Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 521
Alerts This Week
Warning Icon 1 521

Red Hat: RHSA-2015-2505-01 Moderate: ABRT Libreport Exploit Fix

red hat
Calendar Grey November 23, 2015
Scroller Redhat
Standard security enhancement for abrt alongside libreport to tackle significant vulnerabilities within Red Hat Enterprise Linux 7.
Updated abrt and libreport packages that fix three security issues are now available for Red Hat Enterprise Linux 7

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

Summary

ABRT (Automatic Bug Reporting Tool) is a tool to help users to detect defects in applications and to create a bug report with all the information needed by a maintainer to fix it. It uses a plug-in system to extend its functionality. libreport provides an API for reporting different problems in applications to different bug targets, such as Bugzilla, FTP, and Trac.
It was found that the ABRT debug information installer (abrt-action-install-debuginfo-to-abrt-cache) did not use temporary directories in a secure way. A local attacker could use the flaw to create symbolic links and files at arbitrary locations as the abrt user. (CVE-2015-5273)
It was discovered that the kernel-invoked coredump processor provided by ABRT did not handle symbolic links correctly when writing core dumps of ABRT programs to the ABRT dump directory (/var/spool/abrt). A local attacker with write access to an ABRT problem directory could use this flaw to escalate their privileges. (CVE-2015-5287)
It was found that ABRT may have exposed unintended information to Red Hat Bugzilla during crash reporting. A bug in the libreport library caused changes made by a user in files included in a crash report to be discarded. As a result, Red Hat Bugzilla attachments may contain data that was not intended to be made public, including host names, IP addresses, or command line options. (CVE-2015-5302)
This flaw did not affect default installations of ABRT on Red Hat Enterprise Linux as they do not post data to Red Hat Bugzilla. This feature can however be enabled, potentially impacting modified ABRT instances.
As a precaution, Red Hat has identified bugs filed by such non-default Red Hat Enterprise Linux users of ABRT and marked them private.
Red Hat would like to thank Philip Pettersson of Samsung for reporting the CVE-2015-5273 and CVE-2015-5287 issues. The CVE-2015-5302 issue was discovered by Bastien Nocera of Red Hat.
All users of abrt and libreport are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory red hat moderate impact local exploit bug reporting abrt libreport

References

https://access.redhat.com/security/cve/CVE-2015-5273 https://access.redhat.com/security/cve/CVE-2015-5287 https://access.redhat.com/security/cve/CVE-2015-5302 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: abrt-2.1.11-35.el7.src.rpm libreport-2.1.11-31.el7.src.rpm
x86_64: abrt-2.1.11-35.el7.x86_64.rpm abrt-addon-ccpp-2.1.11-35.el7.x86_64.rpm abrt-addon-kerneloops-2.1.11-35.el7.x86_64.rpm abrt-addon-pstoreoops-2.1.11-35.el7.x86_64.rpm abrt-addon-python-2.1.11-35.el7.x86_64.rpm abrt-addon-vmcore-2.1.11-35.el7.x86_64.rpm abrt-addon-xorg-2.1.11-35.el7.x86_64.rpm abrt-cli-2.1.11-35.el7.x86_64.rpm abrt-console-notification-2.1.11-35.el7.x86_64.rpm abrt-dbus-2.1.11-35.el7.x86_64.rpm abrt-debuginfo-2.1.11-35.el7.i686.rpm abrt-debuginfo-2.1.11-35.el7.x86_64.rpm abrt-desktop-2.1.11-35.el7.x86_64.rpm abrt-gui-2.1.11-35.el7.x86_64.rpm abrt-gui-libs-2.1.11-35.el7.i686.rpm abrt-gui-libs-2.1.11-35.el7.x86_64.rpm abrt-libs-2.1.11-35.el7.i686.rpm abrt-libs-2.1.11-35.el7.x86_64.rpm abrt-python-2.1.11-35.el7.x86_64.rpm abrt-tui-2.1.11-35.el7.x86_64.rpm libreport-2.1.11-31.el7.i686.rpm libreport-2.1.11-31.el7.x86_64.rpm libreport-anaconda-2.1.11-31.el7.x86_64.rpm libreport-cli-2.1.11-31.el7.x86_64.rpm libreport-debuginfo-2.1.11-31.el7.i686.rpm libreport-debuginfo-2.1.11-31.el7.x86_64.rpm libreport-filesystem-2.1.11-31.el7.x86_64.rpm libreport-gtk-2.1.11-31.el7.i686.rpm libreport-gtk-2.1.11-31.el7.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2015:2505-01
Product: Red Hat Enterprise Linux
Advisory URL:
Issue date: 2015-11-23

Topic

Updated abrt and libreport packages that fix three security issues are nowavailable for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having Moderate securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory red hat moderate impact local exploit bug reporting abrt libreport

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Bugs Fixed

1262252 - CVE-2015-5273 abrt: Insecure temporary directory usage in abrt-action-install-debuginfo-to-abrt-cache

1266837 - CVE-2015-5287 abrt: incorrect permissions on /var/spool/abrt

1270903 - CVE-2015-5302 libreport: Possible private data leak in Bugzilla bugs opened by ABRT

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.