CVE-2020-1967

01/תיאור (מקור, אנגלית)

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).

02/מוצרים מושפעים

openssl: openssl; debian: debian linux; freebsd: freebsd; fedoraproject: fedora; oracle: application server; oracle: enterprise manager base platform; oracle: enterprise manager for storage management; oracle: enterprise manager ops center; oracle: http server; oracle: jd edwards world security; oracle: mysql; oracle: mysql connectors; oracle: mysql enterprise monitor; oracle: mysql workbench; oracle: peoplesoft enterprise peopletools

03/קישורים10

• www.openssl.org/news/secadv/20200421.txt Vendor Advisory
• www.openssl.org/news/secadv/20200421.txt Vendor Advisory
• security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc PatchThird Party Advisory
• www.oracle.com//security-alerts/cpujul2021.html PatchThird Party Advisory
• www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
• www.oracle.com/security-alerts/cpujan2021.html PatchThird Party Advisory
• www.oracle.com/security-alerts/cpuoct2020.html PatchThird Party Advisory
• www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory
• security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc PatchThird Party Advisory
• www.oracle.com//security-alerts/cpujul2021.html PatchThird Party Advisory