USN-6355-1

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Source
https://ubuntu.com/security/notices/USN-6355-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6355-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-6355-1
Related
Published
2023-09-08T21:56:31.961021Z
Modified
2023-09-08T21:56:31.961021Z
Summary
grub2-signed, grub2-unsigned, shim, and shim-signed vulnerability
Details

Daniel Axtens discovered that specially crafted images could cause a heap-based out-of-bonds write. A local attacker could possibly use this to circumvent secure boot protections. (CVE-2021-3695)

Daniel Axtens discovered that specially crafted images could cause out-of-bonds read and write. A local attacker could possibly use this to circumvent secure boot protections. (CVE-2021-3696)

Daniel Axtens discovered that specially crafted images could cause buffer underwrite which allows arbitrary data to be written to a heap. A local attacker could possibly use this to circumvent secure boot protections. (CVE-2021-3697)

It was discovered that GRUB2 configuration files were created with the wrong permissions. An attacker could possibly use this to leak encrypted passwords. (CVE-2021-3981)

Daniel Axtens discovered that specially crafted IP packets could cause an integer underflow and write past the end of a buffer. An attacker could possibly use this to circumvent secure boot protections. (CVE-2022-28733)

Daniel Axtens discovered that specially crafted HTTP headers can cause an out-of-bounds write of a NULL byte. An attacker could possibly use this to corrupt GRUB2's internal data. (CVE-2022-28734)

Julian Andres Klode discovered that GRUB2 shim_lock allowed non- kernel files to be loaded. A local attack could possibly use this to circumvent secure boot protections. (CVE-2022-28735)

Chris Coulson discovered that executing chainloaders more than once caused a use-after-free vulnerability. A local attack could possibly use this to circumvent secure boot protections. (CVE-2022-28736)

Chris Coulson discovered that specially crafted executables could cause shim to make out-of-bound writes. A local attack could possibly use this to circumvent secure boot protections. (CVE-2022-28737)

Zhang Boyang discovered that specially crafted unicode sequences could lead to an out-of-bounds write to a heap. A local attacker could possibly use this to circumvent secure boot protections. (CVE-2022-3775)

References

Affected packages

Ubuntu:20.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.187.3~20.04.1

Affected versions

1.*

1.128
1.129
1.130
1.131
1.133
1.134
1.135
1.136
1.137
1.138
1.139
1.140
1.141
1.142
1.142.1
1.142.3
1.142.4
1.142.5
1.142.6
1.142.8
1.142.9
1.142.10
1.142.11
1.167
1.167.2
1.173.2~20.04.1
1.173.4
1.187.2~20.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.187.3~20.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-signed"
        },
        {
            "binary_version": "1.187.3~20.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-signed"
        }
    ]
}

Ubuntu:20.04:LTS / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.06-2ubuntu14.1

Affected versions

2.*

2.04-1ubuntu44
2.04-1ubuntu44.2
2.04-1ubuntu47.4
2.04-1ubuntu47.5
2.06-2ubuntu14

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-dbg"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-dbg"
        }
    ]
}

Ubuntu:20.04:LTS / shim

Package

Name
shim
Purl
pkg:deb/ubuntu/shim?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
15.7-0ubuntu1

Affected versions

15+1533136590.*

15+1533136590.3beb971-0ubuntu1

15+1552672080.*

15+1552672080.a4a1fbe-0ubuntu1
15+1552672080.a4a1fbe-0ubuntu2

15.*

15.4-0ubuntu7
15.4-0ubuntu9

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "15.7-0ubuntu1",
            "binary_name": "shim"
        },
        {
            "binary_version": "15.7-0ubuntu1",
            "binary_name": "shim-dbg"
        }
    ]
}

Ubuntu:20.04:LTS / shim-signed

Package

Name
shim-signed
Purl
pkg:deb/ubuntu/shim-signed?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.40.9

Affected versions

1.*

1.39
1.40
1.40.3
1.40.4
1.40.6
1.40.7

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.40.9+15.7-0ubuntu1",
            "binary_name": "shim-signed"
        }
    ]
}

Ubuntu:22.04:LTS / grub2-signed

Package

Name
grub2-signed
Purl
pkg:deb/ubuntu/grub2-signed?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.187.3~22.04.1

Affected versions

1.*

1.173
1.174
1.176
1.177
1.178
1.179
1.180
1.182~22.04.1
1.187.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.187.3~22.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-signed"
        },
        {
            "binary_version": "1.187.3~22.04.1+2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-signed"
        }
    ]
}

Ubuntu:22.04:LTS / grub2-unsigned

Package

Name
grub2-unsigned
Purl
pkg:deb/ubuntu/grub2-unsigned?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.06-2ubuntu14.1

Affected versions

2.*

2.04-1ubuntu47
2.04-1ubuntu48
2.06-2ubuntu3
2.06-2ubuntu4
2.06-2ubuntu5
2.06-2ubuntu6
2.06-2ubuntu7
2.06-2ubuntu10
2.06-2ubuntu14

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-amd64-dbg"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-bin"
        },
        {
            "binary_version": "2.06-2ubuntu14.1",
            "binary_name": "grub-efi-arm64-dbg"
        }
    ]
}

Ubuntu:22.04:LTS / shim

Package

Name
shim
Purl
pkg:deb/ubuntu/shim?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
15.7-0ubuntu1

Affected versions

15.*

15.4-0ubuntu9

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "15.7-0ubuntu1",
            "binary_name": "shim"
        },
        {
            "binary_version": "15.7-0ubuntu1",
            "binary_name": "shim-dbg"
        }
    ]
}

Ubuntu:22.04:LTS / shim-signed

Package

Name
shim-signed
Purl
pkg:deb/ubuntu/shim-signed?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.51.3

Affected versions

1.*

1.51

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.51.3+15.7-0ubuntu1",
            "binary_name": "shim-signed"
        }
    ]
}