CVE-2020-1967 (GCVE-0-2020-1967)
Vulnerability from cvelistv5
Published
2020-04-21 13:45
Modified
2024-09-17 03:13
Severity ?
CWE
  • NULL pointer dereference
Summary
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
openssl-security@openssl.org http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html Mailing List, Third Party Advisory
openssl-security@openssl.org http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html Mailing List, Third Party Advisory
openssl-security@openssl.org http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html Third Party Advisory, VDB Entry
openssl-security@openssl.org http://seclists.org/fulldisclosure/2020/May/5 Mailing List, Third Party Advisory
openssl-security@openssl.org http://www.openwall.com/lists/oss-security/2020/04/22/2 Mailing List, Third Party Advisory
openssl-security@openssl.org https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=eb563247aef3e83dda7679c43f9649270462e5b1
openssl-security@openssl.org https://github.com/irsl/CVE-2020-1967 Exploit, Third Party Advisory
openssl-security@openssl.org https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440 Third Party Advisory
openssl-security@openssl.org https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345%40%3Cdev.tomcat.apache.org%3E
openssl-security@openssl.org https://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064%40%3Cdev.tomcat.apache.org%3E
openssl-security@openssl.org https://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee%40%3Cdev.tomcat.apache.org%3E
openssl-security@openssl.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/
openssl-security@openssl.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/
openssl-security@openssl.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/
openssl-security@openssl.org https://security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc Patch, Third Party Advisory
openssl-security@openssl.org https://security.gentoo.org/glsa/202004-10 Third Party Advisory
openssl-security@openssl.org https://security.netapp.com/advisory/ntap-20200424-0003/ Third Party Advisory
openssl-security@openssl.org https://security.netapp.com/advisory/ntap-20200717-0004/ Third Party Advisory
openssl-security@openssl.org https://www.debian.org/security/2020/dsa-4661 Third Party Advisory
openssl-security@openssl.org https://www.openssl.org/news/secadv/20200421.txt Vendor Advisory
openssl-security@openssl.org https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpuApr2021.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpujan2021.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpujul2020.html Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpuoct2020.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.synology.com/security/advisory/Synology_SA_20_05 Third Party Advisory
openssl-security@openssl.org https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL Third Party Advisory
openssl-security@openssl.org https://www.tenable.com/security/tns-2020-03 Third Party Advisory
openssl-security@openssl.org https://www.tenable.com/security/tns-2020-04 Third Party Advisory
openssl-security@openssl.org https://www.tenable.com/security/tns-2020-11 Third Party Advisory
openssl-security@openssl.org https://www.tenable.com/security/tns-2021-10 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 http://seclists.org/fulldisclosure/2020/May/5 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2020/04/22/2 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=eb563247aef3e83dda7679c43f9649270462e5b1
af854a3a-2127-422b-91ae-364da2661108 https://github.com/irsl/CVE-2020-1967 Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345%40%3Cdev.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108 https://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064%40%3Cdev.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108 https://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee%40%3Cdev.tomcat.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/
af854a3a-2127-422b-91ae-364da2661108 https://security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.gentoo.org/glsa/202004-10 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20200424-0003/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20200717-0004/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.debian.org/security/2020/dsa-4661 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.openssl.org/news/secadv/20200421.txt Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuApr2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpujan2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpujul2020.html Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuoct2020.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.synology.com/security/advisory/Synology_SA_20_05 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/security/tns-2020-03 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/security/tns-2020-04 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/security/tns-2020-11 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/security/tns-2021-10 Third Party Advisory
Impacted products
Vendor Product Version
OpenSSL OpenSSL Version: Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f)
Create a notification for this product.
Show details on NVD website


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  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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