fkie_cve-2021-35938
Vulnerability from fkie_nvd
Published
2022-08-25 20:15
Modified
2024-11-21 06:12
Severity ?
Summary
A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
rpm | rpm | * | |
fedoraproject | fedora | 34 | |
redhat | enterprise_linux | 7.0 | |
redhat | enterprise_linux | 8.0 | |
redhat | enterprise_linux | 9.0 |
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It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability." }, { "lang": "es", "value": "Se ha encontrado un problema de enlaces simb\u00f3licos en rpm. Es producido cuando rpm establece los permisos y credenciales deseados despu\u00e9s de instalar un archivo. Un usuario local no privilegiado podr\u00eda usar este fallo para cambiar el archivo original por un enlace simb\u00f3lico a un archivo cr\u00edtico para la seguridad y escalar sus privilegios en el sistema. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad de los datos, as\u00ed como para la disponibilidad del sistema." } ], "id": "CVE-2021-35938", "lastModified": "2024-11-21T06:12:47.313", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2022-08-25T20:15:09.307", "references": [ { "source": "secalert@redhat.com", "tags": [ "Vendor Advisory" ], "url": "https://access.redhat.com/security/cve/CVE-2021-35938" }, { "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Vendor Advisory" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964114" }, { "source": "secalert@redhat.com", "tags": [ "Exploit", "Issue Tracking", "Third Party Advisory" ], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1157880" }, { "source": "secalert@redhat.com", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033" }, { "source": "secalert@redhat.com", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/rpm-software-management/rpm/pull/1919" }, { "source": "secalert@redhat.com", "tags": [ "Release Notes" ], "url": "https://rpm.org/wiki/Releases/4.18.0" }, { "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ], "url": "https://security.gentoo.org/glsa/202210-22" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Vendor Advisory" ], "url": "https://access.redhat.com/security/cve/CVE-2021-35938" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Vendor Advisory" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964114" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Exploit", "Issue Tracking", "Third Party Advisory" ], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1157880" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/rpm-software-management/rpm/pull/1919" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Release Notes" ], "url": "https://rpm.org/wiki/Releases/4.18.0" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://security.gentoo.org/glsa/202210-22" } ], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-59" } ], "source": "secalert@redhat.com", "type": "Secondary" }, { "description": [ { "lang": "en", "value": "CWE-59" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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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.