Veracode Vulnerability DatabaseVERACODE:25984Denial Of Service (DoS)
6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
4.4 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
grub2 is vulnerable to denial of service (DoS). The vulnerability exists as it fails kernel validation without shim protocol.
References
lists.opensuse.org/opensuse-security-announce/2020-08/msg00067.html
lists.opensuse.org/opensuse-security-announce/2020-08/msg00069.html
ubuntu.com/security/notices/USN-4432-1
www.openwall.com/lists/oss-security/2020/07/29/3
www.openwall.com/lists/oss-security/2021/03/02/3
www.openwall.com/lists/oss-security/2021/09/17/2
www.openwall.com/lists/oss-security/2021/09/17/4
www.openwall.com/lists/oss-security/2021/09/21/1
access.redhat.com/errata/RHSA-2020:3223
access.redhat.com/security/updates/classification/#moderate
access.redhat.com/security/vulnerabilities/grub2bootloader
lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html
portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011
security.gentoo.org/glsa/202104-05
security.netapp.com/advisory/ntap-20200731-0008/
usn.ubuntu.com/4432-1/
wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass
www.debian.org/security/2020-GRUB-UEFI-SecureBoot
www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
www.openwall.com/lists/oss-security/2020/07/29/3
www.suse.com/c/suse-addresses-grub2-secure-boot-issue/
www.suse.com/support/kb/doc/?id=000019673
Related
6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
4.4 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P