csaf_redhat - rhsa-2020

rhsa-2020_3592

Vulnerability from csaf_redhat

Published

2020-09-01 16:43

Modified

2024-11-05 22:40

Summary

Red Hat Security Advisory: bash security update

Notes

Topic

An update for bash is now available for Red Hat Enterprise Linux 7.7 Extended Update Support. 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.

Details

The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es): * bash: BASH_CMD is writable in restricted bash shells (CVE-2019-9924) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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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        "name": "Improper Neutralization of Special Elements"
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          "category": "description",
          "text": "rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the permissions of the shell.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bash: BASH_CMD is writable in restricted bash shells",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Impact of the flaw set to Moderate as restricted shell shall not be used as a security feature alone, as it is very hard to configure it properly and several bypasses exist for it.\n\nThis issue did not affect the versions of bash as shipped with Red Hat Enterprise Linux 5 as they did not include support for BASH_CMDS environment variable.\n\nRed Hat Virtualization Hypervisor and Management Appliance were affected by this issue, but do not use the restricted bash shell in a way that would be exposed to attackers.  Future updates may address this issue.",
          "title": "Statement"
        },
        {
          "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"
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          "url": "https://access.redhat.com/security/cve/CVE-2019-9924"
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        {
          "category": "external",
          "summary": "RHBZ#1691774",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1691774"
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        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-9924",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9924"
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      "threats": [
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      "title": "bash: BASH_CMD is writable in restricted bash shells"
    }
  ]
}

cve-2019-9924

Vulnerability from cvelistv5

Published

2019-03-22 07:05

Modified

2024-08-04 22:01

Severity ?

Summary

rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the permissions of the shell.

References

▼	URL	Tags
	https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1803441	x_refsource_MISC
	http://git.savannah.gnu.org/cgit/bash.git/tree/CHANGES?h=bash-4.4-testing#n65	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html	mailing-list, x_refsource_MLIST
	http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00049.html	vendor-advisory, x_refsource_SUSE
	https://security.netapp.com/advisory/ntap-20190411-0001/	x_refsource_CONFIRM
	https://usn.ubuntu.com/4058-1/	vendor-advisory, x_refsource_UBUNTU
	https://usn.ubuntu.com/4058-2/	vendor-advisory, x_refsource_UBUNTU

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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            },
            {
              "name": "[debian-lts-announce] 20190325 [SECURITY] [DLA 1726-1] bash security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html"
            },
            {
              "name": "openSUSE-SU-2019:1178",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00049.html"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20190411-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20190411-0001/"
            },
            {
              "name": "USN-4058-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4058-1/"
            },
            {
              "name": "USN-4058-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4058-2/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-9924",
    "datePublished": "2019-03-22T07:05:28",
    "dateReserved": "2019-03-22T00:00:00",
    "dateUpdated": "2024-08-04T22:01:55.187Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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