ID CVE-2015-8370
Summary Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an "Off-by-two" or "Out of bounds overwrite" memory error.
References
Vulnerable Configurations
  • GNU GRUB 1.98
    cpe:2.3:a:gnu:grub2:1.98
  • GNU GRUB 1.99
    cpe:2.3:a:gnu:grub2:1.99
  • GNU GRUB 2.00
    cpe:2.3:a:gnu:grub2:2.00
  • GNU GRUB 2.01
    cpe:2.3:a:gnu:grub2:2.01
  • GNU GRUB 2.02
    cpe:2.3:a:gnu:grub2:2.02
  • Fedora Project Fedora 23
    cpe:2.3:o:fedoraproject:fedora:23
CVSS
Base: 6.9 (as of 29-03-2016 - 11:04)
Impact:
Exploitability:
CWE CWE-264
CAPEC
  • 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.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • 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.
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
nessus via4
  • NASL family Solaris Local Security Checks
    NASL id SOLARIS_JAN2016_SRU11_3_4_5_0.NASL
    description This Solaris system is missing necessary patches to address critical security updates : - Vulnerability in the Solaris component of Oracle Sun Systems Products Suite (subcomponent: Grub2). The supported version that is affected is 11. Difficult to exploit vulnerability requiring logon to Operating System. Successful attack of this vulnerability can result in unauthorized Operating System takeover including arbitrary code execution. (CVE-2015-8370) - Vulnerability in the Solaris component of Oracle Sun Systems Products Suite (subcomponent: Zones). The supported version that is affected is 11. Easily exploitable vulnerability requiring logon to Operating System plus additional, multiple logins to components. Successful attack of this vulnerability can escalate attacker privileges resulting in unauthorized read access to a subset of Solaris accessible data. (CVE-2016-0618)
    last seen 2019-02-21
    modified 2018-11-14
    plugin id 88003
    published 2016-01-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=88003
    title Oracle Solaris Critical Patch Update : jan2016_SRU11_3_4_5_0
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2015-2385-1.NASL
    description This update for grub2 provides the following fixes : A security issues with a bufferoverflow when reading username and password was fixed (bsc#956631, CVE-2015-8370) Also following bugs were fixed : - Fix buffer overflows when reading username and password. (bsc#956631, CVE-2015-8370) - Expand list of grub.cfg search path in PV Xen guests for systems installed on btrfs snapshots. (bsc#946148, bsc#952539) - Add grub.xen config searching path on boot partition. (bsc#884828) - Add linux16 and initrd16 to grub.xen. (bsc#884830) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 87668
    published 2015-12-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87668
    title SUSE SLED11 / SLES11 Security Update : grub2 (SUSE-SU-2015:2385-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2015-2386-1.NASL
    description This update for grub2 provides the following fixes : A security issues with a bufferoverflow when reading username and password was fixed (bsc#956631, CVE-2015-8370) Bugs fixed : - Expand list of grub.cfg search path in PV Xen guests for systems installed on btrfs snapshots. (bsc#946148, bsc#952539) - Add grub.xen config searching path on boot partition. (bsc#884828) - Add linux16 and initrd16 to grub.xen. (bsc#884830) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 87669
    published 2015-12-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87669
    title SUSE SLED11 / SLES11 Security Update : grub2 (SUSE-SU-2015:2386-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2015-2399-1.NASL
    description This update for grub2 provides the following fixes and enhancements : Security issue fixed : - Fix buffer overflows when reading username and password. (bsc#956631, CVE-2015-8370) Non security issues fixed : - Expand list of grub.cfg search path in PV Xen guests for systems installed on btrfs snapshots. (bsc#946148, bsc#952539) - Add --image switch to force zipl update to specific kernel. (bsc#928131) - Do not use shim lock protocol for reading PE header as it won't be available when secure boot is disabled. (bsc#943380) - Make firmware flaw condition be more precisely detected and add debug message for the case. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 87722
    published 2016-01-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87722
    title SUSE SLED12 / SLES12 Security Update : grub2 (SUSE-SU-2015:2399-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-10.NASL
    description - Fix buffer overflows when reading username and password. (bsc#956631, CVE-2015-8370) - Check MS-DOS header to find PE file header. (bsc#954126) - Use dirname for copying Xen kernel and initrd to esp. (bsc#955493) - Fix reading password by grub2-mkpasswd-pbdk2 without controlling tty. (bsc#954519) - Add luks, gcry_rijndael and gcry_sha1 to signed EFI image to support LUKS partition in default setup. (bsc#917427, bsc#955609) - Expand list of grub.cfg search path in PV Xen guests for systems installed on btrfs snapshots. (bsc#946148, bsc#952539) This update was imported from the SUSE:SLE-12-SP1:Update update project.
    last seen 2019-02-21
    modified 2016-01-07
    plugin id 87772
    published 2016-01-07
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87772
    title openSUSE Security Update : grub2 (openSUSE-2016-10)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-368.NASL
    description Hector Marco-Gisbert, from the Universitat Politècnica de València Cybersecurity Team, reported a buffer overflow in grub2 when checking password during bootup. For Debian 6 'Squeeze', this problem has been fixed in grub2 version 1.98+20100804-14+squeeze2. We recommend you to upgrade your grub2 packages. Learn more about the Debian Long Term Support (LTS) Project and how to apply these updates at: https://wiki.debian.org/LTS/ NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-07-06
    plugin id 87330
    published 2015-12-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87330
    title Debian DLA-368-1 : grub2 security update
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2015-2623.NASL
    description Updated grub2 packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. [Updated 27 January 2016] This advisory has been updated to document additional steps that need to be performed on BIOS-based systems after installing this update. No changes were made to the packages included in the advisory. The grub2 packages provide version 2 of the Grand Unified Bootloader (GRUB), a highly configurable and customizable bootloader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. A flaw was found in the way the grub2 handled backspace characters entered in username and password prompts. An attacker with access to the system console could use this flaw to bypass grub2 password protection and gain administrative access to the system. (CVE-2015-8370) This update also fixes the following bug : * When upgrading from Red Hat Enterprise Linux 7.1 and earlier, a configured boot password was not correctly migrated to the newly introduced user.cfg configuration files. This could possibly prevent system administrators from changing grub2 configuration during system boot even if they provided the correct password. This update corrects the password migration script and the incorrectly generated user.cfg file. (BZ#1290089) All grub2 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For this update to take effect on BIOS-based machines, grub2 needs to be reinstalled as documented in the 'Reinstalling GRUB 2 on BIOS-Based Machines' section of the Red Hat Enterprise Linux 7 System Administrator's Guide linked to in the References section. No manual action is needed on UEFI-based machines.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 87422
    published 2015-12-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87422
    title CentOS 7 : grub2 (CESA-2015:2623)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3421.NASL
    description Hector Marco and Ismael Ripoll, from Cybersecurity UPV Research Group, found an integer underflow vulnerability in Grub2, a popular bootloader. A local attacker can bypass the Grub2 authentication by inserting a crafted input as username or password. More information: http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html CVE-2015-8370
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 87428
    published 2015-12-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87428
    title Debian DSA-3421-1 : grub2 - security update
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2015-2387-1.NASL
    description - Fix buffer overflows when reading username and password. (bsc#956631, CVE-2015-8370) - Check MS-DOS header to find PE file header. (bsc#954126) - Use dirname for copying Xen kernel and initrd to esp. (bsc#955493) - Fix reading password by grub2-mkpasswd-pbdk2 without controlling tty. (bsc#954519) - Add luks, gcry_rijndael and gcry_sha1 to signed EFI image to support LUKS partition in default setup. (bsc#917427, bsc#955609) - Expand list of grub.cfg search path in PV Xen guests for systems installed on btrfs snapshots. (bsc#946148, bsc#952539) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 87670
    published 2015-12-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87670
    title SUSE SLED12 / SLES12 Security Update : grub2 (SUSE-SU-2015:2387-1)
  • NASL family F5 Networks Local Security Checks
    NASL id F5_BIGIP_SOL25901386.NASL
    description Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an 'Off-by-two' or 'Out of bounds overwrite' memory error.
    last seen 2019-02-21
    modified 2019-01-04
    plugin id 87904
    published 2016-01-14
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87904
    title F5 Networks BIG-IP : GRUB2 vulnerability (SOL25901386)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2015-CEBE5133E7.NASL
    description Fixes CVE-2015-8370. 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 seen 2019-02-21
    modified 2016-03-04
    plugin id 89415
    published 2016-03-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=89415
    title Fedora 23 : grub2-2.02-0.25.fc23 (2015-cebe5133e7)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2836-1.NASL
    description Hector Marco and Ismael Ripoll discovered that GRUB incorrectly handled the backspace key when configured to use authentication. A local attacker could use this issue to bypass GRUB password protection. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 87408
    published 2015-12-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87408
    title Ubuntu 12.04 LTS / 14.04 LTS / 15.04 / 15.10 : grub2 vulnerability (USN-2836-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2015-957.NASL
    description This update for grub2 fixes the following issue : Changes in grub2 : - CVE-2015-8370: Fix for overflow in grub_password_get and grub_user_get functions (bnc#956631)
    last seen 2019-02-21
    modified 2015-12-29
    plugin id 87630
    published 2015-12-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87630
    title openSUSE Security Update : grub2 (openSUSE-2015-957)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-2623.NASL
    description From Red Hat Security Advisory 2015:2623 : Updated grub2 packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. [Updated 27 January 2016] This advisory has been updated to document additional steps that need to be performed on BIOS-based systems after installing this update. No changes were made to the packages included in the advisory. The grub2 packages provide version 2 of the Grand Unified Bootloader (GRUB), a highly configurable and customizable bootloader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. A flaw was found in the way the grub2 handled backspace characters entered in username and password prompts. An attacker with access to the system console could use this flaw to bypass grub2 password protection and gain administrative access to the system. (CVE-2015-8370) This update also fixes the following bug : * When upgrading from Red Hat Enterprise Linux 7.1 and earlier, a configured boot password was not correctly migrated to the newly introduced user.cfg configuration files. This could possibly prevent system administrators from changing grub2 configuration during system boot even if they provided the correct password. This update corrects the password migration script and the incorrectly generated user.cfg file. (BZ#1290089) All grub2 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For this update to take effect on BIOS-based machines, grub2 needs to be reinstalled as documented in the 'Reinstalling GRUB 2 on BIOS-Based Machines' section of the Red Hat Enterprise Linux 7 System Administrator's Guide linked to in the References section. No manual action is needed on UEFI-based machines.
    last seen 2019-02-21
    modified 2018-07-24
    plugin id 87395
    published 2015-12-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87395
    title Oracle Linux 7 : grub2 (ELSA-2015-2623)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2015-90C27B6E91.NASL
    description Fixes CVE-2015-8370. 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 seen 2019-02-21
    modified 2016-03-04
    plugin id 89324
    published 2016-03-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=89324
    title Fedora 22 : grub2-2.02-0.18.fc22 (2015-90c27b6e91)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20151215_GRUB2_ON_SL7_X.NASL
    description A flaw was found in the way the grub2 handled backspace characters entered in username and password prompts. An attacker with access to the system console could use this flaw to bypass grub2 password protection and gain administrative access to the system. (CVE-2015-8370) This update also fixes the following bug : - When upgrading from Scientific Linux 7.1 and earlier, a configured boot password was not correctly migrated to the newly introduced user.cfg configuration files. This could possibly prevent system administrators from changing grub2 configuration during system boot even if they provided the correct password. This update corrects the password migration script and the incorrectly generated user.cfg file.
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 87586
    published 2015-12-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87586
    title Scientific Linux Security Update : grub2 on SL7.x x86_64
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2015-2623.NASL
    description Updated grub2 packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. [Updated 27 January 2016] This advisory has been updated to document additional steps that need to be performed on BIOS-based systems after installing this update. No changes were made to the packages included in the advisory. The grub2 packages provide version 2 of the Grand Unified Bootloader (GRUB), a highly configurable and customizable bootloader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. A flaw was found in the way the grub2 handled backspace characters entered in username and password prompts. An attacker with access to the system console could use this flaw to bypass grub2 password protection and gain administrative access to the system. (CVE-2015-8370) This update also fixes the following bug : * When upgrading from Red Hat Enterprise Linux 7.1 and earlier, a configured boot password was not correctly migrated to the newly introduced user.cfg configuration files. This could possibly prevent system administrators from changing grub2 configuration during system boot even if they provided the correct password. This update corrects the password migration script and the incorrectly generated user.cfg file. (BZ#1290089) All grub2 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For this update to take effect on BIOS-based machines, grub2 needs to be reinstalled as documented in the 'Reinstalling GRUB 2 on BIOS-Based Machines' section of the Red Hat Enterprise Linux 7 System Administrator's Guide linked to in the References section. No manual action is needed on UEFI-based machines.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 87397
    published 2015-12-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87397
    title RHEL 7 : grub2 (RHSA-2015:2623)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201512-03.NASL
    description The remote host is affected by the vulnerability described in GLSA-201512-03 (GRUB: Authentication bypass) An integer underflow in GRUB’s username/password authentication code has been discovered. Impact : An attacker with access to the system console may bypass the username prompt by entering a sequence of backspace characters, allowing them e.g. to get full access to GRUB’s console or to load a customized kernel. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2015-12-21
    plugin id 87516
    published 2015-12-21
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87516
    title GLSA-201512-03 : GRUB: Authentication bypass
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2015-351-01.NASL
    description New grub packages are available for Slackware 14.1 and -current to fix a security issue.
    last seen 2019-02-21
    modified 2015-12-18
    plugin id 87477
    published 2015-12-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=87477
    title Slackware 14.1 / current : grub (SSA:2015-351-01)
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2016-0012_GRUB2.NASL
    description An update of the grub2 package has been released.
    last seen 2019-02-08
    modified 2019-02-07
    plugin id 121648
    published 2019-02-07
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=121648
    title Photon OS 1.0: Grub2 PHSA-2016-0012
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2016-0012.NASL
    description An update of [ linux , wget , vim , grub2 , zookeeper , nginx , dnsmasq , haproxy ] packages for PhotonOS has been released.
    last seen 2019-02-21
    modified 2019-02-07
    plugin id 111846
    published 2018-08-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111846
    title Photon OS 1.0: Dnsmasq / Grub2 / Haproxy / Linux / Nginx / Vim / Wget / Zookeeper PHSA-2016-0012 (deprecated)
redhat via4
advisories
bugzilla
id 1290089
title Grub password broken by update from RHEL7.1 to RHEL7.2
oval
AND
  • OR
    • comment Red Hat Enterprise Linux 7 Client is installed
      oval oval:com.redhat.rhsa:tst:20140675001
    • comment Red Hat Enterprise Linux 7 Server is installed
      oval oval:com.redhat.rhsa:tst:20140675002
    • comment Red Hat Enterprise Linux 7 Workstation is installed
      oval oval:com.redhat.rhsa:tst:20140675003
    • comment Red Hat Enterprise Linux 7 ComputeNode is installed
      oval oval:com.redhat.rhsa:tst:20140675004
  • OR
    • AND
      • comment grub2 is earlier than 1:2.02-0.33.el7_2
        oval oval:com.redhat.rhsa:tst:20152623005
      • comment grub2 is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152401006
    • AND
      • comment grub2-efi is earlier than 1:2.02-0.33.el7_2
        oval oval:com.redhat.rhsa:tst:20152623009
      • comment grub2-efi is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152401012
    • AND
      • comment grub2-efi-modules is earlier than 1:2.02-0.33.el7_2
        oval oval:com.redhat.rhsa:tst:20152623011
      • comment grub2-efi-modules is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152401010
    • AND
      • comment grub2-tools is earlier than 1:2.02-0.33.el7_2
        oval oval:com.redhat.rhsa:tst:20152623007
      • comment grub2-tools is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20152401008
rhsa
id RHSA-2015:2623
released 2015-12-15
severity Moderate
title RHSA-2015:2623: grub2 security and bug fix update (Moderate)
rpms
  • grub2-1:2.02-0.33.el7_2
  • grub2-efi-1:2.02-0.33.el7_2
  • grub2-efi-modules-1:2.02-0.33.el7_2
  • grub2-tools-1:2.02-0.33.el7_2
refmap via4
bid 79358
bugtraq 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]
confirm
debian DSA-3421
fedora
  • FEDORA-2015-90c27b6e91
  • FEDORA-2015-cebe5133e7
fulldisc 20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]
gentoo GLSA-201512-03
misc
mlist [oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]
sectrack 1034422
suse
  • SUSE-SU-2015:2385
  • SUSE-SU-2015:2386
  • SUSE-SU-2015:2387
  • SUSE-SU-2015:2399
  • openSUSE-SU-2015:2375
  • openSUSE-SU-2015:2392
  • openSUSE-SU-2016:0036
ubuntu USN-2836-1
the hacker news via4
id THN:960C1B9817E3CB5C4AF1E8867B27BE72
last seen 2018-01-27
modified 2015-12-17
published 2015-12-16
reporter Swati Khandelwal
source https://thehackernews.com/2015/12/hack-linux-grub-password.html
title You can Hack into a Linux Computer just by pressing 'Backspace' 28 times
Last major update 07-12-2016 - 13:27
Published 16-12-2015 - 16:59
Last modified 09-10-2018 - 15:58
Back to Top