CVE-2020-1967
high · 7.5Server 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).
7.5
CVSS
53.3%
EPSS (exploit prob.)
99th
EPSS percentile
2020-04-21
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| openssl | openssl | >= 1.1.1d, <= 1.1.1f |
| debian | debian_linux | 9.0 |
| debian | debian_linux | 10.0 |
| freebsd | freebsd | 12.1 |
| fedoraproject | fedora | 30 |
| fedoraproject | fedora | 31 |
| fedoraproject | fedora | 32 |
| oracle | application_server | 12.1.3 |
| oracle | enterprise_manager_base_platform | 13.4.0.0 |
| oracle | enterprise_manager_for_storage_management | 13.3.0.0 |
| oracle | enterprise_manager_for_storage_management | 13.4.0.0 |
| oracle | enterprise_manager_ops_center | 12.4.0 |
| oracle | http_server | 12.2.1.4.0 |
| oracle | jd_edwards_world_security | a9.4 |
| oracle | mysql | <= 5.6.48 |
| oracle | mysql | >= 5.7.0, <= 5.7.30 |
| oracle | mysql | >= 8.0.0, <= 8.0.20 |
| oracle | mysql_connectors | <= 8.0.20 |
| oracle | mysql_enterprise_monitor | <= 4.0.12 |
| oracle | mysql_enterprise_monitor | >= 8.0.0, <= 8.0.20 |
| oracle | mysql_workbench | <= 8.0.21 |
| oracle | peoplesoft_enterprise_peopletools | 8.56 |
| oracle | peoplesoft_enterprise_peopletools | 8.57 |
| oracle | peoplesoft_enterprise_peopletools | 8.58 |
| oracle | peoplesoft_enterprise_peopletools | 8.59 |
| netapp | active_iq_unified_manager | >= 7.3 |
| netapp | active_iq_unified_manager | >= 9.5 |
| netapp | e-series_performance_analyzer | all versions |
| netapp | oncommand_insight | all versions |
| netapp | oncommand_workflow_automation | all versions |
| netapp | smi-s_provider | all versions |
| netapp | snapcenter | all versions |
| netapp | steelstore_cloud_integrated_storage | all versions |
| broadcom | fabric_operating_system | all versions |
| opensuse | leap | 15.1 |
| opensuse | leap | 15.2 |
| jdedwards | enterpriseone | < 9.2.5.0 |
| tenable | log_correlation_engine | < 6.0.9 |
Check a specific version with /api/v1/cve/match.
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%3Ba=commitdiff%3Bh=eb563247aef3e83dda7679c43f9649270462e5b1
- https://github.com/irsl/CVE-2020-1967
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440
- https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee%40%3Cdev.tomcat.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/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/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2020-1967