FKIE_CVE-2020-27779

Vulnerability from fkie_nvd - Published: 2021-03-03 17:15 - Updated: 2024-11-21 05:21
Severity ?
7.5 (High) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Summary
A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1900698Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
secalert@redhat.comhttps://security.gentoo.org/glsa/202104-05Third Party Advisory
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20220325-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1900698Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202104-05Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220325-0001/Third Party Advisory
Impacted products
Vendor Product Version
gnu grub2 *
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux_server_aus 7.2
redhat enterprise_linux_server_aus 7.3
redhat enterprise_linux_server_aus 7.4
redhat enterprise_linux_server_aus 7.6
redhat enterprise_linux_server_aus 7.7
redhat enterprise_linux_server_aus 8.2
redhat enterprise_linux_server_eus 7.6
redhat enterprise_linux_server_eus 7.7
redhat enterprise_linux_server_eus 8.1
redhat enterprise_linux_server_tus 7.4
redhat enterprise_linux_server_tus 7.6
redhat enterprise_linux_server_tus 7.7
redhat enterprise_linux_server_tus 8.2
redhat enterprise_linux_workstation 7.0
fedoraproject fedora 33
fedoraproject fedora 34
netapp ontap_select_deploy_administration_utility -
To clipboard 

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  "lastModified": "2024-11-21T05:21:49.190",
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Sightings

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  • 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.



Detection rules are retrieved from Rulezet.