{
    "id": "CVE-2014-6277",
    "published": "2014-09-27 22:55:02",
    "last_modified": "2026-06-17 00:12:49",
    "cvss_score": "10.0",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
    "cwe": "CWE-78",
    "description": "GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access, and untrusted-pointer read and write operations) 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.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271 and CVE-2014-7169.",
    "epss_score": "0.69775",
    "epss_percentile": "0.99351",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:19:32",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "gnu",
            "product": "bash"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "35081",
            "title": "Binary File Descriptor Library (libbfd) - Out-of-Bounds Crash",
            "date": "2014-10-27",
            "url": "https://www.exploit-db.com/exploits/35081"
        },
        {
            "source": "exploit-db",
            "ref_id": "34860",
            "title": "GNU bash 4.3.11 - Environment Variable dhclient",
            "date": "2014-10-02",
            "url": "https://www.exploit-db.com/exploits/34860"
        },
        {
            "source": "exploit-db",
            "ref_id": "36933",
            "title": "dhclient 4.1 - Bash Environment Variable Command Injection (Shellshock)",
            "date": "2014-09-29",
            "url": "https://www.exploit-db.com/exploits/36933"
        }
    ],
    "refs_list": [
        "http://jvn.jp/en/jp/JVN55667175/index.html",
        "http://jvndb.jvn.jp/jvndb/JVNDB-2014-000126",
        "http://lcamtuf.blogspot.com/2014/09/bash-bug-apply-unofficial-patch-now.html",
        "http://lcamtuf.blogspot.com/2014/10/bash-bug-how-we-finally-cracked.html",
        "http://linux.oracle.com/errata/ELSA-2014-3093",
        "http://linux.oracle.com/errata/ELSA-2014-3094",
        "http://lists.apple.com/archives/security-announce/2015/Jan/msg00003.html",
        "http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html",
        "http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00004.html",
        "http://lists.opensuse.org/opensuse-updates/2014-10/msg00025.html",
        "http://marc.info/?l=bugtraq&m=141330468527613&w=2",
        "http://marc.info/?l=bugtraq&m=141345648114150&w=2",
        "http://marc.info/?l=bugtraq&m=141383026420882&w=2",
        "http://marc.info/?l=bugtraq&m=141383081521087&w=2",
        "http://marc.info/?l=bugtraq&m=141383196021590&w=2",
        "http://marc.info/?l=bugtraq&m=141383244821813&w=2",
        "http://marc.info/?l=bugtraq&m=141383304022067&w=2",
        "http://marc.info/?l=bugtraq&m=141383353622268&w=2",
        "http://marc.info/?l=bugtraq&m=141383465822787&w=2",
        "http://marc.info/?l=bugtraq&m=141450491804793&w=2",
        "http://marc.info/?l=bugtraq&m=141576728022234&w=2",
        "http://marc.info/?l=bugtraq&m=141577137423233&w=2",
        "http://marc.info/?l=bugtraq&m=141577241923505&w=2",
        "http://marc.info/?l=bugtraq&m=141577297623641&w=2",
        "http://marc.info/?l=bugtraq&m=141585637922673&w=2"
    ]
}