GitHub Advisory DatabaseGHSA-JQ65-29V4-4X35Null pointer deference in openssl-src
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
94.3%
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).
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| * | openssl-src | * | cpe:2.3:a:*:openssl-src:*:*:*:*:*:*:*:* |
References
lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html
packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html
seclists.org/fulldisclosure/2020/May/5
www.openwall.com/lists/oss-security/2020/04/22/2
git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=eb563247aef3e83dda7679c43f9649270462e5b1
github.com/advisories/GHSA-jq65-29v4-4x35
github.com/irsl/CVE-2020-1967
kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440
lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064@%3Cdev.tomcat.apache.org%3E
lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee@%3Cdev.tomcat.apache.org%3E
lists.fedoraproject.org/archives/list/[email protected]/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/
lists.fedoraproject.org/archives/list/[email protected]/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/
lists.fedoraproject.org/archives/list/[email protected]/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/
nvd.nist.gov/vuln/detail/CVE-2020-1967
rustsec.org/advisories/RUSTSEC-2020-0015.html
security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc
security.gentoo.org/glsa/202004-10
security.netapp.com/advisory/ntap-20200424-0003/
security.netapp.com/advisory/ntap-20200717-0004/
www.debian.org/security/2020/dsa-4661
www.openssl.org/news/secadv/20200421.txt
www.oracle.com//security-alerts/cpujul2021.html
www.oracle.com/security-alerts/cpuApr2021.html
www.oracle.com/security-alerts/cpujan2021.html
www.oracle.com/security-alerts/cpujul2020.html
www.oracle.com/security-alerts/cpuoct2020.html
www.oracle.com/security-alerts/cpuoct2021.html
www.synology.com/security/advisory/Synology_SA_20_05
www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL
www.tenable.com/security/tns-2020-03
www.tenable.com/security/tns-2020-04
www.tenable.com/security/tns-2020-11
www.tenable.com/security/tns-2021-10
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
94.3%