Veracode Vulnerability DatabaseVERACODE:25980Denial 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 the grub_malloc does not validate allocation size allowing for arithmetic overflow and subsequent heap-based buffer overflow.
References
lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
www.openwall.com/lists/oss-security/2020/07/29/3
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
bugzilla.redhat.com/show_bug.cgi?id=1852009
security.gentoo.org/glsa/202104-05
security.netapp.com/advisory/ntap-20200731-0008/
usn.ubuntu.com/4432-1/
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