.2.0-1 2.2.0-1.1 2.5.2-1 |
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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/
- https://launchpad.net/bugs/cve/CVE-2018-14780
- https://security-tracker.debian.org/tracker/CVE-2018-14780
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14780
- https://nvd.nist.gov/vuln/detail/CVE-2018-14780
- https://ubuntu.com/security/CVE-2018-14780
Frequently Asked Questions
What is CVE-2018-14780?
CVE-2018-14780 is an out-of-bounds read issue in the Yubico-Piv smartcard driver.
How severe is CVE-2018-14780?
CVE-2018-14780 has a severity level of medium.
What software is affected by CVE-2018-14780?
The Yubico-Piv tool, Yubico Piv Manager, and Yubico Smart Card Minidriver are affected by CVE-2018-14780.
How can I fix CVE-2018-14780?
To fix CVE-2018-14780, update your Yubico-Piv tool, Yubico Piv Manager, or Yubico Smart Card Minidriver to the recommended versions.
Where can I find more information about CVE-2018-14780?
You can find more information about CVE-2018-14780 on the Openwall and X41-DSEC websites.
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