CVE-2023-6237
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-6237
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-6237.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-6237
- Downstream
- Related
- Published
- 2024-04-25T07:15:45Z
- Modified
- 2025-09-19T14:48:33.052224Z
- Summary
- [none]
- Details
-
Issue summary: Checking excessively long invalid RSA public keys may take a long time.
Impact summary: Applications that use the function EVPPKEYpublic_check() to check RSA public keys may experience long delays. Where the key that is being checked has been obtained from an untrusted source this may lead to a Denial of Service.
When function EVPPKEYpublic_check() is called on RSA public keys, a computation is done to confirm that the RSA modulus, n, is composite. For valid RSA keys, n is a product of two or more large primes and this computation completes quickly. However, if n is an overly large prime, then this computation would take a long time.
An application that calls EVPPKEYpublic_check() and supplies an RSA key obtained from an untrusted source could be vulnerable to a Denial of Service attack.
The function EVPPKEYpublic_check() is not called from other OpenSSL functions however it is called from the OpenSSL pkey command line application. For that reason that application is also vulnerable if used with the '-pubin' and '-check' options on untrusted data.
The OpenSSL SSL/TLS implementation is not affected by this issue.
The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.
- References
-
- https://security.netapp.com/advisory/ntap-20240531-0007/
- https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d
- https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a
- https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294
- https://www.openssl.org/news/secadv/20240115.txt
- http://www.openwall.com/lists/oss-security/2024/03/11/1
- https://security.alpinelinux.org/vuln/CVE-2023-6237
Affected packages
Alpine:v3.17
openssl
Package
- Name
- openssl
- Purl
- pkg:apk/alpine/openssl?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.0.12-r3
Affected versions
1.*
1.1.1-r0
1.1.1-r1
1.1.1-r2
1.1.1-r3
1.1.1-r4
1.1.1-r5
1.1.1a-r0
1.1.1a-r1
1.1.1b-r0
1.1.1b-r1
1.1.1c-r0
1.1.1c-r1
1.1.1d-r1
1.1.1d-r2
1.1.1d-r3
1.1.1d-r4
1.1.1d-r5
1.1.1e-r0
1.1.1f-r0
1.1.1g-r0
1.1.1h-r0
1.1.1i-r0
1.1.1j-r0
1.1.1k-r0
1.1.1k-r1
1.1.1l-r0
3.*
3.0.0-r0
3.0.0-r1
3.0.0-r2
3.0.0-r3
3.0.0-r4
3.0.1-r0
3.0.1-r1
3.0.2-r0
3.0.3-r0
3.0.5-r0
3.0.5-r1
3.0.5-r2
3.0.5-r3
3.0.6-r0
3.0.7-r0
3.0.7-r2
3.0.8-r0
3.0.8-r1
3.0.8-r2
3.0.8-r3
3.0.8-r4
3.0.9-r0
3.0.9-r1
3.0.9-r2
3.0.9-r3
3.0.10-r0
3.0.11-r0
3.0.12-r0
3.0.12-r1
3.0.12-r2
Alpine:v3.18
openssl
Package
- Name
- openssl
- Purl
- pkg:apk/alpine/openssl?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.1.4-r4
Affected versions
1.*
1.1.1-r0
1.1.1-r1
1.1.1-r2
1.1.1-r3
1.1.1-r4
1.1.1-r5
1.1.1a-r0
1.1.1a-r1
1.1.1b-r0
1.1.1b-r1
1.1.1c-r0
1.1.1c-r1
1.1.1d-r1
1.1.1d-r2
1.1.1d-r3
1.1.1d-r4
1.1.1d-r5
1.1.1e-r0
1.1.1f-r0
1.1.1g-r0
1.1.1h-r0
1.1.1i-r0
1.1.1j-r0
1.1.1k-r0
1.1.1k-r1
1.1.1l-r0
3.*
3.0.0-r0
3.0.0-r1
3.0.0-r2
3.0.0-r3
3.0.0-r4
3.0.1-r0
3.0.1-r1
3.0.2-r0
3.0.3-r0
3.0.5-r0
3.0.5-r1
3.0.5-r2
3.0.5-r3
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.0.7-r2
3.0.8-r0
3.0.8-r1
3.1.0-r0
3.1.0-r1
3.1.0-r2
3.1.0-r3
3.1.0-r4
3.1.1-r0
3.1.1-r1
3.1.1-r2
3.1.1-r3
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.4-r1
3.1.4-r2
3.1.4-r3
Alpine:v3.19
openssl
Package
- Name
- openssl
- Purl
- pkg:apk/alpine/openssl?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.1.4-r4
Affected versions
1.*
1.1.1-r0
1.1.1-r1
1.1.1-r2
1.1.1-r3
1.1.1-r4
1.1.1-r5
1.1.1a-r0
1.1.1a-r1
1.1.1b-r0
1.1.1b-r1
1.1.1c-r0
1.1.1c-r1
1.1.1d-r1
1.1.1d-r2
1.1.1d-r3
1.1.1d-r4
1.1.1d-r5
1.1.1e-r0
1.1.1f-r0
1.1.1g-r0
1.1.1h-r0
1.1.1i-r0
1.1.1j-r0
1.1.1k-r0
1.1.1k-r1
1.1.1l-r0
3.*
3.0.0-r0
3.0.0-r1
3.0.0-r2
3.0.0-r3
3.0.0-r4
3.0.1-r0
3.0.1-r1
3.0.2-r0
3.0.3-r0
3.0.5-r0
3.0.5-r1
3.0.5-r2
3.0.5-r3
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.0.7-r2
3.0.8-r0
3.0.8-r1
3.1.0-r0
3.1.0-r1
3.1.0-r2
3.1.0-r3
3.1.0-r4
3.1.0-r5
3.1.1-r0
3.1.1-r1
3.1.1-r2
3.1.1-r3
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.4-r1
3.1.4-r2
3.1.4-r3
Alpine:v3.20
openssl
Package
- Name
- openssl
- Purl
- pkg:apk/alpine/openssl?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.1.4-r4
Affected versions
1.*
1.1.1-r0
1.1.1-r1
1.1.1-r2
1.1.1-r3
1.1.1-r4
1.1.1-r5
1.1.1a-r0
1.1.1a-r1
1.1.1b-r0
1.1.1b-r1
1.1.1c-r0
1.1.1c-r1
1.1.1d-r1
1.1.1d-r2
1.1.1d-r3
1.1.1d-r4
1.1.1d-r5
1.1.1e-r0
1.1.1f-r0
1.1.1g-r0
1.1.1h-r0
1.1.1i-r0
1.1.1j-r0
1.1.1k-r0
1.1.1k-r1
1.1.1l-r0
3.*
3.0.0-r0
3.0.0-r1
3.0.0-r2
3.0.0-r3
3.0.0-r4
3.0.1-r0
3.0.1-r1
3.0.2-r0
3.0.3-r0
3.0.5-r0
3.0.5-r1
3.0.5-r2
3.0.5-r3
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.0.7-r2
3.0.8-r0
3.0.8-r1
3.1.0-r0
3.1.0-r1
3.1.0-r2
3.1.0-r3
3.1.0-r4
3.1.0-r5
3.1.1-r0
3.1.1-r1
3.1.1-r2
3.1.1-r3
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.4-r1
3.1.4-r2
3.1.4-r3
Alpine:v3.21
openssl
Package
- Name
- openssl
- Purl
- pkg:apk/alpine/openssl?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.1.4-r4
Affected versions
1.*
1.1.1-r0
1.1.1-r1
1.1.1-r2
1.1.1-r3
1.1.1-r4
1.1.1-r5
1.1.1a-r0
1.1.1a-r1
1.1.1b-r0
1.1.1b-r1
1.1.1c-r0
1.1.1c-r1
1.1.1d-r1
1.1.1d-r2
1.1.1d-r3
1.1.1d-r4
1.1.1d-r5
1.1.1e-r0
1.1.1f-r0
1.1.1g-r0
1.1.1h-r0
1.1.1i-r0
1.1.1j-r0
1.1.1k-r0
1.1.1k-r1
1.1.1l-r0
3.*
3.0.0-r0
3.0.0-r1
3.0.0-r2
3.0.0-r3
3.0.0-r4
3.0.1-r0
3.0.1-r1
3.0.2-r0
3.0.3-r0
3.0.5-r0
3.0.5-r1
3.0.5-r2
3.0.5-r3
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.0.7-r2
3.0.8-r0
3.0.8-r1
3.1.0-r0
3.1.0-r1
3.1.0-r2
3.1.0-r3
3.1.0-r4
3.1.0-r5
3.1.1-r0
3.1.1-r1
3.1.1-r2
3.1.1-r3
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.4-r1
3.1.4-r2
3.1.4-r3
Alpine:v3.22
openssl
Package
- Name
- openssl
- Purl
- pkg:apk/alpine/openssl?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.1.4-r4
Affected versions
1.*
1.1.1-r0
1.1.1-r1
1.1.1-r2
1.1.1-r3
1.1.1-r4
1.1.1-r5
1.1.1a-r0
1.1.1a-r1
1.1.1b-r0
1.1.1b-r1
1.1.1c-r0
1.1.1c-r1
1.1.1d-r1
1.1.1d-r2
1.1.1d-r3
1.1.1d-r4
1.1.1d-r5
1.1.1e-r0
1.1.1f-r0
1.1.1g-r0
1.1.1h-r0
1.1.1i-r0
1.1.1j-r0
1.1.1k-r0
1.1.1k-r1
1.1.1l-r0
3.*
3.0.0-r0
3.0.0-r1
3.0.0-r2
3.0.0-r3
3.0.0-r4
3.0.1-r0
3.0.1-r1
3.0.2-r0
3.0.3-r0
3.0.5-r0
3.0.5-r1
3.0.5-r2
3.0.5-r3
3.0.6-r0
3.0.7-r0
3.0.7-r1
3.0.7-r2
3.0.8-r0
3.0.8-r1
3.1.0-r0
3.1.0-r1
3.1.0-r2
3.1.0-r3
3.1.0-r4
3.1.0-r5
3.1.1-r0
3.1.1-r1
3.1.1-r2
3.1.1-r3
3.1.2-r0
3.1.3-r0
3.1.4-r0
3.1.4-r1
3.1.4-r2
3.1.4-r3
Git
github.com/openssl/openssl
Affected ranges
- Type
- GIT
- Repo
- https://github.com/openssl/openssl
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixed
Affected versions
Other
BEFORE_engine
OpenSSL_0_9_1c
OpenSSL_0_9_2b
OpenSSL_0_9_3
OpenSSL_0_9_3a
OpenSSL_0_9_3beta2
OpenSSL_0_9_4
OpenSSL_0_9_5a
OpenSSL_0_9_5a-beta1
OpenSSL_0_9_5a-beta2
OpenSSL_0_9_5beta1
OpenSSL_0_9_5beta2
OpenSSL_0_9_6-beta3
OpenSSL_1_1_0-pre1
OpenSSL_1_1_0-pre2
OpenSSL_1_1_0-pre3
OpenSSL_1_1_0-pre4
OpenSSL_1_1_0-pre5
OpenSSL_1_1_0-pre6
OpenSSL_1_1_1
OpenSSL_1_1_1-pre1
OpenSSL_1_1_1-pre2
OpenSSL_1_1_1-pre3
OpenSSL_1_1_1-pre4
OpenSSL_1_1_1-pre5
OpenSSL_1_1_1-pre6
OpenSSL_1_1_1-pre7
OpenSSL_1_1_1-pre8
OpenSSL_1_1_1-pre9
master-post-auto-reformat
master-post-reformat
master-pre-auto-reformat
master-pre-reformat
openssl-3.*
openssl-3.0.0
openssl-3.0.0-alpha1
openssl-3.0.0-alpha10
openssl-3.0.0-alpha11
openssl-3.0.0-alpha12
openssl-3.0.0-alpha13
openssl-3.0.0-alpha14
openssl-3.0.0-alpha15
openssl-3.0.0-alpha16
openssl-3.0.0-alpha17
openssl-3.0.0-alpha2
openssl-3.0.0-alpha3
openssl-3.0.0-alpha4
openssl-3.0.0-alpha5
openssl-3.0.0-alpha6
openssl-3.0.0-alpha7
openssl-3.0.0-alpha8
openssl-3.0.0-alpha9
openssl-3.0.0-beta1
openssl-3.0.0-beta2
openssl-3.0.1
openssl-3.0.10
openssl-3.0.11
openssl-3.0.12
openssl-3.0.2
openssl-3.0.3
openssl-3.0.4
openssl-3.0.5
openssl-3.0.6
openssl-3.0.7
openssl-3.0.8
openssl-3.0.9
openssl-3.1.0
openssl-3.1.0-alpha1
openssl-3.1.0-beta1
openssl-3.1.1
openssl-3.1.2
openssl-3.1.3
openssl-3.1.4
openssl-3.2.0
openssl-3.2.0-alpha1
openssl-3.2.0-alpha2
openssl-3.2.0-beta1
Database specific
{
"vanir_signatures": [
{
"digest": {
"function_hash": "36262343259786368621085857695218833956",
"length": 1258.0
},
"id": "CVE-2023-6237-07b4356d",
"source": "https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d",
"signature_type": "Function",
"signature_version": "v1",
"target": {
"file": "crypto/rsa/rsa_sp800_56b_check.c",
"function": "ossl_rsa_sp800_56b_check_public"
},
"deprecated": false
},
{
"digest": {
"threshold": 0.9,
"line_hashes": [
"5799985256469090440161975918621279176",
"231956326038171660204156138522531293340",
"72751756268789884712810101003534450503",
"314070120765545521861021195160721661288",
"163275361520424784336712083888861921840",
"80433659035868977858238900915029720241",
"55330043341397734539339972248704545042",
"79386981174192347288537193082013598235"
]
},
"id": "CVE-2023-6237-3d282511",
"source": "https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a",
"signature_type": "Line",
"signature_version": "v1",
"target": {
"file": "crypto/rsa/rsa_sp800_56b_check.c"
},
"deprecated": false
},
{
"digest": {
"threshold": 0.9,
"line_hashes": [
"5799985256469090440161975918621279176",
"231956326038171660204156138522531293340",
"72751756268789884712810101003534450503",
"314070120765545521861021195160721661288",
"163275361520424784336712083888861921840",
"80433659035868977858238900915029720241",
"55330043341397734539339972248704545042",
"79386981174192347288537193082013598235"
]
},
"id": "CVE-2023-6237-7dd742ac",
"source": "https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d",
"signature_type": "Line",
"signature_version": "v1",
"target": {
"file": "crypto/rsa/rsa_sp800_56b_check.c"
},
"deprecated": false
},
{
"digest": {
"function_hash": "36262343259786368621085857695218833956",
"length": 1258.0
},
"id": "CVE-2023-6237-8aca94dc",
"source": "https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a",
"signature_type": "Function",
"signature_version": "v1",
"target": {
"file": "crypto/rsa/rsa_sp800_56b_check.c",
"function": "ossl_rsa_sp800_56b_check_public"
},
"deprecated": false
},
{
"digest": {
"threshold": 0.9,
"line_hashes": [
"5799985256469090440161975918621279176",
"231956326038171660204156138522531293340",
"72751756268789884712810101003534450503",
"314070120765545521861021195160721661288",
"163275361520424784336712083888861921840",
"80433659035868977858238900915029720241",
"55330043341397734539339972248704545042",
"79386981174192347288537193082013598235"
]
},
"id": "CVE-2023-6237-98851d99",
"source": "https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294",
"signature_type": "Line",
"signature_version": "v1",
"target": {
"file": "crypto/rsa/rsa_sp800_56b_check.c"
},
"deprecated": false
},
{
"digest": {
"function_hash": "36262343259786368621085857695218833956",
"length": 1258.0
},
"id": "CVE-2023-6237-e95520da",
"source": "https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294",
"signature_type": "Function",
"signature_version": "v1",
"target": {
"file": "crypto/rsa/rsa_sp800_56b_check.c",
"function": "ossl_rsa_sp800_56b_check_public"
},
"deprecated": false
}
]
}