Upstream information

CVE-2018-14779 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.2
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.8 7.1
Vector CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Access Vector Physical Physical
Access Complexity Low High
Privileges Required None None
User Interaction None None
Scope Unchanged Changed
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3 3
SUSE Bugzilla entry: 1104809 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 12 SP4
SUSE Linux Enterprise High Performance Computing 12 SP5
SUSE Linux Enterprise Server 12 SP4
SUSE Linux Enterprise Server 12 SP5
  • libykcs11-1 >= 1.5.0-3.16
  • libykpiv1 >= 1.5.0-3.16
  • yubico-piv-tool >= 1.5.0-3.16
SUSE Linux Enterprise Module for Basesystem 15 SP1
SUSE Linux Enterprise Module for Basesystem 15 SP2
SUSE Linux Enterprise Module for Basesystem 15 SP3
  • libykcs11-1 >= 1.6.2-4.30
  • libykcs11-devel >= 1.6.2-4.30
  • libykpiv-devel >= 1.6.2-4.30
  • libykpiv1 >= 1.6.2-4.30
  • yubico-piv-tool >= 1.6.2-4.30
SUSE Linux Enterprise Module for Basesystem 15
  • libykcs11-1 >= 1.5.0-3.3.33
  • libykcs11-devel >= 1.5.0-3.3.33
  • libykpiv-devel >= 1.5.0-3.3.33
  • libykpiv1 >= 1.5.0-3.3.33
  • yubico-piv-tool >= 1.5.0-3.3.33
Patchnames:
SUSE-SLE-Module-Basesystem-15-2019-1123
openSUSE Leap 15.0
  • libykcs11-1 >= 1.5.0-lp150.2.3.1
  • libykcs11-devel >= 1.5.0-lp150.2.3.1
  • libykpiv-devel >= 1.5.0-lp150.2.3.1
  • libykpiv1 >= 1.5.0-lp150.2.3.1
  • yubico-piv-tool >= 1.5.0-lp150.2.3.1
Patchnames:
openSUSE-2019-1341
openSUSE Tumbleweed
  • libykcs11-2 >= 2.2.0-1.5
  • libykcs11-devel >= 2.2.0-1.5
  • libykpiv-devel >= 2.2.0-1.5
  • libykpiv2 >= 2.2.0-1.5
  • yubico-piv-tool >= 2.2.0-1.5
Patchnames:
openSUSE Tumbleweed GA libykcs11-2-2.2.0-1.5


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE CaaS Platform 4.0 yubico-piv-tool Already fixed
SUSE Enterprise Storage 6 yubico-piv-tool Already fixed
SUSE Linux Enterprise High Performance Computing 12 SP5 yubico-piv-tool Already fixed
SUSE Linux Enterprise High Performance Computing 15 LTSS yubico-piv-tool In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS yubico-piv-tool Already fixed
SUSE Linux Enterprise Module for Basesystem 15 yubico-piv-tool Released
SUSE Linux Enterprise Module for Basesystem 15 SP2 yubico-piv-tool Already fixed
SUSE Linux Enterprise Server 12 SP4 ESPOS yubico-piv-tool Already fixed
SUSE Linux Enterprise Server 12 SP4 LTSS yubico-piv-tool Already fixed
SUSE Linux Enterprise Server 12 SP5 yubico-piv-tool Already fixed
SUSE Linux Enterprise Server 15 ESPOS yubico-piv-tool In progress
SUSE Linux Enterprise Server 15 LTSS yubico-piv-tool In progress
SUSE Linux Enterprise Server 15 SP1 LTSS yubico-piv-tool Already fixed
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 yubico-piv-tool Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP4 yubico-piv-tool Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP5 yubico-piv-tool Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 yubico-piv-tool In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 yubico-piv-tool Already fixed
SUSE Manager Proxy 4.0 yubico-piv-tool Already fixed
SUSE Manager Retail Branch Server 4.0 yubico-piv-tool Already fixed
SUSE Manager Server 4.0 yubico-piv-tool Already fixed
SUSE OpenStack Cloud 9 yubico-piv-tool Already fixed
SUSE OpenStack Cloud Crowbar 9 yubico-piv-tool Already fixed