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Vulnerability details: VCID-x5aj-y3ra-aaac
Vulnerability ID VCID-x5aj-y3ra-aaac
Aliases CVE-2023-48733
Summary An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.
Status Published
Exploitability 0.5
Weighted Severity 6.0
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.0007 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 4e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 4e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 4e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 4e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
epss 7e-05 https://api.first.org/data/v1/epss?cve=CVE-2023-48733
cvssv3.1 6.7 https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
ssvc Track* https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
cvssv3.1 6.7 https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
ssvc Track* https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
cvssv3.1 6.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.7 https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
ssvc Track* https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
cvssv3.1 6.7 https://nvd.nist.gov/vuln/detail/CVE-2023-48733
ssvc Track https://nvd.nist.gov/vuln/detail/CVE-2023-48733
ssvc Track* https://nvd.nist.gov/vuln/detail/CVE-2023-48733
cvssv3.1 6.7 https://www.openwall.com/lists/oss-security/2024/02/14/4
ssvc Track* https://www.openwall.com/lists/oss-security/2024/02/14/4
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2023-48733
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-48733
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
https://www.openwall.com/lists/oss-security/2024/02/14/4
CVE-2023-48733 https://nvd.nist.gov/vuln/detail/CVE-2023-48733
USN-6638-1 https://usn.ubuntu.com/6638-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2024-02-15T16:17:59Z/ Found at https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2024-02-15T16:17:59Z/ Found at https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2024-02-15T16:17:59Z/ Found at https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-48733
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-02-15T16:55:58Z/ Found at https://nvd.nist.gov/vuln/detail/CVE-2023-48733
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2024-02-15T16:17:59Z/ Found at https://nvd.nist.gov/vuln/detail/CVE-2023-48733
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://www.openwall.com/lists/oss-security/2024/02/14/4
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2024-02-15T16:17:59Z/ Found at https://www.openwall.com/lists/oss-security/2024/02/14/4
Exploit Prediction Scoring System (EPSS)
Percentile 0.16666
EPSS Score 0.00045
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
2024-02-14T16:22:00.833187+00:00 Debian Importer Import https://security-tracker.debian.org/tracker/data/json 34.0.0rc2