8.3 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.025 Low
EPSS
Percentile
90.3%
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | shim | <= 15.7-1 | shim_15.7-1_all.deb |
Debian | 11 | all | shim | <= 15.7-1~deb11u1 | shim_15.7-1~deb11u1_all.deb |
Debian | 10 | all | shim | < 15.8-1~deb10u1 | shim_15.8-1~deb10u1_all.deb |
Debian | 999 | all | shim | < 15.8-1 | shim_15.8-1_all.deb |
Debian | 13 | all | shim | <= 15.7-1 | shim_15.7-1_all.deb |
8.3 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.025 Low
EPSS
Percentile
90.3%