7 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
5.1 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
0.0005 Low
EPSS
Percentile
15.7%
Out-of-bounds write when handling split HTTP headers; When handling split
HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer
point by one position. This can lead to a out-of-bound write further when
parsing the HTTP request, writing a NULL byte past the buffer. It’s
conceivable that an attacker controlled set of packets can lead to
corruption of the GRUB2’s internal memory metadata.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | grub2-signed | < 1.187.3~18.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | grub2-signed | < 1.187.3~20.04.1 | UNKNOWN |
ubuntu | 22.04 | noarch | grub2-signed | < 1.187.3~22.04.1 | UNKNOWN |
ubuntu | 14.04 | noarch | grub2-signed | < any | UNKNOWN |
ubuntu | 16.04 | noarch | grub2-signed | < any | UNKNOWN |
ubuntu | 18.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14.1 | UNKNOWN |
ubuntu | 20.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14.1 | UNKNOWN |
ubuntu | 22.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14.1 | UNKNOWN |
ubuntu | 16.04 | noarch | grub2-unsigned | < any | UNKNOWN |
7 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
5.1 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:P/I:P/A:P
0.0005 Low
EPSS
Percentile
15.7%