CVE-2020-1967

MEDIUM

Description

Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f).

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html

http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html

http://seclists.org/fulldisclosure/2020/May/5

http://www.openwall.com/lists/oss-security/2020/04/22/2

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=eb563247aef3e83dda7679c43f9649270462e5b1

https://github.com/irsl/CVE-2020-1967

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

https://lists.fedoraproject.org/archives/list/[email protected]/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/

https://lists.fedoraproject.org/archives/list/[email protected]/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/

https://lists.fedoraproject.org/archives/list/[email protected]/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc

https://security.gentoo.org/glsa/202004-10

https://security.netapp.com/advisory/ntap-20200424-0003/

https://security.netapp.com/advisory/ntap-20200717-0004/

https://www.debian.org/security/2020/dsa-4661

https://www.openssl.org/news/secadv/20200421.txt

https://www.oracle.com/security-alerts/cpujan2021.html

https://www.oracle.com/security-alerts/cpujul2020.html

https://www.oracle.com/security-alerts/cpuoct2020.html

https://www.synology.com/security/advisory/Synology_SA_20_05

https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL

https://www.tenable.com/security/tns-2020-03

https://www.tenable.com/security/tns-2020-04

https://www.tenable.com/security/tns-2020-11

Details

Source: MITRE

Published: 2020-04-21

Updated: 2021-02-09

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* versions from 1.1.1d to 1.1.1f (inclusive)

Configuration 2

OR

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 3

OR

cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:*

Configuration 4

OR

cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*

cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

Configuration 5

OR

cpe:2.3:a:oracle:enterprise_manager_for_storage_management:13.3.0.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:enterprise_manager_for_storage_management:13.4.0.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* versions up to 5.6.48 (inclusive)

cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* versions from 5.7.0 to 5.7.30 (inclusive)

cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:* versions from 8.0.0 to 8.0.20 (inclusive)

cpe:2.3:a:oracle:mysql_connectors:*:*:*:*:*:*:*:* versions up to 8.0.20 (inclusive)

cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:* versions up to 4.0.12 (inclusive)

cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:* versions from 8.0.0 to 8.0.20 (inclusive)

cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* versions up to 8.0.21 (inclusive)

cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:*

cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*

cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:*

Configuration 6

OR

cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:windows:*:*

cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:*

cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:*

cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*

cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*

cpe:2.3:a:netapp:smi-s_provider:-:*:*:*:*:*:*:*

cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*

cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*

cpe:2.3:o:netapp:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*

Configuration 7

OR

cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

Configuration 8

OR

cpe:2.3:a:jdedwards:enterpriseone:*:*:*:*:*:*:*:*

Tenable Plugins

View all (22 total)

IDNameProductFamilySeverity
144584Tenable SecurityCenter < 5.17.0 Multiple Vulnerabilities (TNS-2020-11)NessusMisc.
medium
142212Oracle Fusion Middleware Oracle HTTP Server (Oct 2020 CPU)NessusWeb Servers
high
141809Oracle Enterprise Manager Cloud Control (Oct 2020 CPU)NessusMisc.
medium
138995SUSE SLED15 / SLES15 Security Update : rust, rust-cbindgen (SUSE-SU-2020:2041-1)NessusSuSE Local Security Checks
medium
138732openSUSE Security Update : rust / rust-cbindgen (openSUSE-2020-945)NessusSuSE Local Security Checks
medium
138725openSUSE Security Update : rust / rust-cbindgen (openSUSE-2020-933)NessusSuSE Local Security Checks
medium
138607Oracle MySQL Connectors (Jul 2020 CPU)NessusMisc.
medium
138571MySQL 5.6.x < 5.6.49 Multiple Vulnerabilities (Jul 2020 CPU)NessusDatabases
medium
138570MySQL 5.7.x < 5.7.31 Multiple Vulnerabilities (Jul 2020 CPU)NessusDatabases
medium
138568MySQL Enterprise Monitor 4.0.x < 4.0.13.5349 / 8.0.x < 8.0.21.1240 (Jul 2020 CPU)NessusCGI abuses
medium
138560MySQL 8.0.x < 8.0.21 Multiple Vulnerabilities (Jul 2020 CPU)NessusDatabases
medium
137757Tenable Nessus Agent < 7.6.3 Third Party Vulnerability (OpenSSL) (TNS-2020-03)NessusMisc.
medium
137031EulerOS 2.0 SP5 : openssl111d (EulerOS-SA-2020-1613)NessusHuawei Local Security Checks
medium
136439Fedora 31 : 1:openssl (2020-d7b29838f6)NessusFedora Local Security Checks
medium
136304FreeBSD : Gitlab -- Multiple Vulnerabilities (e8483115-8b8e-11ea-bdcf-001b217b3468)NessusFreeBSD Local Security Checks
medium
136155Fedora 30 : 1:openssl (2020-da2d1ef2d7)NessusFedora Local Security Checks
medium
135946GLSA-202004-10 : OpenSSL: Multiple vulnerabilitiesNessusGentoo Local Security Checks
medium
135919OpenSSL 1.1.1 < 1.1.1g VulnerabilityNessusWeb Servers
medium
135893SUSE SLES12 Security Update : openssl-1_1 (SUSE-SU-2020:1058-1)NessusSuSE Local Security Checks
medium
135880FreeBSD : OpenSSL remote denial of service vulnerability (012809ce-83f3-11ea-92ab-00163e433440)NessusFreeBSD Local Security Checks
medium
135879Debian DSA-4661-1 : openssl - security updateNessusDebian Local Security Checks
medium
135873Photon OS 3.0: Nxtgn PHSA-2020-3.0-0082NessusPhotonOS Local Security Checks
medium