CVE-2018-14780
An out-of-bounds read issue was discovered in the Yubico-Piv 1.5.0 smartcard driver.
Does this matter?
Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.0
- 4.6 MEDIUMCVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.45% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- yubico/piv manager · yubico/piv tool · yubico/smart card minidriver
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2018/08/14/2Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4276-1/
- 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
- http://www.openwall.com/lists/oss-security/2018/08/14/2Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4276-1/
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.