Vulnerability-Lookup

OESA-2022-1567 (CVE-2021-45444)

Vulnerability from osv_openeuler – Published: 2022-03-12 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

zsh security update

Details

The zsh is a shell designed for interactive use, and it is also a powerful scripting language. Many of the useful features of bash, ksh, and tcsh were incorporated into zsh. It can match files by file extension without running an external program, share command history with any shell, and more.

Security Fix(es):

In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.(CVE-2021-45444)

Severity

8.8 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-45444	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "zsh-debugsource-5.7.1-6.oe1.aarch64.rpm",
          "zsh-debuginfo-5.7.1-6.oe1.aarch64.rpm",
          "zsh-5.7.1-6.oe1.aarch64.rpm"
        ],
        "noarch": [
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        "src": [
          "zsh-5.7.1-6.oe1.src.rpm"
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        "x86_64": [
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          "zsh-debugsource-5.7.1-6.oe1.x86_64.rpm",
          "zsh-debuginfo-5.7.1-6.oe1.x86_64.rpm"
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      },
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        "name": "zsh",
        "purl": "pkg:rpm/openEuler/zsh\u0026distro=openEuler-20.03-LTS-SP1"
      },
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            {
              "introduced": "0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
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        ],
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          "zsh-debugsource-5.7.1-6.oe1.x86_64.rpm",
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      },
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            },
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          "zsh-debuginfo-5.7.1-6.oe1.aarch64.rpm",
          "zsh-debugsource-5.7.1-6.oe1.aarch64.rpm"
        ],
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          "zsh-help-5.7.1-6.oe1.noarch.rpm"
        ],
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        ],
        "x86_64": [
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      },
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        "name": "zsh",
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      },
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            },
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The zsh is a shell designed for interactive use, and it is also a powerful scripting language. Many of the useful features of bash, ksh, and tcsh were incorporated into zsh. It can match files by file extension without running an external program, share command history with any shell, and more.\r\n\r\nSecurity Fix(es):\r\n\r\nIn zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.(CVE-2021-45444)",
  "id": "OESA-2022-1567",
  "modified": "2026-08-06T11:04:50Z",
  "published": "2022-03-12T11:04:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1567"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45444"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "zsh security update",
  "upstream": [
    "CVE-2021-45444"
  ]
}

CVE-2021-45444 (GCVE-0-2021-45444)

Vulnerability from cvelistv5 – Published: 2022-02-13 05:32 – Updated: 2024-08-04 04:39

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

12 references

URL	Tags
https://zsh.sourceforge.io/releases.html	x_refsource_MISC
https://vuln.ryotak.me/advisories/63	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2022/dsa-5078	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://support.apple.com/kb/HT213257	x_refsource_CONFIRM
https://support.apple.com/kb/HT213256	x_refsource_CONFIRM
https://support.apple.com/kb/HT213255	x_refsource_CONFIRM
http://seclists.org/fulldisclosure/2022/May/33	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2022/May/35	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2022/May/38	mailing-listx_refsource_FULLDISC

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2022-1567 (CVE-2021-45444)

CVE-2021-45444 (GCVE-0-2021-45444)

Tags

Sightings

Nomenclature

Related by attack behaviour