CVE-2021-20231

Source
https://cve.org/CVERecord?id=CVE-2021-20231
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20231.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-20231
Downstream
Related
Published
2021-03-12T19:15:13.037Z
Modified
2026-05-18T05:52:39.896497229Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

Database specific
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
                {
                    "last_affected": "34"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "source": "CPE_FIELD",
            "vendor_product": "redhat:enterprise_linux",
            "extracted_events": [
                {
                    "last_affected": "8.0"
                }
            ],
            "cpes": [
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"
            ]
        }
    ]
}
References

Affected packages

Git / github.com/gnutls/gnutls

Affected ranges

Type
GIT
Repo
https://github.com/gnutls/gnutls
Events
Database specific
{
    "cpe": "cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*",
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "3.6.3"
        },
        {
            "fixed": "3.7.1"
        }
    ]
}

Affected versions

3.*
3.6.12
3.6.13
3.6.14
3.7.0
Other
gnutls_3_6_10
gnutls_3_6_11
gnutls_3_6_11_1
gnutls_3_6_12
gnutls_3_6_3
gnutls_3_6_4
gnutls_3_6_5
gnutls_3_6_6
gnutls_3_6_7
gnutls_3_6_9

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20231.json"

Git / gitlab.com/gnutls/gnutls

Affected ranges

Type
GIT
Repo
https://gitlab.com/gnutls/gnutls
Events
Database specific
{
    "cpe": "cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*",
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "3.6.3"
        },
        {
            "fixed": "3.7.1"
        }
    ]
}

Affected versions

3.*
3.6.12
3.6.13
3.6.14
3.7.0
Other
gnutls_3_6_10
gnutls_3_6_11
gnutls_3_6_11_1
gnutls_3_6_12
gnutls_3_6_3
gnutls_3_6_4
gnutls_3_6_5
gnutls_3_6_6
gnutls_3_6_7
gnutls_3_6_9

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20231.json"