CVE-2020-24659
"GnuTLS TLS 1.3 NULL Pointer Dereference"
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.
INFO
Published Date :
Sept. 4, 2020, 3:15 p.m.
Last Modified :
Nov. 7, 2023, 3:20 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-24659 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-24659
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-24659.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html | Mailing List Third Party Advisory |
| https://gitlab.com/gnutls/gnutls/-/issues/1071 | Exploit Issue Tracking Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ | |
| https://security.gentoo.org/glsa/202009-01 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200911-0006/ | Third Party Advisory |
| https://usn.ubuntu.com/4491-1/ | Third Party Advisory |
| https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE Data Analysis, CVE Monitor, CVE EXP Prediction Based on Deep Learning. 1999-2020年存量CVE数据分析、监控CVE增量更新、基于深度学习的CVE EXP预测和自动化推送
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-24659 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-24659 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ -
Modified Analysis by [email protected]
Feb. 27, 2023
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html Mailing List, Third Party Advisory Changed Reference Type https://gitlab.com/gnutls/gnutls/-/issues/1071 Exploit, Third Party Advisory https://gitlab.com/gnutls/gnutls/-/issues/1071 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ Mailing List, Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4491-1/ No Types Assigned https://usn.ubuntu.com/4491-1/ Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
Oct. 26, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 26, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html [No Types Assigned] -
CVE Modified by [email protected]
Sep. 25, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 15, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4491-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Sep. 14, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://gitlab.com/gnutls/gnutls/-/issues/1071 No Types Assigned https://gitlab.com/gnutls/gnutls/-/issues/1071 Exploit, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202009-01 No Types Assigned https://security.gentoo.org/glsa/202009-01 Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20200911-0006/ No Types Assigned https://security.netapp.com/advisory/ntap-20200911-0006/ Third Party Advisory Changed Reference Type https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 No Types Assigned https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 Vendor Advisory Added CWE NIST CWE-787 Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* versions up to (excluding) 3.6.15 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 13, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 11, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200911-0006/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 06, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202009-01 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-24659 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-24659
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.42 }} 0.05%
score
0.74535
percentile