CVE-2020-11501
GnuTLS DTLS Inadequate Randomness Vulnerability
Description
GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.
INFO
Published Date :
April 3, 2020, 1:15 p.m.
Last Modified :
Nov. 7, 2023, 3:14 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
2.2
Public PoC/Exploit Available at Github
CVE-2020-11501 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-2020-11501
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-2020-11501.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html | Third Party Advisory |
| https://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2 | Patch Third Party Advisory |
| https://gitlab.com/gnutls/gnutls/-/issues/960 | Issue Tracking Patch Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ | |
| https://security.gentoo.org/glsa/202004-06 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200416-0002/ | Third Party Advisory |
| https://usn.ubuntu.com/4322-1/ | Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4652 | Third Party Advisory |
| https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31 | 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).
A command line tool which provides an alternative interface to snyk test
snyk
Makefile Dockerfile Crystal Open Policy Agent
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-11501 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-11501 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/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-327 CWE-330 -
Modified Analysis by [email protected]
Sep. 09, 2020
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202004-06 No Types Assigned https://security.gentoo.org/glsa/202004-06 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:gnutls:gnutls:*:*:*:*:*:*:*:* versions from (including) 3.6.3 up to (excluding) 3.6.13 OR *cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* versions from (including) 3.6.3 up to (excluding) 3.6.13 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 12, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202004-06 [No Types Assigned] -
CVE Modified by [email protected]
May. 08, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ [No Types Assigned] -
CVE Modified by [email protected]
May. 08, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ [No Types Assigned] -
CPE Deprecation Remap by [email protected]
May. 04, 2020
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* OR *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* -
Modified Analysis by [email protected]
Apr. 22, 2020
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N) Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:N) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20200416-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20200416-0002/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4322-1/ No Types Assigned https://usn.ubuntu.com/4322-1/ Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* OR *cpe:2.3:a:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 21, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4322-1/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 16, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200416-0002/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 11, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 06, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Changed Reference Type https://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2 No Types Assigned https://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2 Patch, Third Party Advisory Changed Reference Type https://gitlab.com/gnutls/gnutls/-/issues/960 No Types Assigned https://gitlab.com/gnutls/gnutls/-/issues/960 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4652 No Types Assigned https://www.debian.org/security/2020/dsa-4652 Third Party Advisory Changed Reference Type https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31 No Types Assigned https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31 Vendor Advisory Added CWE NIST CWE-327 Added CPE Configuration OR *cpe:2.3:a:gnutls:gnutls:*:*:*:*:*:*:*:* versions from (including) 3.6.3 up to (excluding) 3.6.13 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 04, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4652 [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-2020-11501 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-2020-11501
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.49 }} -0.01%
score
0.76320
percentile