rhsa-2014_1295
Vulnerability from csaf_redhat
Published
2014-09-24 14:18
Modified
2024-11-14 16:26
Summary
Red Hat Security Advisory: bash Shift_JIS security update

Notes

Topic
Updated bash Shift_JIS packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6. Red Hat Product Security has rated this update as having Critical 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.
Details
The GNU Bourne Again shell (Bash) is a shell and command language interpreter compatible with the Bourne shell (sh). Bash is the default shell for Red Hat Enterprise Linux. Shift_JIS, also known as "SJIS", is a character encoding for the Japanese language. This package provides bash support for the Shift_JIS encoding. A flaw was found in the way Bash evaluated certain specially crafted environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue. (CVE-2014-6271) For additional information on the CVE-2014-6271 flaw, refer to the Knowledgebase article at https://access.redhat.com/articles/1200223 Red Hat would like to thank Stephane Chazelas for reporting this issue. All users who require Shift_JIS encoding support with Bash built-in functions are advised to upgrade to these updated packages, which contain a backported patch to correct this issue.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "relates_to_product_reference": "6Server-SJIS-6.5.Z"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2014-6271",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
      "discovery_date": "2014-09-12T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1141597"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the way Bash evaluated certain specially crafted environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bash: specially-crafted environment variables can be used to inject shell commands",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
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          "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.ia64",
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          "5Server-SJIS-5.11.z:bash-debuginfo-0:3.2-33.el5_11.1.sjis.1.x86_64",
          "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.i686",
          "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.src",
          "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.x86_64",
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          "6Server-SJIS-6.5.Z:bash-debuginfo-0:4.1.2-15.el6_5.1.sjis.1.x86_64",
          "6Server-SJIS-6.5.Z:bash-doc-0:4.1.2-15.el6_5.1.sjis.1.i686",
          "6Server-SJIS-6.5.Z:bash-doc-0:4.1.2-15.el6_5.1.sjis.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2014-6271"
        },
        {
          "category": "external",
          "summary": "RHBZ#1141597",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1141597"
        },
        {
          "category": "external",
          "summary": "RHSB-shellshock",
          "url": "https://access.redhat.com/security/vulnerabilities/shellshock"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2014-6271",
          "url": "https://www.cve.org/CVERecord?id=CVE-2014-6271"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2014-6271",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-6271"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/articles/1200223",
          "url": "https://access.redhat.com/articles/1200223"
        },
        {
          "category": "external",
          "summary": "https://securityblog.redhat.com/2014/09/24/bash-specially-crafted-environment-variables-code-injection-attack",
          "url": "https://securityblog.redhat.com/2014/09/24/bash-specially-crafted-environment-variables-code-injection-attack"
        },
        {
          "category": "external",
          "summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
          "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
        }
      ],
      "release_date": "2014-09-24T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2014-09-24T14:18:35+00:00",
          "details": "Before applying this update, make sure all previously released errata \nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to use the \nRed Hat Network to apply this update are available at \nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.i386",
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.ia64",
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.src",
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.x86_64",
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            "5Server-SJIS-5.11.z:bash-debuginfo-0:3.2-33.el5_11.1.sjis.1.ia64",
            "5Server-SJIS-5.11.z:bash-debuginfo-0:3.2-33.el5_11.1.sjis.1.x86_64",
            "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.i686",
            "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.src",
            "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.x86_64",
            "6Server-SJIS-6.5.Z:bash-debuginfo-0:4.1.2-15.el6_5.1.sjis.1.i686",
            "6Server-SJIS-6.5.Z:bash-debuginfo-0:4.1.2-15.el6_5.1.sjis.1.x86_64",
            "6Server-SJIS-6.5.Z:bash-doc-0:4.1.2-15.el6_5.1.sjis.1.i686",
            "6Server-SJIS-6.5.Z:bash-doc-0:4.1.2-15.el6_5.1.sjis.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2014:1295"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "products": [
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.i386",
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.ia64",
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.src",
            "5Server-SJIS-5.11.z:bash-0:3.2-33.el5_11.1.sjis.1.x86_64",
            "5Server-SJIS-5.11.z:bash-debuginfo-0:3.2-33.el5_11.1.sjis.1.i386",
            "5Server-SJIS-5.11.z:bash-debuginfo-0:3.2-33.el5_11.1.sjis.1.ia64",
            "5Server-SJIS-5.11.z:bash-debuginfo-0:3.2-33.el5_11.1.sjis.1.x86_64",
            "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.i686",
            "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.src",
            "6Server-SJIS-6.5.Z:bash-0:4.1.2-15.el6_5.1.sjis.1.x86_64",
            "6Server-SJIS-6.5.Z:bash-debuginfo-0:4.1.2-15.el6_5.1.sjis.1.i686",
            "6Server-SJIS-6.5.Z:bash-debuginfo-0:4.1.2-15.el6_5.1.sjis.1.x86_64",
            "6Server-SJIS-6.5.Z:bash-doc-0:4.1.2-15.el6_5.1.sjis.1.i686",
            "6Server-SJIS-6.5.Z:bash-doc-0:4.1.2-15.el6_5.1.sjis.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "exploit_status",
          "date": "2022-01-28T00:00:00+00:00",
          "details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
        },
        {
          "category": "impact",
          "details": "Critical"
        }
      ],
      "title": "bash: specially-crafted environment variables can be used to inject shell commands"
    }
  ]
}


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