CVE-2020-1967
CVE-2020-1967 · Segmentation fault in SSL_check_chain
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Esta página muestra una selección de datos de las fuentes. Consulte los avisos enlazados para ver la descripción completa y las versiones afectadas.
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).
CVSS 7.5 · Alta · EPSS 53,3% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: system · network
Productos y versiones afectados
openssl
- Versiones
- Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f): Afectada
Sin corrección publicada
openssl Debian:12
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.1.1g-1
Actualiza a 1.1.1g-1
openssl Debian:13
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.1.1g-1
Actualiza a 1.1.1g-1
openssl Debian:14
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.1.1g-1
Actualiza a 1.1.1g-1
openssl Ubuntu:20.04:LTS
- Versiones
- 1.1.1c-1ubuntu4
- 1.1.1d-2ubuntu3
- 1.1.1d-2ubuntu6
- 1.1.1f-1ubuntu1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1.1.1f-1ubuntu2
Actualiza a 1.1.1f-1ubuntu2
Fuentes originales
- 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.org%3E
- 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://security.gentoo.org/glsa/202004-10
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/
- http://seclists.org/fulldisclosure/2020/May/5
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/
- 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://nvd.nist.gov/vuln/detail/CVE-2020-1967