7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
openssl is vulnerable to denial of service (DoS). The vulnerability exists as the 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.
lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html
packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html
seclists.org/fulldisclosure/2020/May/5
www.openwall.com/lists/oss-security/2020/04/22/2
git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=eb563247aef3e83dda7679c43f9649270462e5b1
github.com/irsl/CVE-2020-1967
kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440
lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee@%3Cdev.tomcat.apache.org%3E
lists.fedoraproject.org/archives/list/[email protected]/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/
lists.fedoraproject.org/archives/list/[email protected]/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/
lists.fedoraproject.org/archives/list/[email protected]/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/
security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc
security.gentoo.org/glsa/202004-10
security.netapp.com/advisory/ntap-20200424-0003/
security.netapp.com/advisory/ntap-20200717-0004/
www.debian.org/security/2020/dsa-4661
www.openssl.org/news/secadv/20200421.txt
www.oracle.com//security-alerts/cpujul2021.html
www.oracle.com/security-alerts/cpuApr2021.html
www.oracle.com/security-alerts/cpujan2021.html
www.oracle.com/security-alerts/cpujul2020.html
www.oracle.com/security-alerts/cpuoct2020.html
www.oracle.com/security-alerts/cpuoct2021.html
www.synology.com/security/advisory/Synology_SA_20_05
www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL
www.tenable.com/security/tns-2020-03
www.tenable.com/security/tns-2020-04
www.tenable.com/security/tns-2020-11
www.tenable.com/security/tns-2021-10
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P