CVE-2020-27779 Affecting grub2-x86_64-efi package, versions <2.04-9.34.1
Snyk CVSS
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Test your applications- Snyk ID SNYK-SLES152-GRUB2X8664EFI-2687161
- published 14 Apr 2022
- disclosed 2 Mar 2021
Introduced: 2 Mar 2021
CVE-2020-27779 Open this link in a new tabHow to fix?
Upgrade SLES:15.2
grub2-x86_64-efi
to version 2.04-9.34.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grub2-x86_64-efi
package and not the grub2-x86_64-efi
package as distributed by SLES:15.2
.
See How to fix?
for SLES:15.2
relevant fixed versions and status.
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
- CVE-2020-27779
- E-Mail link for SUSE-SU-2021:0683-1
- Link for SUSE-SU-2021:0683-1
- SUSE Bug 1175970
- SUSE Bug 1176711
- SUSE Bug 1177883
- SUSE Bug 1179264
- SUSE Bug 1179265
- SUSE Bug 1182057
- SUSE Bug 1182262
- SUSE Bug 1182263
- SUSE Bug 1192833
- SUSE CVE CVE-2020-14372 page
- SUSE CVE CVE-2020-25632 page
- SUSE CVE CVE-2020-25647 page
- SUSE CVE CVE-2020-27749 page
- SUSE CVE CVE-2020-27779 page
- SUSE CVE CVE-2021-20225 page
- SUSE CVE CVE-2021-20233 page
- SUSE Security Ratings
- secalert@redhat.com
- secalert@redhat.com
- secalert@redhat.com
- secalert@redhat.com