CVE-2020-1967
CVE-2020-1967 · Segmentation fault in SSL_check_chain
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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 · Hoch · EPSS 53,3% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: system · network
Betroffene Produkte und Versionen
openssl
- Softwareversionen
- Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f): Betroffen
Keine Korrektur veröffentlicht
openssl Debian:12
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.1.1g-1
Auf 1.1.1g-1 aktualisieren
openssl Debian:13
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.1.1g-1
Auf 1.1.1g-1 aktualisieren
openssl Debian:14
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.1.1g-1
Auf 1.1.1g-1 aktualisieren
openssl Ubuntu:20.04:LTS
- Softwareversionen
- 1.1.1c-1ubuntu4
- 1.1.1d-2ubuntu3
- 1.1.1d-2ubuntu6
- 1.1.1f-1ubuntu1
- Betroffene Versionsbereiche
- ECOSYSTEM: < 1.1.1f-1ubuntu2
Auf 1.1.1f-1ubuntu2 aktualisieren
Originalquellen
- 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