ID CVE-2016-0634
Summary The expansion of '\h' in the prompt string in bash 4.3 allows remote authenticated users to execute arbitrary code via shell metacharacters placed in 'hostname' of a machine.
References
Vulnerable Configurations
  • GNU Bourne-Again SHellbash (GNU Bash) 4.3
    cpe:2.3:a:gnu:bash:4.3
CVSS
Base: 6.0
Impact:
Exploitability:
CWE CWE-78
CAPEC
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
  • Command Delimiters
    An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or a blacklist input validation, as opposed to whitelist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or blacklist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
  • Exploiting Multiple Input Interpretation Layers
    An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.
  • Argument Injection
    An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.
  • OS Command Injection
    In this type of an attack, an adversary injects operating system commands into existing application functions. An application that uses untrusted input to build command strings is vulnerable. An adversary can leverage OS command injection in an application to elevate privileges, execute arbitrary commands and compromise the underlying operating system.
nessus via4
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2017-0040_BASH.NASL
    description An update of the bash package has been released.
    last seen 2019-02-08
    modified 2019-02-07
    plugin id 121741
    published 2019-02-07
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=121741
    title Photon OS 1.0: Bash PHSA-2017-0040
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-EDA100D886.NASL
    description Security fix for CVE-2016-0634. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-01
    plugin id 94876
    published 2016-11-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94876
    title Fedora 25 : bash (2016-eda100d886)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-A822B472C4.NASL
    description Security fix for CVE-2016-0634. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-01
    plugin id 93728
    published 2016-09-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=93728
    title Fedora 24 : bash (2016-a822b472c4)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2016-62E6C462EF.NASL
    description Security fix for CVE-2016-0634. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-02-01
    plugin id 93725
    published 2016-09-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=93725
    title Fedora 23 : bash (2016-62e6c462ef)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201612-39.NASL
    description The remote host is affected by the vulnerability described in GLSA-201612-39 (Bash: Arbitrary code execution) A vulnerability was found in the way Bash expands $HOSTNAME. Injecting malicious code into $HOSTNAME could cause it to run each time Bash expands \\h in the prompt string. Impact : A remote attacker controlling the system’s hostname (i.e. via DHCP) could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2018-01-26
    plugin id 95742
    published 2016-12-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=95742
    title GLSA-201612-39 : Bash: Arbitrary code execution
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2016-2872-1.NASL
    description This update for bash fixes the following issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt (bsc#1000396) - CVE-2014-6277: More troubles with functions (bsc#898812, bsc#1001759) - CVE-2014-6278: Code execution after original 6271 fix (bsc#898884) 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 95282
    published 2016-11-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=95282
    title SUSE SLED12 / SLES12 Security Update : bash (SUSE-SU-2016:2872-1) (Shellshock)
  • NASL family OracleVM Local Security Checks
    NASL id ORACLEVM_OVMSA-2017-0050.NASL
    description The remote OracleVM system is missing necessary patches to address critical security updates : - Fix signal handling in read builtin Resolves: #1421926 - CVE-2016-9401 - Fix crash when '-' is passed as second sign to popd Resolves: #1396383 - CVE-2016-7543 - Fix for arbitrary code execution via SHELLOPTS+PS4 variables Resolves: #1379630 - CVE-2016-0634 - Fix for arbitrary code execution via malicious hostname Resolves: #1377613 - Avoid crash in parameter expansion while expanding long strings Resolves: #1359142 - Stop reading input when SIGHUP is received Resolves: #1325753 - Bash leaks memory while doing pattern removal in parameter expansion Resolves: #1283829 - Fix a race condition in saving bash history on shutdown Resolves: #1325753 - Bash shouldn't ignore bash --debugger without a dbger installed Related: #1260568 - Wrong parsing inside for loop and brackets Resolves: #1207803 - IFS incorrectly splitting herestrings Resolves: #1250070 - Case in a for loop in a subshell causes a syntax error Resolves: #1240994 - Bash shouldn't ignore bash --debugger without a dbger installed Resolves: #1260568 - Bash leaks memory when repeatedly doing a pattern-subst Resolves: #1207042 - Bash hangs when a signal is received Resolves: #868846
    last seen 2019-02-21
    modified 2018-07-25
    plugin id 99077
    published 2017-03-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=99077
    title OracleVM 3.3 / 3.4 : bash (OVMSA-2017-0050)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-1374.NASL
    description This update for bash fixes the following issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt (bsc#1000396) - CVE-2014-6277: More troubles with functions (bsc#898812, bsc#1001759) - CVE-2014-6278: Code execution after original 6271 fix (bsc#898884) This update was imported from the SUSE:SLE-12:Update update project.
    last seen 2019-02-21
    modified 2017-01-24
    plugin id 95529
    published 2016-12-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=95529
    title openSUSE Security Update : bash (openSUSE-2016-1374) (Shellshock)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20170321_BASH_ON_SL6_X.NASL
    description Security Fix(es) : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401)
    last seen 2019-02-21
    modified 2018-12-27
    plugin id 99214
    published 2017-04-06
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=99214
    title Scientific Linux Security Update : bash on SL6.x i386/x86_64
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2017-0040.NASL
    description An update of [openjdk,openjre,bash,libtar,glibc,libgcrypt,strongswan,unzip] packages for PhotonOS has been released.
    last seen 2019-02-21
    modified 2019-02-07
    plugin id 111889
    published 2018-08-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111889
    title Photon OS 1.0: Bash / Glibc / Libgcrypt / Libtar / Openjdk / Openjre / Strongswan / Unzip PHSA-2017-0040 (deprecated)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2017-0725.NASL
    description From Red Hat Security Advisory 2017:0725 : An update for bash is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.
    last seen 2019-02-21
    modified 2018-07-25
    plugin id 99071
    published 2017-03-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=99071
    title Oracle Linux 6 : bash (ELSA-2017-0725)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20170801_BASH_ON_SL7_X.NASL
    description Security Fix(es) : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401)
    last seen 2019-02-21
    modified 2018-12-27
    plugin id 102638
    published 2017-08-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=102638
    title Scientific Linux Security Update : bash on SL7.x x86_64
  • NASL family Amazon Linux Local Security Checks
    NASL id ALA_ALAS-2017-878.NASL
    description popd controlled free : A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session.(CVE-2016-9401) Arbitrary code execution via malicious hostname : An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances.(CVE-2016-0634) Specially crafted SHELLOPTS+PS4 variables allows command substitution : An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543)
    last seen 2019-02-21
    modified 2018-04-18
    plugin id 102866
    published 2017-09-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=102866
    title Amazon Linux AMI : bash (ALAS-2017-878)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-3294-1.NASL
    description Bernd Dietzel discovered that Bash incorrectly expanded the hostname when displaying the prompt. If a remote attacker were able to modify a hostname, this flaw could be exploited to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-0634) It was discovered that Bash incorrectly handled the SHELLOPTS and PS4 environment variables. A local attacker could use this issue to execute arbitrary code with root privileges. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7543) It was discovered that Bash incorrectly handled the popd command. A remote attacker could possibly use this issue to bypass restricted shells. (CVE-2016-9401) It was discovered that Bash incorrectly handled path autocompletion. A local attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 17.04. (CVE-2017-5932). 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 100268
    published 2017-05-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=100268
    title Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : bash vulnerabilities (USN-3294-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2018-1398-2.NASL
    description This update for bash fixes the following issues : Security issues fixed : CVE-2016-7543: A code execution possibility via SHELLOPTS+PS4 variable was fixed (bsc#1001299) CVE-2016-0634: Arbitrary code execution via malicious hostname was fixed (bsc#1000396) Non-security issues fixed: Fix repeating self-calling of traps due the combination of a non-interactive shell, a trap handler for SIGINT, an external process in the trap handler, and a SIGINT within the trap after the external process runs. (bsc#1086247) 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 2018-12-01
    plugin id 118257
    published 2018-10-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=118257
    title SUSE SLES12 Security Update : bash (SUSE-SU-2018:1398-2)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2018-516.NASL
    description This update for bash fixes the following issues : Security issues fixed : - CVE-2016-7543: A code execution possibility via SHELLOPTS+PS4 variable was fixed (bsc#1001299) - CVE-2016-0634: Arbitrary code execution via malicious hostname was fixed (bsc#1000396) Non-security issues fixed : - Fix repeating self-calling of traps due the combination of a non-interactive shell, a trap handler for SIGINT, an external process in the trap handler, and a SIGINT within the trap after the external process runs. (bsc#1086247) This update was imported from the SUSE:SLE-12-SP2:Update update project.
    last seen 2019-02-21
    modified 2018-05-25
    plugin id 110106
    published 2018-05-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=110106
    title openSUSE Security Update : bash (openSUSE-2018-516)
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2017-251-01.NASL
    description New bash packages are available for Slackware 13.1, 13.37, 14.0, 14.1, and 14.2 to fix security issues.
    last seen 2019-02-21
    modified 2017-09-21
    plugin id 103089
    published 2017-09-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103089
    title Slackware 13.1 / 13.37 / 14.0 / 14.1 / 14.2 : bash (SSA:2017-251-01)
  • NASL family Huawei Local Security Checks
    NASL id EULEROS_SA-2017-1164.NASL
    description According to the versions of the bash package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS 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 2018-11-14
    plugin id 103002
    published 2017-09-08
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103002
    title EulerOS 2.0 SP2 : bash (EulerOS-SA-2017-1164)
  • NASL family Huawei Local Security Checks
    NASL id EULEROS_SA-2017-1163.NASL
    description According to the versions of the bash package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS 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 2018-11-14
    plugin id 103001
    published 2017-09-08
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103001
    title EulerOS 2.0 SP1 : bash (EulerOS-SA-2017-1163)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2017-0725.NASL
    description An update for bash is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.
    last seen 2019-02-21
    modified 2017-03-27
    plugin id 97959
    published 2017-03-27
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=97959
    title CentOS 6 : bash (CESA-2017:0725)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-0302-1.NASL
    description This update for bash fixes the following issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables. (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt. (bsc#1000396) The following bugs were fixed : - bsc#971410: Scripts could terminate unexpectedly due to mishandled recursive traps. - bsc#959755: Clarify that the files /etc/profile as well as /etc/bash.bashrc may source other files as well even if the bash does not. 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 2018-11-30
    plugin id 96868
    published 2017-01-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=96868
    title SUSE SLES11 Security Update : bash (SUSE-SU-2017:0302-1)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2016-1260.NASL
    description This update for bash fixes the following security issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt (bsc#1000396) This update also fixes the following bugs : - fix a crash found during debugging boo#971410 - boo#976776: crash if ~/.bash_history is empty (boo#976776)
    last seen 2019-02-21
    modified 2017-01-23
    plugin id 94530
    published 2016-11-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=94530
    title openSUSE Security Update : bash (openSUSE-2016-1260)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2017-1931.NASL
    description An update for bash is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 102744
    published 2017-08-25
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=102744
    title CentOS 7 : bash (CESA-2017:1931)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2017-0725.NASL
    description An update for bash is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.
    last seen 2019-02-21
    modified 2018-11-26
    plugin id 97883
    published 2017-03-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=97883
    title RHEL 6 : bash (RHSA-2017:0725)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2017-1931.NASL
    description An update for bash is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.
    last seen 2019-02-21
    modified 2018-11-26
    plugin id 102105
    published 2017-08-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=102105
    title RHEL 7 : bash (RHSA-2017:1931)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2017-1931.NASL
    description From Red Hat Security Advisory 2017:1931 : An update for bash is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.
    last seen 2019-02-21
    modified 2018-07-25
    plugin id 102289
    published 2017-08-09
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=102289
    title Oracle Linux 7 : bash (ELSA-2017-1931)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2018-1398-1.NASL
    description This update for bash fixes the following issues: Security issues fixed : - CVE-2016-7543: A code execution possibility via SHELLOPTS+PS4 variable was fixed (bsc#1001299) - CVE-2016-0634: Arbitrary code execution via malicious hostname was fixed (bsc#1000396) Non-security issues fixed : - Fix repeating self-calling of traps due the combination of a non-interactive shell, a trap handler for SIGINT, an external process in the trap handler, and a SIGINT within the trap after the external process runs. (bsc#1086247) 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 2018-12-01
    plugin id 110092
    published 2018-05-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=110092
    title SUSE SLED12 / SLES12 Security Update : bash (SUSE-SU-2018:1398-1)
redhat via4
advisories
  • rhsa
    id RHSA-2017:0725
  • rhsa
    id RHSA-2017:1931
rpms
  • bash-0:4.1.2-48.el6
  • bash-doc-0:4.1.2-48.el6
  • bash-0:4.2.46-28.el7
  • bash-doc-0:4.2.46-28.el7
refmap via4
bid 92999
confirm https://bugzilla.redhat.com/show_bug.cgi?id=1377613
gentoo GLSA-201612-39
mlist
  • [oss-security] 20160916 CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20160916 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20160918 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20160919 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20160920 Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20160927 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20160929 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20161007 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20161010 RE: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
  • [oss-security] 20161010 Re: Re: CVE-2016-0634 -- bash prompt expanding $HOSTNAME
Last major update 28-08-2017 - 11:29
Published 28-08-2017 - 11:29
Last modified 04-01-2018 - 21:30
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