rhsa-2022_2120
Vulnerability from csaf_redhat
Published
2022-05-10 13:59
Modified
2024-11-22 18:33
Summary
Red Hat Security Advisory: zsh security update

Notes

Topic
An update for zsh is now available for Red Hat Enterprise Linux 8. 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 zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es): * zsh: Prompt expansion vulnerability (CVE-2021-45444) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from 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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        "text": "An update for zsh is now available for Red Hat Enterprise Linux 8.\n\nRed 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.",
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        "name": "Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)"
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          "text": "A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K argument. This occurs because of recursive PROMPT_SUBST expansion.",
          "title": "Vulnerability description"
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          "category": "summary",
          "text": "zsh: Prompt expansion vulnerability",
          "title": "Vulnerability summary"
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          "category": "other",
          "text": "Red Hat Enterprise Linux 6 and 7 are not affected, because the vulnerable function is not present in the code-base.\n\nRed Hat Product Security has rated this issue as having a Moderate security impact, and the issue is not currently planned to be addressed in future updates for Red Hat Enterprise Linux 6 and 7, hence, marked as Out-of-Support-Scope. \n\nFor additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle \u0026 Updates Policy: https://access.redhat.com/support/policy/updates/errata/.",
          "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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        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "zsh: Prompt expansion vulnerability"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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