CVE - CVE-2020-1967

CVE-ID
CVE-2020-1967	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=eb563247aef3e83dda7679c43f9649270462e5b1 URL:https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=eb563247aef3e83dda7679c43f9649270462e5b1 CONFIRM:https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440 URL:https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440 CONFIRM:https://security.netapp.com/advisory/ntap-20200424-0003/ URL:https://security.netapp.com/advisory/ntap-20200424-0003/ CONFIRM:https://security.netapp.com/advisory/ntap-20200717-0004/ URL:https://security.netapp.com/advisory/ntap-20200717-0004/ CONFIRM:https://www.openssl.org/news/secadv/20200421.txt URL:https://www.openssl.org/news/secadv/20200421.txt CONFIRM:https://www.synology.com/security/advisory/Synology_SA_20_05 URL:https://www.synology.com/security/advisory/Synology_SA_20_05 CONFIRM:https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL URL:https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL CONFIRM:https://www.tenable.com/security/tns-2020-03 URL:https://www.tenable.com/security/tns-2020-03 CONFIRM:https://www.tenable.com/security/tns-2020-04 URL:https://www.tenable.com/security/tns-2020-04 CONFIRM:https://www.tenable.com/security/tns-2020-11 URL:https://www.tenable.com/security/tns-2020-11 CONFIRM:https://www.tenable.com/security/tns-2021-10 URL:https://www.tenable.com/security/tns-2021-10 DEBIAN:DSA-4661 URL:https://www.debian.org/security/2020/dsa-4661 FEDORA:FEDORA-2020-d7b29838f6 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/ FEDORA:FEDORA-2020-da2d1ef2d7 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/ FEDORA:FEDORA-2020-fcc91a28e8 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/ FREEBSD:FreeBSD-SA-20:11 URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc FULLDISC:20200501 CVE-2020-1967: proving sigalg != NULL URL:http://seclists.org/fulldisclosure/2020/May/5 GENTOO:GLSA-202004-10 URL:https://security.gentoo.org/glsa/202004-10 MISC:http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html URL:http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html MISC:https://github.com/irsl/CVE-2020-1967 URL:https://github.com/irsl/CVE-2020-1967 MISC:https://www.oracle.com//security-alerts/cpujul2021.html URL:https://www.oracle.com//security-alerts/cpujul2021.html MISC:https://www.oracle.com/security-alerts/cpuApr2021.html URL:https://www.oracle.com/security-alerts/cpuApr2021.html MISC:https://www.oracle.com/security-alerts/cpujan2021.html URL:https://www.oracle.com/security-alerts/cpujan2021.html MISC:https://www.oracle.com/security-alerts/cpujul2020.html URL:https://www.oracle.com/security-alerts/cpujul2020.html MISC:https://www.oracle.com/security-alerts/cpuoct2020.html URL:https://www.oracle.com/security-alerts/cpuoct2020.html MISC:https://www.oracle.com/security-alerts/cpuoct2021.html URL:https://www.oracle.com/security-alerts/cpuoct2021.html MLIST:[oss-security] 20200422 [CVE-2020-1967] OpenSSL 1.1.1d+ Segmentation fault in SSL_check_chain URL:http://www.openwall.com/lists/oss-security/2020/04/22/2 MLIST:[tomcat-dev] 20200422 Re: Time for Tomcat Native 1.2.24? URL:https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345@%3Cdev.tomcat.apache.org%3E MLIST:[tomcat-dev] 20200422 Time for Tomcat Native 1.2.24? URL:https://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee@%3Cdev.tomcat.apache.org%3E MLIST:[tomcat-dev] 20200423 Re: Time for Tomcat Native 1.2.24? URL:https://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064@%3Cdev.tomcat.apache.org%3E SUSE:openSUSE-SU-2020:0933 URL:http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html SUSE:openSUSE-SU-2020:0945 URL:http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html
Assigning CNA
OpenSSL Software Foundation
Date Record Created
20191203	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20191203)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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