Skip to content
Fencer Vulns
medium 4.6

CVE-2018-14780 json

An out-of-bounds read issue was discovered in the Yubico-Piv 1.5.0 smartcard driver.

published 2018-08-15 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-6664

cvss
4.6
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

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.

Patch / fix

  • yubico piv_manager 1.4.2
  • yubico piv_tool 1.6.0
  • yubico-piv-tool Debian 14, Debian 13, Debian 12 1.6.1-1

debian advisories DEBIAN-CVE-2018-14780

  • yubico-piv-tool Ubuntu 18.04 LTS 1.4.2-2ubuntu0.1
  • yubico-piv-tool Ubuntu Pro 16.04 LTS 1.0.3-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-14780

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • yubico-piv-tool SLE Module for Basesystem 15 1.5.0-3.3.33

suse advisories SUSE-SU-2019:1123-1

  • yubico-piv-tool openSUSE Tumbleweed 2.2.0-1.5
  • yubico-piv-tool openSUSE Leap 15.0 1.5.0-lp150.2.3.1

opensuse advisories openSUSE-SU-2024:11537-1openSUSE-SU-2019:1341-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-14780 updated cvss 6.4

yubico-piv-tool: Unchecked Buffer in libykpiv

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 4.6 CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.