rhsa-2024_3669
Vulnerability from csaf_redhat
Published
2024-06-06 09:37
Modified
2024-11-24 15:50
Summary
Red Hat Security Advisory: less security update

Notes

Topic
An update for less is now available for Red Hat Enterprise Linux 7. 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 "less" utility is a text file browser that resembles "more", but allows users to move backwards in the file as well as forwards. Since "less" does not read the entire input file at startup, it also starts more quickly than ordinary text editors. Security Fix(es): * less: OS command injection (CVE-2024-32487) 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.
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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      "cve": "CVE-2024-32487",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
      "discovery_date": "2024-04-14T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2274980"
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      "notes": [
        {
          "category": "description",
          "text": "An OS command injection flaw was found in Less. Since quoting is mishandled in filename.c, opening files with attacker-controlled file names can lead to OS command execution. Exploitation requires the LESSOPEN environment variable, which is set by default in many common cases.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "less: OS command injection",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The described vulnerability in less poses an Important security risk due to its potential for arbitrary OS command execution. Exploitation of this vulnerability allows an attacker to inject malicious commands through specially crafted filenames containing newline characters. This could lead to unauthorized access, data exfiltration, or even full system compromise, depending on the privileges of the user executing the less command. Furthermore, the mishandling of the LESSOPEN environment variable exacerbates the issue, as it can be set by default in many installations, providing an additional vector for exploitation.",
          "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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      ],
      "product_status": {
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2024-32487"
        },
        {
          "category": "external",
          "summary": "RHBZ#2274980",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2274980"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2024-32487",
          "url": "https://www.cve.org/CVERecord?id=CVE-2024-32487"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2024-32487",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-32487"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2024/04/12/5",
          "url": "https://www.openwall.com/lists/oss-security/2024/04/12/5"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2024/04/13/2",
          "url": "https://www.openwall.com/lists/oss-security/2024/04/13/2"
        }
      ],
      "release_date": "2024-04-13T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-06-06T09:37:49+00:00",
          "details": "For details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:3669"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "less: OS command injection"
    }
  ]
}


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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.