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Vulnerability details: VCID-ncw4-3azc-1fb5
Vulnerability ID VCID-ncw4-3azc-1fb5
Aliases CVE-2022-3996
GHSA-vr8j-hgmm-jh9r
Summary Denial of service by double-checked locking in openssl-src If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs. Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling either `X509_VERIFY_PARAM_add0_policy()' or `X509_VERIFY_PARAM_set1_policies()' functions.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-667 Improper Locking
CWE-609 Double-Checked Locking
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-3996.json
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
epss 0.00172 https://api.first.org/data/v1/epss?cve=CVE-2022-3996
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-vr8j-hgmm-jh9r
cvssv3.1 7.5 https://github.com/alexcrichton/openssl-src-rs
cvssv4 8.7 https://github.com/alexcrichton/openssl-src-rs
generic_textual HIGH https://github.com/alexcrichton/openssl-src-rs
cvssv3.1 7.5 https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
cvssv4 8.7 https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
generic_textual HIGH https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
ssvc Track https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2022-3996
cvssv4 8.7 https://nvd.nist.gov/vuln/detail/CVE-2022-3996
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2022-3996
cvssv3.1 7.5 https://www.openssl.org/news/secadv/20221213.txt
cvssv4 8.7 https://www.openssl.org/news/secadv/20221213.txt
generic_textual HIGH https://www.openssl.org/news/secadv/20221213.txt
ssvc Track https://www.openssl.org/news/secadv/20221213.txt
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-3996.json
https://api.first.org/data/v1/epss?cve=CVE-2022-3996
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/alexcrichton/openssl-src-rs
https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
https://nvd.nist.gov/vuln/detail/CVE-2022-3996
https://www.openssl.org/news/secadv/20221213.txt
1027102 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1027102
2153239 https://bugzilla.redhat.com/show_bug.cgi?id=2153239
GHSA-vr8j-hgmm-jh9r https://github.com/advisories/GHSA-vr8j-hgmm-jh9r
USN-6039-1 https://usn.ubuntu.com/6039-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-3996.json
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

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required

unchanged

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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

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low

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/alexcrichton/openssl-src-rs
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

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required

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://github.com/alexcrichton/openssl-src-rs
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
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

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none

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

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passive

active

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-08-01T21:11:25Z/ Found at https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
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-2022-3996
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2022-3996
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

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none

passive

active

high

low

none

high

low

none

high

low

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high

low

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low

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://www.openssl.org/news/secadv/20221213.txt
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://www.openssl.org/news/secadv/20221213.txt
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

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Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-08-01T21:11:25Z/ Found at https://www.openssl.org/news/secadv/20221213.txt
Exploit Prediction Scoring System (EPSS)
Percentile 0.38651
EPSS Score 0.00172
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:05:53.040253+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-vr8j-hgmm-jh9r/GHSA-vr8j-hgmm-jh9r.json 38.0.0