CVE-2021-3712
- Source
- https://cve.org/CVERecord?id=CVE-2021-3712
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3712.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3712
- Aliases
- Downstream
- Related
- Published
- 2021-08-24T15:15:09.533Z
- Modified
- 2026-04-16T04:37:34.072121622Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
ASN.1 strings are represented internally within OpenSSL as an ASN1STRING structure which contains a buffer holding the string data and a field holding the buffer length. This contrasts with normal C strings which are repesented as a buffer for the string data which is terminated with a NUL (0) byte. Although not a strict requirement, ASN.1 strings that are parsed using OpenSSL's own "d2i" functions (and other similar parsing functions) as well as any string whose value has been set with the ASN1STRINGset() function will additionally NUL terminate the byte array in the ASN1STRING structure. However, it is possible for applications to directly construct valid ASN1STRING structures which do not NUL terminate the byte array by directly setting the "data" and "length" fields in the ASN1STRING array. This can also happen by using the ASN1STRINGset0() function. Numerous OpenSSL functions that print ASN.1 data have been found to assume that the ASN1STRING byte array will be NUL terminated, even though this is not guaranteed for strings that have been directly constructed. Where an application requests an ASN.1 structure to be printed, and where that ASN.1 structure contains ASN1STRINGs that have been directly constructed by the application without NUL terminating the "data" field, then a read buffer overrun can occur. The same thing can also occur during name constraints processing of certificates (for example if a certificate has been directly constructed by the application instead of loading it via the OpenSSL parsing functions, and the certificate contains non NUL terminated ASN1STRING structures). It can also occur in the X509get1email(), X509REQget1email() and X509get1ocsp() functions. If a malicious actor can cause an application to directly construct an ASN1_STRING and then process it through one of the affected OpenSSL functions then this issue could be hit. This might result in a crash (causing a Denial of Service attack). It could also result in the disclosure of private memory contents (such as private keys, or sensitive plaintext). Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k). Fixed in OpenSSL 1.0.2za (Affected 1.0.2-1.0.2y).
- References
-
- https://lists.apache.org/thread.html/rad5d9f83f0d11fb3f8bb148d179b8a9ad7c6a17f18d70e5805a713d1%40%3Cdev.tomcat.apache.org%3E
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=94d23fcff9b2a7a8368dfe52214d5c2569882c11
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ccb0a11145ee72b042d10593a64eaf9e8a55ec12
- https://lists.apache.org/thread.html/r18995de860f0e63635f3008fd2a6aca82394249476d21691e7c59c9e%40%3Cdev.tomcat.apache.org%3E
- http://www.openwall.com/lists/oss-security/2021/08/26/2
- https://kc.mcafee.com/corporate/index?page=content&id=SB10366
- https://lists.debian.org/debian-lts-announce/2021/09/msg00021.html
- https://www.debian.org/security/2021/dsa-4963
- https://security.gentoo.org/glsa/202209-02
- https://security.gentoo.org/glsa/202210-02
- https://security.netapp.com/advisory/ntap-20240621-0006/
- https://www.openssl.org/news/secadv/20210824.txt
- https://www.tenable.com/security/tns-2021-16
- https://lists.debian.org/debian-lts-announce/2021/09/msg00014.html
- https://security.netapp.com/advisory/ntap-20210827-0010/
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-244969.pdf
- https://www.tenable.com/security/tns-2022-02
Affected packages
Git / github.com/mysql/mysql-server
Affected ranges
- Type
- GIT
- Repo
- https://github.com/mysql/mysql-server
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroducedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "versions": [ { "introduced": "0" }, { "last_affected": "9.0" }, { "introduced": "0" }, { "last_affected": "8.0.27" }, { "introduced": "0" }, { "last_affected": "8.0.25" }, { "introduced": "5.7.0" }, { "last_affected": "5.7.35" }, { "introduced": "8.0.0" }, { "last_affected": "8.0.26" }, { "introduced": "0" }, { "last_affected": "8.0.26" }, { "introduced": "0" }, { "last_affected": "8.4" }, { "introduced": "0" }, { "last_affected": "9.0" }, { "introduced": "0" }, { "last_affected": "8.4.5" }, { "introduced": "0" }, { "last_affected": "8.4" }, { "introduced": "0" }, { "last_affected": "9.0" }, { "introduced": "0" }, { "last_affected": "a9.4" } ] }
- Type
- GIT
- Repo
- https://github.com/openssl/openssl
- Events
-
IntroducedFixedIntroducedFixedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affectedIntroduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "versions": [ { "introduced": "1.0.2" }, { "fixed": "1.0.2za" }, { "introduced": "1.1.1" }, { "fixed": "1.1.1l" }, { "introduced": "0" }, { "last_affected": "3.2.0" }, { "introduced": "0" }, { "last_affected": "3.3.0" } ] }
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_0_2
OpenSSL_1_0_2-beta1
OpenSSL_1_0_2-beta2
OpenSSL_1_0_2-beta3
OpenSSL_1_0_2-post-auto-reformat
OpenSSL_1_0_2-post-reformat
OpenSSL_1_0_2-pre-auto-reformat
OpenSSL_1_0_2-pre-reformat
OpenSSL_1_0_2a
OpenSSL_1_0_2b
OpenSSL_1_0_2c
OpenSSL_1_0_2d
OpenSSL_1_0_2e
OpenSSL_1_0_2f
OpenSSL_1_0_2g
OpenSSL_1_0_2h
OpenSSL_1_0_2i
OpenSSL_1_0_2j
OpenSSL_1_0_2k
OpenSSL_1_0_2l
OpenSSL_1_0_2m
OpenSSL_1_0_2n
OpenSSL_1_0_2o
OpenSSL_1_0_2p
OpenSSL_1_0_2q
OpenSSL_1_0_2r
OpenSSL_1_0_2s
OpenSSL_1_0_2t
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
OpenSSL_1_1_1a
OpenSSL_1_1_1b
OpenSSL_1_1_1c
OpenSSL_1_1_1d
OpenSSL_1_1_1e
OpenSSL_1_1_1f
OpenSSL_1_1_1g
OpenSSL_1_1_1h
OpenSSL_1_1_1i
OpenSSL_1_1_1j
OpenSSL_1_1_1k
OpenSSL_1_1_1l
OpenSSL_1_1_1m
OpenSSL_1_1_1n
OpenSSL_1_1_1o
OpenSSL_1_1_1p
OpenSSL_1_1_1q
OpenSSL_1_1_1r
OpenSSL_1_1_1s
OpenSSL_1_1_1t
OpenSSL_1_1_1u
OpenSSL_1_1_1v
master-post-auto-reformat
master-post-reformat
master-pre-auto-reformat
master-pre-reformat
mysql-3.*
mysql-3.23.22-beta
mysql-3.23.28-gamma
mysql-3.23.30-gamma
mysql-3.23.31
mysql-3.23.32
mysql-3.23.33
mysql-3.23.36
mysql-4.*
mysql-4.0.2
mysql-4.0.4
mysql-5.*
mysql-5.1.4
mysql-5.7.31
mysql-5.7.32
mysql-5.7.35
mysql-8.*
mysql-8.0.24
mysql-8.0.25
mysql-8.0.26
mysql-8.0.27
mysql-8.4.0
mysql-8.4.1
mysql-8.4.3
mysql-8.4.4
mysql-8.4.5
mysql-9.*
mysql-9.0.0
mysql-9.0.0-release
mysql-9.4.0
mysql-cluster-8.*
mysql-cluster-8.0.24
mysql-cluster-8.0.25
mysql-cluster-8.0.26
mysql-cluster-8.0.27
mysql-cluster-8.4.0
mysql-cluster-8.4.1
mysql-cluster-8.4.3
mysql-cluster-8.4.4
mysql-cluster-8.4.5
mysql-cluster-9.*
mysql-cluster-9.0.0
mysql-cluster-9.4.0
openssl-3.*
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-3.2.0
openssl-3.2.0-alpha1
openssl-3.2.0-alpha2
openssl-3.2.0-beta1
openssl-3.3.0
openssl-3.3.0-alpha1
openssl-3.3.0-beta1
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3712.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "11.0"
}
]
},
{
"events": [
{
"introduced": "11.0"
},
{
"last_affected": "11.50.2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.10.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-NA"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_10"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_6"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_7"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_8"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.10.0-update_9"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.0"
}
]
},
{
"events": [
{
"introduced": "5.16.0"
},
{
"last_affected": "5.19.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "11.1.2.4.047"
}
]
},
{
"events": [
{
"introduced": "21.0"
},
{
"fixed": "21.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "21.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.57"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.58"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.59"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "18.1.0.1.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.8"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.1.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.9.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.7.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.15.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.2.5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.2.1.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.3.1.1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.2.6.3"
}
]
}
]
vanir_signatures
[
{
"signature_type": "Line",
"signature_version": "v1",
"deprecated": false,
"digest": {
"line_hashes": [
"28170854778703993674264004058177114599",
"73132526844288570625317440636111911761",
"177405411499435185068645597737938634778",
"224809958623850711330610094965797758930",
"295554444428855106393106961197201359586"
],
"threshold": 0.9
},
"source": "https://github.com/openssl/openssl/commit/e04bd3433fd84e1861bf258ea37928d9845e6a86",
"target": {
"file": "include/openssl/opensslv.h"
},
"id": "CVE-2021-3712-c377fa22"
},
{
"target": {
"file": "crypto/opensslv.h"
},
"signature_type": "Line",
"deprecated": false,
"digest": {
"line_hashes": [
"251633914150035957322733061977107206211",
"338514574181828579838011565939158652696",
"76638288692106140328510055542557597351",
"142922657400765574308962710386922248045",
"71649992455794854055653842592139575350",
"65527166711110472566013424527579064967",
"253196866009476977787139000804413898733",
"172177136897997206866313011107384691461"
],
"threshold": 0.9
},
"signature_version": "v1",
"source": "https://github.com/openssl/openssl/commit/e818b74be2170fbe957a07b0da4401c2b694b3b8",
"id": "CVE-2021-3712-e051451f"
}
]
vanir_signatures_modified
"2026-04-11T16:26:03Z"