CVE-2014-6271: GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
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Vulnerability summary
CVE-2014-6271 is a high (CVSS 10.0) OS Command Injection vulnerability in GNU Bourne-Again Shell (Bash). It is known to be exploited: CISA lists it, first on 28-01-2022. EPSS estimates a 100.00% chance of exploitation in the next 30 days, higher than 99.9% of scored vulnerabilities. 39 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 2 · Duplicates 3 · Related 1Timeline
- 24-09-2014PublishedVulnerability first disclosed.
- 28-01-2022Added to CISA KEVGNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability
- 28-07-2022CISA remediation dueApply updates per vendor instructions.
- 22-10-2025Last modifiedVulnerability information updated.
Description
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.
CVSS metrics
5 scores · 4 sources · 2 versions- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
100.00%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 100.00% on 18-09-2026
Known exploited
Compare KEV catalogs- Added
- 28-01-2022
- Federal due date
- 28-07-2022
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2014-6271
Public exploits
39 foundExploit Reference (packetstormsecurity.com)
Maturity: unknown
Exploit Reference (securityblog.redhat.com)
Maturity: unknown
Exploit Reference (access.redhat.com)
Maturity: unknown
Show all 39 exploits
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Exploit Reference (access.redhat.com)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Exploit Reference (lcamtuf.blogspot.com)
Maturity: unknown
Advantech Switch - 'Shellshock' Bash Environment Variable Command Injection (Metasploit)
Maturity: weaponized
GNU Bash - Environment Variable Command Injection (Metasploit)
Maturity: weaponized
IPFire - 'Shellshock' Bash Environment Variable Command Injection (Metasploit)
Maturity: weaponized
Bash CGI - 'Shellshock' Remote Command Injection (Metasploit)
Maturity: poc
IPFire - CGI Web Interface (Authenticated) Bash Environment Variable Code Injection
Maturity: poc
QNAP - Admin Shell via Bash Environment Variable Code Injection (Metasploit)
Maturity: poc
QNAP - Web Server Remote Code Execution via Bash Environment Variable Code Injection (Metasploit)
Maturity: poc
TrendMicro InterScan Web Security Virtual Appliance - 'Shellshock' Remote Command Injection
Maturity: poc
RedStar 3.0 Server - 'Shellshock' 'BEAM' / 'RSSMON' Command Injection
Maturity: weaponized
Apache mod_cgi - 'Shellshock' Remote Command Injection
Maturity: weaponized
Bash - 'Shellshock' Environment Variables Command Injection
Maturity: weaponized
CUPS Filter - Bash Environment Variable Code Injection (Metasploit)
Maturity: weaponized
GNU Bash - 'Shellshock' Environment Variable Command Injection
Maturity: weaponized
GNU bash 4.3.11 - Environment Variable dhclient
Maturity: poc
OpenVPN 2.2.29 - 'Shellshock' Remote Command Injection
Maturity: poc
Postfix SMTP 4.2.x < 4.2.48 - 'Shellshock' Remote Command Injection
Maturity: weaponized
Pure-FTPd - External Authentication Bash Environment Variable Code Injection (Metasploit)
Maturity: weaponized
Qmail SMTP - Bash Environment Variable Injection (Metasploit)
Maturity: weaponized
Cisco Unified Communications Manager - Multiple Vulnerabilities
Maturity: poc
Kemp Load Master 7.1.16 - Multiple Vulnerabilities
Maturity: poc
PHP < 5.6.2 - 'Shellshock' Safe Mode / disable_functions Bypass / Command Injection
Maturity: poc
Apache mod_cgi Bash Environment Variable Injection (Shellshock) Scanner
auxiliary/scanner/http/apache_mod_cgi_bash_env
Maturity: poc
DHCP Client Bash Environment Variable Code Injection (Shellshock)
auxiliary/server/dhclient_bash_env
Maturity: poc
Advantech Switch Bash Environment Variable Code Injection (Shellshock)
exploit/linux/http/advantech_switch_bash_env_exec
Maturity: weaponized
IPFire Bash Environment Variable Injection (Shellshock)
exploit/linux/http/ipfire_bashbug_exec
Maturity: weaponized
Pure-FTPd External Authentication Bash Environment Variable Code Injection (Shellshock)
exploit/multi/ftp/pureftpd_bash_env_exec
Maturity: weaponized
Apache mod_cgi Bash Environment Variable Code Injection (Shellshock)
exploit/multi/http/apache_mod_cgi_bash_env_exec
Maturity: weaponized
CUPS Filter Bash Environment Variable Code Injection (Shellshock)
exploit/multi/http/cups_bash_env_exec
Maturity: weaponized
OS X VMWare Fusion Privilege Escalation via Bash Environment Code Injection (Shellshock)
exploit/osx/local/vmware_bash_function_root
Maturity: poc
Dhclient Bash Environment Variable Injection (Shellshock)
exploit/unix/dhcp/bash_environment
Maturity: weaponized
Qmail SMTP Bash Environment Variable Injection (Shellshock)
exploit/unix/smtp/qmail_bash_env_exec
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Ibm22 products
- flex_system_v7000_firmware≥ 1.1.0.0, < 7.1.0.11 | ≥ 7.2.0.0, < 7.2.0.9 | ≥ 7.3.0.0, < 7.3.0.7
- infosphere_guardium_database_activity_monitoring8.2 | 9.0 | 9.1
- pureapplication_system≥ 1.0.0.0, ≤ 1.0.0.4 | ≥ 1.1.0.0, ≤ 1.1.0.4 | 2.0.0.0
- qradar_risk_manager7.1.0
- qradar_security_information_and_event_manager7.1.0 | 7.1.0:mr1 | 7.1.0:mr2 | 7.1.1 | 7.1.1:p1 | 7.1.1:p2 | 7.1.1:p3 | 7.1.2 | 7.1.2:p1 | 7.1.2:p10 | 7.1.2:p11 | 7.1.2:p12 | 7.1.2:p13 | 7.1.2:p2 | 7.1.2:p3 | 7.1.2:p4 | 7.1.2:p5 | 7.1.2:p6 | 7.1.2:p7 | 7.1.2:p8 | 7.1.2:p9 | 7.2 | 7.2.0 | 7.2.0:p1 | 7.2.0:p2 | 7.2.0:p3 | 7.2.1 | 7.2.1:p1 | 7.2.1:p2 | 7.2.1:p3 | 7.2.2 | 7.2.2:p1 | 7.2.2:p2 | 7.2.2:p3 | 7.2.2:p4 | 7.2.3 | 7.2.3:p1 | 7.2.3:p2 | 7.2.3:p3 | 7.2.3:p4 | 7.2.4 | 7.2.4:p1 | 7.2.4:p2 | 7.2.4:p3 | 7.2.4:p4 | 7.2.4:p5 | 7.2.4:p6 | 7.2.5 | 7.2.5:p1 | 7.2.5:p2 | 7.2.5:p3 | 7.2.5:p4 | 7.2.5:p5 | 7.2.5:p6 | 7.2.6 | 7.2.6:p1 | 7.2.6:p2 | 7.2.6:p3 | 7.2.6:p4 | 7.2.6:p5 | 7.2.6:p6 | 7.2.6:p7 | 7.2.7 | 7.2.7:p1 | 7.2.7:p2 | 7.2.7:p3 | 7.2.7:p4 | 7.2.8 | 7.2.8:p1 | 7.2.8:p10 | 7.2.8:p11 | 7.2.8:p12 | 7.2.8:p13 | 7.2.8:p14 | 7.2.8:p15 | 7.2.8:p16 | 7.2.8:p2 | 7.2.8:p3 | 7.2.8:p4 | 7.2.8:p5 | 7.2.8:p6 | 7.2.8:p7 | 7.2.8:p8 | 7.2.8:p9 | 7.2.8.15 | 7.2.9
F519 products
- arx≥ 6.0.0, ≤ 6.4.0
- big-ip_access_policy_manager≥ 10.1.0, ≤ 10.2.4 | ≥ 11.0.0, ≤ 11.5.1 | 11.6.0
- big-ip_advanced_firewall_manager≥ 11.3.0, ≤ 11.5.1 | 11.6.0
- big-ip_analytics≥ 11.0.0, ≤ 11.5.1 | 11.6.0
- big-ip_application_acceleration_manager≥ 11.4.0, ≤ 11.5.1 | 11.6.0
Redhat17 products
- enterprise_linuxEOL4.0 | 5.0 | 6.0 | 7.0
- enterprise_linux_desktop5.0 | 6.0 | 7.0
- enterprise_linux_eus5.9 | 6.4 | 6.5 | 7.3 | 7.4 | 7.5 | 7.6 | 7.7
- enterprise_linux_for_ibm_z_systems5.9_s390x | 6.4_s390x | 6.5_s390x | 7.3_s390x | 7.4_s390x | 7.5_s390x | 7.6_s390x | 7.7_s390x
- enterprise_linux_for_power_big_endian5.0_ppc | 5.9_ppc | 6.0_ppc64 | 6.4_ppc64 | 7.0_ppc64
Suse4 products
- linux_enterprise_desktop11:sp3 | 12
- linux_enterprise_server10:sp3 | 10:sp4 | 11:sp1 | 11:sp2 | 11:sp3 | 12
- linux_enterprise_software_development_kit11:sp3 | 12
- studio_onsite1.3
Mageia3 products
- bash< 4.2-48.1.mga3
- bash< 4.2-48.1.mga4
- mageiaEOL3.0 | 4.0
Debian2 products
- bash< 4.3-9.1 | < 4.1-3+deb6u1 | < 4.2+dfsg-0.1+deb7u1
- debian_linuxEOL7.0
Novell2 products
- open_enterprise_server2.0:sp3 | 11.0:sp2
- zenworks_configuration_management10.3 | 11 | 11.1 | 11.2 | 11.3.0
Vmware2 products
- esx4.0 | 4.1
- vcenter_server_appliance5.0 | 5.0:update_1 | 5.0:update_2 | 5.1 | 5.1:update_1 | 5.1:update_2 | 5.5 | 5.5:update_1
Apple1 product
- mac_os_x≥ 10.0.0, < 10.10.0
Arista1 product
- eos≥ 4.9.0, < 4.9.12 | ≥ 4.10.0, < 4.10.9 | ≥ 4.11.0, < 4.11.11 | ≥ 4.12.0, < 4.12.9 | ≥ 4.13.0, < 4.13.9 | ≥ 4.14.0, < 4.14.4f
Canonical1 product
- ubuntu_linuxEOL10.04 | 12.04 | 14.04
Checkpoint1 product
- security_gateway< r77.30
Citrix1 product
- netscaler_sdx_firmware< 9.3.67.5r1 | ≥ 10, < 10.1.129.11r1 | ≥ 10.5, < 10.5.52.11r1
Gnu1 product
- bash≤ 4.3
Opensuse1 product
- opensuseEOL12.3 | 13.1 | 13.2
Oracle1 product
- linuxEOL4 | 5 | 6
Qnap1 product
- qts< 4.1.1 | 4.1.1 | 4.1.1:build_0927
Ubuntu1 product
- bash< 4.3-7ubuntu1.1
18 vendors · 81 products
References
190 links- packetstormsecurity.com/files/128517/VMware-Security-Advisory-2014-0010.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry
- lists.opensuse.org/opensuse-security-announce/2014-09/msg00034.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
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- marc.info?l=bugtraq&m=142719845423222&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
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- lists.opensuse.org/opensuse-security-announce/2014-09/msg00037.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- marc.info?l=bugtraq&m=141383138121313&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
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- www.securityfocus.com/archive/1/533593/100/0/threadedMailing ListX Refsource BUGTRAQBroken LinkThird Party AdvisoryVDB Entry
- marc.info?l=bugtraq&m=142358026505815&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
- www-01.ibm.com/support/docview.wss?uid=swg21686479X Refsource CONFIRMBroken LinkThird Party Advisory
- www.websense.com/support/article/kbarticle/Vulnerabilities-resolved-in-TRITON-APX-Version-8-0X Refsource CONFIRMBroken LinkThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2014-09/msg00044.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- marc.info?l=bugtraq&m=141383026420882&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
- marc.info?l=bugtraq&m=141585637922673&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2014-09/msg00049.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
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- lists.opensuse.org/opensuse-updates/2014-10/msg00025.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- marc.info?l=bugtraq&m=142358078406056&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
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- kc.mcafee.com/corporate/index?page=content&id=SB10085X Refsource CONFIRMBroken LinkThird Party Advisory
- lists.opensuse.org/opensuse-updates/2014-10/msg00023.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5096315X Refsource CONFIRMBroken LinkThird Party Advisory
- marc.info?l=bugtraq&m=141319209015420&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
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- marc.info?l=bugtraq&m=141879528318582&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
- marc.info?l=bugtraq&m=142118135300698&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2014-09/msg00029.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- marc.info?l=bugtraq&m=141383196021590&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
- marc.info?l=bugtraq&m=141383081521087&w=2Vendor AdvisoryX Refsource HPMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2014-09/msg00028.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- packetstormsecurity.com/files/137376/IPFire-Bash-Environment-Variable-Injection-Shellshock.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry
- lists.opensuse.org/opensuse-security-announce/2014-10/msg00004.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- archives.neohapsis.com/archives/bugtraq/2014-10/0101.htmlVendor AdvisoryX Refsource APPLEBroken LinkThird Party Advisory
- www-01.ibm.com/support/docview.wss?uid=swg21685914X Refsource CONFIRMBroken LinkThird Party Advisory
- www.mandriva.com/security/advisories?name=MDVSA-2015:164Vendor AdvisoryX Refsource MANDRIVABroken LinkThird Party Advisory
- support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c04497075X Refsource CONFIRMThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2014-09/msg00040.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
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Showing 100 of 190. Use Open JSON for the complete list.