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Vulnerability Details : CVE-2020-11501

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.
Publish Date : 2020-04-03 Last Update Date : 2021-07-21
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- CVSS Scores & Vulnerability Types

CVSS Score
5.8
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 327

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:1998: gnutls security update (Moderate) oval:com.redhat.rhsa:def:20201998 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2020-11501

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 19.10 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 31 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
5 Application GNU Gnutls * * * * Version Details Vulnerabilities
6 OS Opensuse Leap 15.1 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 1
Debian Debian Linux 1
Fedoraproject Fedora 2
GNU Gnutls 1
Opensuse Leap 1

- References For CVE-2020-11501

https://security.gentoo.org/glsa/202004-06
GENTOO GLSA-202004-06
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/
FEDORA FEDORA-2020-f90fb78f70
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/
FEDORA FEDORA-2020-d14280a6e8
https://usn.ubuntu.com/4322-1/
UBUNTU USN-4322-1
https://gitlab.com/gnutls/gnutls/-/issues/960
https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31
https://www.debian.org/security/2020/dsa-4652
DEBIAN DSA-4652
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html
SUSE openSUSE-SU-2020:0501
https://security.netapp.com/advisory/ntap-20200416-0002/ CONFIRM
https://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2

- Metasploit Modules Related To CVE-2020-11501

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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