MSRC_CVE-2021-3981
Vulnerability from csaf_microsoft - Published: 2022-03-02 00:00 - Updated: 2024-06-30 07:00Summary
A flaw in grub2 was found where its configuration file known as grub.cfg is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.
Notes
Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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"summary": "CVE-2021-3981 A flaw in grub2 was found where its configuration file known as grub.cfg is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released. - VEX",
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"summary": "CVE-2021-3981 A flaw in grub2 was found where its configuration file known as grub.cfg is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released. - VEX",
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"title": "A flaw in grub2 was found where its configuration file known as grub.cfg is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released."
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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