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CVE-2020-1967

PUBLISHED 17.09.2024

CNA: openssl

Segmentation fault in SSL_check_chain

Обновлено: 20.10.2021
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).

БДУ ФСТЭК

Идентификатор Описание
BDU:2020-02873 Уязвимость функции SSL_check_chain реализации протокола TLS библиотеки OpenSSL, связанная с с возможностью разыменования нулевого указателя в результате неправильной обработки TLS расширения "signature_algorithms_cert", позволяющая нарушителю вызвать отказ в обслуживании

Доп. Информация

Product Status

OpenSSL
Product: OpenSSL
Vendor: OpenSSL
Default status: Не определен
Версии:
Затронутые версии Статус
Наблюдалось в версии Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f) affected
 

Ссылки

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc
https://www.debian.org/security/2020/dsa-4661
http://www.openwall.com/lists/oss-security/2020/04/22/2
https://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee%40%3Cdev.tomcat.apache.or...
https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345%40%3Cdev.tomcat.apache.or...
https://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064%40%3Cdev.tomcat.apache.or...
https://security.gentoo.org/glsa/202004-10
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDB...
http://seclists.org/fulldisclosure/2020/May/5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPY...
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.tenable.com/security/tns-2020-03
https://www.openssl.org/news/secadv/20200421.txt
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=eb563247aef3e83dda7679c43f9649270462e5b1
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440
https://security.netapp.com/advisory/ntap-20200424-0003/
https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL
https://github.com/irsl/CVE-2020-1967
http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html
https://www.synology.com/security/advisory/Synology_SA_20_05
https://www.tenable.com/security/tns-2020-04
https://www.oracle.com/security-alerts/cpuoct2020.html
https://security.netapp.com/advisory/ntap-20200717-0004/
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.tenable.com/security/tns-2020-11
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.tenable.com/security/tns-2021-10
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html

CVE Program Container

Обновлено: 04.08.2024
SSVC and KEV, plus CVSS and CWE if not provided by the CNA.

Ссылки

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc
https://www.debian.org/security/2020/dsa-4661
http://www.openwall.com/lists/oss-security/2020/04/22/2
https://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee%40%3Cdev.tomcat.apache.or...
https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345%40%3Cdev.tomcat.apache.or...
https://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064%40%3Cdev.tomcat.apache.or...
https://security.gentoo.org/glsa/202004-10
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDB...
http://seclists.org/fulldisclosure/2020/May/5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPY...
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.tenable.com/security/tns-2020-03
https://www.openssl.org/news/secadv/20200421.txt
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=eb563247aef3e83dda7679c43f9649270462e5b1
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440
https://security.netapp.com/advisory/ntap-20200424-0003/
https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL
https://github.com/irsl/CVE-2020-1967
http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html
https://www.synology.com/security/advisory/Synology_SA_20_05
https://www.tenable.com/security/tns-2020-04
https://www.oracle.com/security-alerts/cpuoct2020.html
https://security.netapp.com/advisory/ntap-20200717-0004/
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.tenable.com/security/tns-2020-11
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.tenable.com/security/tns-2021-10
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html

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