CVE-2020-24659

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.
Overview
  • CVE ID
  • CVE-2020-24659
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-09-04T15:15:10
  • Last Modified Date
  • 2023-02-27T15:30:06
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* 1 OR 3.6.15
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://gitlab.com/gnutls/gnutls/-/issues/1071 Exploit Third Party Advisory
https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 Vendor Advisory
https://security.gentoo.org/glsa/202009-01 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200911-0006/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ Third Party Advisory
https://usn.ubuntu.com/4491-1/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-24659
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24659
History
Created Old Value New Value Data Type Notes
2022-05-10 16:22:10 Added to TrackCVE
2022-12-04 22:04:54 2020-09-04T15:15Z 2020-09-04T15:15:10 CVE Published Date updated
2022-12-04 22:04:54 2020-10-26T16:15:13 CVE Modified Date updated
2022-12-04 22:04:54 Modified Vulnerability Status updated
2023-01-26 18:10:12 Modified Undergoing Analysis Vulnerability Status updated
2023-01-26 18:10:13 Weakness Enumeration update
2023-02-27 16:11:18 2023-02-27T15:30:06 CVE Modified Date updated
2023-02-27 16:11:18 Undergoing Analysis Analyzed Vulnerability Status updated