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Vulnerability Details : CVE-2020-1971

The X.509 GeneralName type is a generic type for representing different types of names. One of those name types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1) Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an attacker can control both items being compared then that attacker could trigger a crash. For example if the attacker can trick a client or server into checking a malicious certificate against a malicious CRL then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a certificate. This checking happens prior to the signatures on the certificate and CRL being verified. OpenSSL's s_server, s_client and verify tools have support for the "-crl_download" option which implements automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue. Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected 1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w).
Publish Date : 2020-12-08 Last Update Date : 2021-09-16
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
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) Denial Of Service
CWE ID 476

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:5476: openssl security and bug fix update (Important) oval:com.redhat.rhsa:def:20205476 unix
RHSA-2020:5566: openssl security update (Important) oval:com.redhat.rhsa:def:20205566 unix
RHSA-2021:0056: openssl security update (Important) oval:com.redhat.rhsa:def:20210056 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-2020-1971

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
5 Application Netapp Active Iq Unified Manager - * * * Version Details Vulnerabilities
6 Application Netapp Active Iq Unified Manager - * * * Version Details Vulnerabilities
7 Application Netapp Clustered Data Ontap Antivirus Connector - * * * Version Details Vulnerabilities
8 Application Netapp Data Ontap - * * * Version Details Vulnerabilities
9 Application Netapp E-series Santricity Os Controller * * * * Version Details Vulnerabilities
10 Hardware Netapp Hci Compute Node - * * * Version Details Vulnerabilities
11 Application Netapp Hci Management Node - * * * Version Details Vulnerabilities
12 Hardware Netapp Hci Storage Node - * * * Version Details Vulnerabilities
13 Application Netapp Manageability Software Development Kit - * * * Version Details Vulnerabilities
14 Application Netapp Oncommand Insight - * * * Version Details Vulnerabilities
15 Application Netapp Oncommand Workflow Automation - * * * Version Details Vulnerabilities
16 Application Netapp Plug-in For Symantec Netbackup - * * * Version Details Vulnerabilities
17 Application Netapp Santricity Smi-s Provider - * * * Version Details Vulnerabilities
18 Application Netapp Snapcenter - * * * Version Details Vulnerabilities
19 Application Netapp Solidfire - * * * Version Details Vulnerabilities
20 Application Openssl Openssl * * * * Version Details Vulnerabilities
21 Application Oracle Api Gateway 11.1.2.4.0 * * * Version Details Vulnerabilities
22 Application Oracle Business Intelligence 5.5.0.0.0 * * * Version Details Vulnerabilities
23 Application Oracle Business Intelligence 12.2.1.3.0 * * * Version Details Vulnerabilities
24 Application Oracle Business Intelligence 12.2.1.4.0 * * * Version Details Vulnerabilities
25 Application Oracle Communications Session Border Controller Cz8.2 * * * Version Details Vulnerabilities
26 Application Oracle Communications Session Border Controller Cz8.3 * * * Version Details Vulnerabilities
27 Application Oracle Communications Session Border Controller Cz8.4 * * * Version Details Vulnerabilities
28 Application Oracle Communications Session Router Cz8.2 * * * Version Details Vulnerabilities
29 Application Oracle Communications Session Router Cz8.3 * * * Version Details Vulnerabilities
30 Application Oracle Communications Session Router Cz8.4 * * * Version Details Vulnerabilities
31 Application Oracle Communications Subscriber-aware Load Balancer Cz8.2 * * * Version Details Vulnerabilities
32 Application Oracle Communications Subscriber-aware Load Balancer Cz8.3 * * * Version Details Vulnerabilities
33 Application Oracle Communications Subscriber-aware Load Balancer Cz8.4 * * * Version Details Vulnerabilities
34 Application Oracle Communications Unified Session Manager Scz8.2.5 * * * Version Details Vulnerabilities
35 Application Oracle Enterprise Communications Broker Pcz3.1 * * * Version Details Vulnerabilities
36 Application Oracle Enterprise Communications Broker Pcz3.2 * * * Version Details Vulnerabilities
37 Application Oracle Enterprise Communications Broker Pcz3.3 * * * Version Details Vulnerabilities
38 Application Oracle Enterprise Manager Base Platform 13.3.0.0 * * * Version Details Vulnerabilities
39 Application Oracle Enterprise Manager Base Platform 13.4.0.0 * * * Version Details Vulnerabilities
40 Application Oracle Enterprise Manager Ops Center 12.4.0.0 * * * Version Details Vulnerabilities
41 Application Oracle Enterprise Session Border Controller Cz8.2 * * * Version Details Vulnerabilities
42 Application Oracle Enterprise Session Border Controller Cz8.3 * * * Version Details Vulnerabilities
43 Application Oracle Enterprise Session Border Controller Cz8.4 * * * Version Details Vulnerabilities
44 Application Oracle Essbase 21.2 * * * Version Details Vulnerabilities
45 Application Oracle Graalvm 19.3.4 * * * Version Details Vulnerabilities
46 Application Oracle Graalvm 20.3.0 * * * Version Details Vulnerabilities
47 Application Oracle Jd Edwards Enterpriseone Tools * * * * Version Details Vulnerabilities
48 Application Oracle Jd Edwards World Security A9.4 * * * Version Details Vulnerabilities
49 Application Oracle Mysql * * * * Version Details Vulnerabilities
50 Application Oracle Mysql Server * * * * Version Details Vulnerabilities
51 Application Oracle Peoplesoft Enterprise Peopletools 8.56 * * * Version Details Vulnerabilities
52 Application Oracle Peoplesoft Enterprise Peopletools 8.57 * * * Version Details Vulnerabilities
53 Application Oracle Peoplesoft Enterprise Peopletools 8.58 * * * Version Details Vulnerabilities
54 Application Tenable Log Correlation Engine * * * * Version Details Vulnerabilities
55 Application Tenable Nessus Network Monitor * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 2
Fedoraproject Fedora 2
Netapp Active Iq Unified Manager 2
Netapp Clustered Data Ontap Antivirus Connector 1
Netapp Data Ontap 1
Netapp E-series Santricity Os Controller 1
Netapp Hci Compute Node 1
Netapp Hci Management Node 1
Netapp Hci Storage Node 1
Netapp Manageability Software Development Kit 1
Netapp Oncommand Insight 1
Netapp Oncommand Workflow Automation 1
Netapp Plug-in For Symantec Netbackup 1
Netapp Santricity Smi-s Provider 1
Netapp Snapcenter 1
Netapp Solidfire 1
Openssl Openssl 1
Oracle Api Gateway 1
Oracle Business Intelligence 3
Oracle Communications Session Border Controller 3
Oracle Communications Session Router 3
Oracle Communications Subscriber-aware Load Balancer 3
Oracle Communications Unified Session Manager 1
Oracle Enterprise Communications Broker 3
Oracle Enterprise Manager Base Platform 2
Oracle Enterprise Manager Ops Center 1
Oracle Enterprise Session Border Controller 3
Oracle Essbase 1
Oracle Graalvm 2
Oracle Jd Edwards Enterpriseone Tools 1
Oracle Jd Edwards World Security 1
Oracle Mysql 1
Oracle Mysql Server 1
Oracle Peoplesoft Enterprise Peopletools 3
Tenable Log Correlation Engine 1
Tenable Nessus Network Monitor 1

- References For CVE-2020-1971

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E
MLIST [tomcat-dev] 20210207 [Bug 65126] New: A security vulnerability cve-2020-1971 in Tomcat dependency Library in version 9.0.40.
https://www.oracle.com/security-alerts/cpujan2021.html
http://www.openwall.com/lists/oss-security/2021/09/14/2
MLIST [oss-security] 20210914 Re: Oracle Solaris membership in the distros list
https://www.oracle.com//security-alerts/cpujul2021.html
N/A N/A
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.tenable.com/security/tns-2021-10 CONFIRM
https://security.netapp.com/advisory/ntap-20210513-0002/ CONFIRM
https://www.tenable.com/security/tns-2021-09 CONFIRM
https://lists.debian.org/debian-lts-announce/2020/12/msg00020.html
MLIST [debian-lts-announce] 20201214 [SECURITY] [DLA 2492-1] openssl security update
https://lists.fedoraproject.org/archives/list/[email protected]/message/DGSI34Y5LQ5RYXN4M2I5ZQT65LFVDOUU/
FEDORA FEDORA-2020-ef1870065a
https://lists.apache.org/thread.html/[email protected]%3Ccommits.pulsar.apache.org%3E
MLIST [pulsar-commits] 20201216 [GitHub] [pulsar] phijohns-tibco opened a new issue #8978: OpenSSL needs to be updated to 1.1.1i current version is unsupported.
https://security.netapp.com/advisory/ntap-20201218-0005/ CONFIRM
https://lists.fedoraproject.org/archives/list/[email protected]/message/PWPSSZNZOBJU2YR6Z4TGHXKYW3YP5QG7/
FEDORA FEDORA-2020-a31b01e945
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2154ab83e14ede338d2ede9bbe5cdfce5d5a6c9e CONFIRM
https://security.gentoo.org/glsa/202012-13
GENTOO GLSA-202012-13
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44676 CONFIRM
https://www.debian.org/security/2020/dsa-4807
DEBIAN DSA-4807
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:33.openssl.asc
FREEBSD FreeBSD-SA-20:33
https://lists.debian.org/debian-lts-announce/2020/12/msg00021.html
MLIST [debian-lts-announce] 20201214 [SECURITY] [DLA 2493-1] openssl1.0 security update
https://www.tenable.com/security/tns-2020-11 CONFIRM
https://www.openssl.org/news/secadv/20201208.txt CONFIRM
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=f960d81215ebf3f65e03d4d5d857fb9b666d6920 CONFIRM

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0

- Metasploit Modules Related To CVE-2020-1971

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


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