- Issued:
- 2015-07-23
- Updated:
- 2015-07-23
RHSA-2015:1482 - Important: libuser security update
Synopsis
Important: libuser security update
Type/Severity
Security Advisory Important
Topic
Updated libuser packages that fix two security issues are now available for Red Hat Enterprise Linux 6.
Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
Description
The libuser library implements a standardized interface for manipulating and administering user and group accounts. Sample applications that are modeled after applications from the shadow password suite (shadow-utils) are included in these packages.
Two flaws were found in the way the libuser library handled the /etc/passwd file. A local attacker could use an application compiled against libuser (for example, userhelper) to manipulate the /etc/passwd file, which could result in a denial of service or possibly allow the attacker to escalate their privileges to root. (CVE-2015-3245, CVE-2015-3246)
Red Hat would like to thank Qualys for reporting these issues.
All libuser users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.
Solution
Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 6.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 6.7 | i386 |
| Red Hat Enterprise Linux for Scientific Computing | 6 | x86_64 |
| Red Hat Enterprise Linux for SAP Solutions for x86_64 - Extended Update Support | 6.7 | x86_64 |
| Red Hat Enterprise Linux for Power, big endian | 6 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 6.7 | ppc64 |
| Red Hat Enterprise Linux for IBM z Systems | 6 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 6.7 | s390x |
| Red Hat Enterprise Linux Workstation | 6 | x86_64 |
| Red Hat Enterprise Linux Workstation | 6 | i386 |
| Red Hat Enterprise Linux Server | 6 | x86_64 |
| Red Hat Enterprise Linux Server | 6 | i386 |
| Red Hat Enterprise Linux Server from RHUI | 6 | x86_64 |
| Red Hat Enterprise Linux Server from RHUI | 6 | i386 |
| Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support | 6 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Update Support from RHUI | 6.7 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Update Support from RHUI | 6.7 | i386 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 6 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 6 | i386 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension | 6 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension | 6 | i386 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) | 6 | s390x |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) | 6 | s390x |
| Red Hat Enterprise Linux EUS Compute Node | 6.7 | x86_64 |
| Red Hat Enterprise Linux Desktop | 6 | x86_64 |
| Red Hat Enterprise Linux Desktop | 6 | i386 |
Updated Packages
- libuser-debuginfo-0.56.13-8.el6_7.ppc64.rpm
- libuser-0.56.13-8.el6_7.src.rpm
- libuser-devel-0.56.13-8.el6_7.ppc64.rpm
- libuser-0.56.13-8.el6_7.s390x.rpm
- libuser-python-0.56.13-8.el6_7.ppc64.rpm
- libuser-0.56.13-8.el6_7.ppc.rpm
- libuser-python-0.56.13-8.el6_7.i686.rpm
- libuser-python-0.56.13-8.el6_7.s390x.rpm
- libuser-0.56.13-8.el6_7.x86_64.rpm
- libuser-debuginfo-0.56.13-8.el6_7.ppc.rpm
- libuser-devel-0.56.13-8.el6_7.i686.rpm
- libuser-devel-0.56.13-8.el6_7.x86_64.rpm
- libuser-debuginfo-0.56.13-8.el6_7.i686.rpm
- libuser-devel-0.56.13-8.el6_7.ppc.rpm
- libuser-debuginfo-0.56.13-8.el6_7.s390.rpm
- libuser-0.56.13-8.el6_7.i686.rpm
- libuser-python-0.56.13-8.el6_7.x86_64.rpm
- libuser-devel-0.56.13-8.el6_7.s390x.rpm
- libuser-0.56.13-8.el6_7.s390.rpm
- libuser-0.56.13-8.el6_7.ppc64.rpm
- libuser-devel-0.56.13-8.el6_7.s390.rpm
- libuser-debuginfo-0.56.13-8.el6_7.s390x.rpm
- libuser-debuginfo-0.56.13-8.el6_7.x86_64.rpm
Fixes
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.