Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
Required
Privileges Required
High
Attack Vector
Physical
0

CVE-2025-0690

Disclosure Date: February 24, 2025
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Description

The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it’s possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub’s internal critical data and secure boot bypass is not discarded as consequence.

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CVSS V3 Severity and Metrics
Base Score:
6.1 Medium
Impact Score:
5.9
Exploitability Score:
0.2
Vector:
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack Vector (AV):
Physical
Attack Complexity (AC):
Low
Privileges Required (PR):
High
User Interaction (UI):
Required
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Additional Info

Technical Analysis