Vulnerabilities > CVE-2015-5287 - Link Following vulnerability in Redhat products

047910
CVSS 6.9 - MEDIUM
Attack vector
LOCAL
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
redhat
CWE-59
nessus
exploit available
metasploit

Summary

The abrt-hook-ccpp help program in Automatic Bug Reporting Tool (ABRT) before 2.7.1 allows local users with certain permissions to gain privileges via a symlink attack on a file with a predictable name, as demonstrated by /var/tmp/abrt/abrt-hax-coredump or /var/spool/abrt/abrt-hax-coredump.

Vulnerable Configurations

Part Description Count
Application
Redhat
66
OS
Redhat
4

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Symlink Attack
    An attacker positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name. The endpoint file may be either output or input. If the file is output, the result is that the endpoint is modified, instead of a file at the intended location. Modifications to the endpoint file may include appending, overwriting, corrupting, changing permissions, or other modifications. In some variants of this attack the attacker may be able to control the change to a file while in other cases they cannot. The former is especially damaging since the attacker may be able to grant themselves increased privileges or insert false information, but the latter can also be damaging as it can expose sensitive information or corrupt or destroy vital system or application files. Alternatively, the endpoint file may serve as input to the targeted application. This can be used to feed malformed input into the target or to cause the target to process different information, possibly allowing the attacker to control the actions of the target or to cause the target to expose information to the attacker. Moreover, the actions taken on the endpoint file are undertaken with the permissions of the targeted user or application, which may exceed the permissions that the attacker would normally have.
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Exploit-Db

  • descriptionCentos 7.1/Fedora 22 - abrt Local Root. CVE-2015-5273,CVE-2015-5287,CVE-CVE-2015-5273,CVE-CVE-2015-5287. Local exploits for multiple platform
    idEDB-ID:38835
    last seen2016-02-04
    modified2015-12-01
    published2015-12-01
    reporterrebel
    sourcehttps://www.exploit-db.com/download/38835/
    titleCentos 7.1/Fedora 22 - abrt Local Root
  • idEDB-ID:47421
    last seen2019-09-25
    modified2019-09-25
    published2019-09-25
    reporterExploit-DB
    sourcehttps://www.exploit-db.com/download/47421
    titleABRT - sosreport Privilege Escalation (Metasploit)
  • descriptionRHEL 7.0/7.1 - abrt/sosreport Local Root. CVE-2015-5287. Local exploit for linux platform
    fileexploits/linux/local/38832.py
    idEDB-ID:38832
    last seen2016-02-04
    modified2015-12-01
    platformlinux
    port
    published2015-12-01
    reporterrebel
    sourcehttps://www.exploit-db.com/download/38832/
    titleRHEL 7.0/7.1 - abrt/sosreport Local Root
    typelocal

Metasploit

descriptionThis module attempts to gain root privileges on RHEL systems with a vulnerable version of Automatic Bug Reporting Tool (ABRT) configured as the crash handler. `sosreport` uses an insecure temporary directory, allowing local users to write to arbitrary files (CVE-2015-5287). This module uses a symlink attack on `/var/tmp/abrt/cc-*$pid/` to overwrite the `modprobe` path in `/proc/sys/kernel/modprobe`, resulting in root privileges. Waiting for `sosreport` could take a few minutes. This module has been tested successfully on: abrt 2.1.11-12.el7 on RHEL 7.0 x86_64; and abrt 2.1.11-19.el7 on RHEL 7.1 x86_64.
idMSF:EXPLOIT/LINUX/LOCAL/ABRT_SOSREPORT_PRIV_ESC
last seen2020-06-01
modified2019-05-29
published2019-04-20
references
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/linux/local/abrt_sosreport_priv_esc.rb
titleABRT sosreport Privilege Escalation

Nessus

  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20151123_ABRT_AND_LIBREPORT_ON_SL7_X.NASL
    descriptionIt 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 Scientific Linux as they do not post data to Red Hat Bugzilla. This feature can however be enabled, potentially impacting modified ABRT instances. With this update Scientific Linux will no longer publish the rhel-autoreport tools.
    last seen2020-03-18
    modified2015-12-22
    plugin id87580
    published2015-12-22
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87580
    titleScientific Linux Security Update : abrt and libreport on SL7.x x86_64 (20151123)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2015-2505.NASL
    descriptionUpdated abrt and libreport packages that fix three security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate 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. 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id87160
    published2015-12-02
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87160
    titleCentOS 7 : abrt / libreport (CESA-2015:2505)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2015-79C1758468.NASL
    description - CVE-2015-5287: ignore crashes of abrt tools if DebugLevel = 0 - CVE-2015-5273: create own random temporary directory - make crashes of processes with locked memory not-reportable - detect xorg backtraces from journald - fix the coredumpctl integration tool Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-03-04
    plugin id89292
    published2016-03-04
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89292
    titleFedora 23 : abrt-2.7.1-1.fc23 (2015-79c1758468)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2015-2505.NASL
    descriptionFrom Red Hat Security Advisory 2015:2505 : Updated abrt and libreport packages that fix three security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate 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. 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id87096
    published2015-11-30
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87096
    titleOracle Linux 7 : abrt / libreport (ELSA-2015-2505)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2015-2505.NASL
    descriptionUpdated abrt and libreport packages that fix three security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate 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. 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id87046
    published2015-11-24
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87046
    titleRHEL 7 : abrt and libreport (RHSA-2015:2505)

Packetstorm

Redhat

advisories
rhsa
idRHSA-2015:2505
rpms
  • abrt-0:2.1.11-35.el7
  • abrt-addon-ccpp-0:2.1.11-35.el7
  • abrt-addon-kerneloops-0:2.1.11-35.el7
  • abrt-addon-pstoreoops-0:2.1.11-35.el7
  • abrt-addon-python-0:2.1.11-35.el7
  • abrt-addon-upload-watch-0:2.1.11-35.el7
  • abrt-addon-vmcore-0:2.1.11-35.el7
  • abrt-addon-xorg-0:2.1.11-35.el7
  • abrt-cli-0:2.1.11-35.el7
  • abrt-console-notification-0:2.1.11-35.el7
  • abrt-dbus-0:2.1.11-35.el7
  • abrt-debuginfo-0:2.1.11-35.el7
  • abrt-desktop-0:2.1.11-35.el7
  • abrt-devel-0:2.1.11-35.el7
  • abrt-gui-0:2.1.11-35.el7
  • abrt-gui-devel-0:2.1.11-35.el7
  • abrt-gui-libs-0:2.1.11-35.el7
  • abrt-libs-0:2.1.11-35.el7
  • abrt-python-0:2.1.11-35.el7
  • abrt-python-doc-0:2.1.11-35.el7
  • abrt-retrace-client-0:2.1.11-35.el7
  • abrt-tui-0:2.1.11-35.el7
  • libreport-0:2.1.11-31.el7
  • libreport-anaconda-0:2.1.11-31.el7
  • libreport-cli-0:2.1.11-31.el7
  • libreport-compat-0:2.1.11-31.el7
  • libreport-debuginfo-0:2.1.11-31.el7
  • libreport-devel-0:2.1.11-31.el7
  • libreport-filesystem-0:2.1.11-31.el7
  • libreport-gtk-0:2.1.11-31.el7
  • libreport-gtk-devel-0:2.1.11-31.el7
  • libreport-newt-0:2.1.11-31.el7
  • libreport-plugin-bugzilla-0:2.1.11-31.el7
  • libreport-plugin-kerneloops-0:2.1.11-31.el7
  • libreport-plugin-logger-0:2.1.11-31.el7
  • libreport-plugin-mailx-0:2.1.11-31.el7
  • libreport-plugin-reportuploader-0:2.1.11-31.el7
  • libreport-plugin-rhtsupport-0:2.1.11-31.el7
  • libreport-plugin-ureport-0:2.1.11-31.el7
  • libreport-python-0:2.1.11-31.el7
  • libreport-rhel-0:2.1.11-31.el7
  • libreport-rhel-anaconda-bugzilla-0:2.1.11-31.el7
  • libreport-rhel-bugzilla-0:2.1.11-31.el7
  • libreport-web-0:2.1.11-31.el7
  • libreport-web-devel-0:2.1.11-31.el7

Saint

descriptionABRT/sosreport privilege elevation
titleabrt_sosreport_local_root
typelocal