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Vulnerability details: VCID-abxw-2d5v-aaak
Vulnerability ID VCID-abxw-2d5v-aaak
Aliases CVE-2021-38576
Summary A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty. This can be used to permanently brick the TPM in multiple ways, as well as to non-permanently DoS the system.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00087 https://api.first.org/data/v1/epss?cve=CVE-2021-38576
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epss 0.00094 https://api.first.org/data/v1/epss?cve=CVE-2021-38576
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epss 0.00239 https://api.first.org/data/v1/epss?cve=CVE-2021-38576
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epss 0.00396 https://api.first.org/data/v1/epss?cve=CVE-2021-38576
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epss 0.00472 https://api.first.org/data/v1/epss?cve=CVE-2021-38576
cvssv2 7.8 https://nvd.nist.gov/vuln/detail/CVE-2021-38576
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-38576
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-38576
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-38576
https://bugzilla.tianocore.org/show_bug.cgi?id=3499
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38576
1014468 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1014468
cpe:2.3:a:tianocore:edk2:201808:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:201808:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:201811:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:201811:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:201903:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:201903:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:201905:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:201905:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:201908:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:201908:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:201911:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:201911:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:202002:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:202002:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:202005:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:202005:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:202008:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:202008:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:202011:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:202011:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:202102:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:202102:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:202105:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk2:202105:*:*:*:*:*:*:*
CVE-2021-38576 https://nvd.nist.gov/vuln/detail/CVE-2021-38576
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2021-38576
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-38576
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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-38576
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

Exploit Prediction Scoring System (EPSS)
Percentile 0.37749
EPSS Score 0.00087
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.