csaf_redhat - rhsa-2023

rhsa-2023_0284

Vulnerability from csaf_redhat

Published

2023-01-23 09:22

Modified

2024-11-06 02:15

Summary

Red Hat Security Advisory: sudo security update

Notes

Topic

An update for sudo is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. 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 sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root. Security Fix(es): * sudo: arbitrary file write with privileges of the RunAs user (CVE-2023-22809) 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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      "discovery_date": "2023-01-16T00:00:00+00:00",
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          "category": "description",
          "text": "A vulnerability was found in sudo. Exposure in how sudoedit handles user-provided environment variables leads to arbitrary file writing with privileges of the RunAs user (usually root). The prerequisite for exploitation is that the current user must be authorized by the sudoers policy to edit a file using sudoedit.",
          "title": "Vulnerability description"
        },
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          "text": "sudo: arbitrary file write with privileges of the RunAs user",
          "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"
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        {
          "category": "external",
          "summary": "https://github.com/sudo-project/sudo/releases/tag/SUDO_1_9_12p2",
          "url": "https://github.com/sudo-project/sudo/releases/tag/SUDO_1_9_12p2"
        },
        {
          "category": "external",
          "summary": "https://www.sudo.ws/security/advisories/sudoedit_any/",
          "url": "https://www.sudo.ws/security/advisories/sudoedit_any/"
        }
      ],
      "release_date": "2023-01-18T15:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-01-23T09:22:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.src",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.x86_64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.x86_64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2023:0284"
        },
        {
          "category": "workaround",
          "details": "It is possible to prevent a user-specified editor from being used by sudoedit by adding the following line to the sudoers file.\n~~~\nDefaults!sudoedit    env_delete+=\"SUDO_EDITOR VISUAL EDITOR\"\n~~~\n\nTo restrict the editor when editing specific files, a Cmnd_Alias can be used, for example:\n~~~\nCmnd_Alias              EDIT_MOTD = sudoedit /etc/motd\nDefaults!EDIT_MOTD      env_delete+=\"SUDO_EDITOR VISUAL EDITOR\"\nuser                    ALL = EDIT_MOTD\n~~~\nBut if possible please update the affected package as soon as possible.",
          "product_ids": [
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.src",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.x86_64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.ppc64le",
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            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.x86_64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.src",
            "BaseOS-8.7.0.Z.MAIN:sudo-0:1.8.29-8.el8_7.1.x86_64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-debuginfo-0:1.8.29-8.el8_7.1.x86_64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.aarch64",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.ppc64le",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.s390x",
            "BaseOS-8.7.0.Z.MAIN:sudo-debugsource-0:1.8.29-8.el8_7.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "sudo: arbitrary file write with privileges of the RunAs user"
    }
  ]
}

cve-2023-22809

Vulnerability from cvelistv5

Published

2023-01-18 00:00

Modified

2024-08-02 10:20

Severity ?

Summary

In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR), allowing a local attacker to append arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a "--" argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value.

References

▼	URL	Tags
	https://www.synacktiv.com/sites/default/files/2023-01/sudo-CVE-2023-22809.pdf
	https://www.sudo.ws/security/advisories/sudoedit_any/
	https://lists.debian.org/debian-lts-announce/2023/01/msg00012.html	mailing-list
	https://www.debian.org/security/2023/dsa-5321	vendor-advisory
	http://www.openwall.com/lists/oss-security/2023/01/19/1	mailing-list
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2QDGFCGAV5QRJCE6IXRXIS4XJHS57DDH/	vendor-advisory
	https://security.netapp.com/advisory/ntap-20230127-0015/
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4YNBTTKTRT2ME3NTSXAPTOKYUE47XHZ/	vendor-advisory
	http://packetstormsecurity.com/files/171644/sudo-1.9.12p1-Privilege-Escalation.html
	https://security.gentoo.org/glsa/202305-12	vendor-advisory
	https://support.apple.com/kb/HT213758
	http://packetstormsecurity.com/files/172509/Sudoedit-Extra-Arguments-Privilege-Escalation.html
	http://seclists.org/fulldisclosure/2023/Aug/21	mailing-list
	http://packetstormsecurity.com/files/174234/Cisco-ThousandEyes-Enterprise-Agent-Virtual-Appliance-Arbitrary-File-Modification.html

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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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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