CVE Vulnerabilities

CVE-2020-1971

This vulnerability is marked as RESERVED by NVD. This means that the CVE-ID is reserved for future use by the CVE Numbering Authority (CNA) or a security researcher, but the details of it are not yet publicly available yet.

This page will reflect the classification results once they are available through NVD.

Any vendor information available is shown as below.

Redhat

CVE-2020-1971 openssl: EDIPARTYNAME NULL pointer de-reference

Mitigation

Applications not using the GENERAL_NAME_cmp of openssl are not vulnerable to this flaw. Even when this function is used, if the attacker can control both the arguments of this function, only then the attacker could trigger a crash.

Affected Software List

NameVendorVersion
JBoss Core Services on RHEL 7RedHat
Red Hat Enterprise Linux 6 Extended Lifecycle SupportRedHatopenssl-0:1.0.1e-59.el6_10
Red Hat Enterprise Linux 7RedHatopenssl-1:1.0.2k-21.el7_9
Red Hat Enterprise Linux 7.2 Advanced Update SupportRedHatopenssl-1:1.0.1e-52.el7_2
Red Hat Enterprise Linux 7.3 Advanced Update SupportRedHatopenssl-1:1.0.1e-61.el7_3
Red Hat Enterprise Linux 7.4 Advanced Update SupportRedHatopenssl-1:1.0.2k-9.el7_4
Red Hat Enterprise Linux 7.4 Telco Extended Update SupportRedHatopenssl-1:1.0.2k-9.el7_4
Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsRedHatopenssl-1:1.0.2k-9.el7_4
Red Hat Enterprise Linux 7.6 Extended Update SupportRedHatopenssl-1:1.0.2k-17.el7_6
Red Hat Enterprise Linux 7.7 Extended Update SupportRedHatopenssl-1:1.0.2k-20.el7_7
Red Hat Enterprise Linux 8RedHatopenssl-1:1.1.1g-12.el8_3
Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsRedHatopenssl-1:1.1.1-9.el8_0
Red Hat Enterprise Linux 8.1 Extended Update SupportRedHatopenssl-1:1.1.1c-3.el8_1
Red Hat Enterprise Linux 8.2 Extended Update SupportRedHatopenssl-1:1.1.1c-16.el8_2
Red Hat JBoss Core Services 1RedHat
Red Hat JBoss Web Server 3.1RedHat
Red Hat JBoss Web Server 3 for RHEL 7RedHattomcat-native-0:1.2.23-23.redhat_23.ep7.el7
Red Hat JBoss Web Server 5RedHat
Red Hat JBoss Web Server 5.4 on RHEL 7RedHat
Red Hat JBoss Web Server 5.4 on RHEL 8RedHat

Ubuntu

The X.509 GeneralName type is a generic type for representing different types of names. One of those name types is known as EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which compares different instances of a GENERAL_NAME to see if they are equal or not. This function behaves incorrectly when both GENERAL_NAMEs contain an EDIPARTYNAME. A NULL pointer dereference and a crash may occur leading to a possible denial of service attack. OpenSSL itself uses the GENERAL_NAME_cmp function for two purposes: 1) Comparing CRL distribution point names between an available CRL and a CRL distribution point embedded in an X509 certificate 2) When verifying that a timestamp response token signer matches the timestamp authority name (exposed via the API functions TS_RESP_verify_response and TS_RESP_verify_token) If an attacker can control both items being compared then that attacker could trigger a crash. For example if the attacker can trick a client or server into checking a malicious certificate against a malicious CRL then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a certificate. This checking happens prior to the signatures on the certificate and CRL being verified. OpenSSL’s s_server, s_client and verify tools have support for the “-crl_download” option which implements automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL’s parser will accept and hence trigger this attack. All OpenSSL 1.1.1 and 1.0.2 versions are affected by this issue. Other OpenSSL releases are out of support and have not been checked. Fixed in OpenSSL 1.1.1i (Affected 1.1.1-1.1.1h). Fixed in OpenSSL 1.0.2x (Affected 1.0.2-1.0.2w).

Affected Software List

NameVendorVersion
Edk2Ubuntu/trustyout of standard support
NodejsUbuntu/trustyout of standard support
NodejsUbuntu/upstreamTBD
OpensslUbuntu/devel1.1.1f-1ubuntu5
OpensslUbuntu/esm-infra/xenial1.0.2g-1ubuntu4.18
OpensslUbuntu/groovy1.1.1f-1ubuntu4.1
OpensslUbuntu/precise/esm1.0.1-4ubuntu5.45
OpensslUbuntu/trusty/esm1.0.1f-1ubuntu2.27+esm2
OpensslUbuntu/xenial1.0.2g-1ubuntu4.18
OpensslUbuntu/bionic1.1.1-1ubuntu2.1~18.04.7
OpensslUbuntu/focal1.1.1f-1ubuntu2.1
OpensslUbuntu/trustyout of standard support
OpensslUbuntu/upstreamTBD
Openssl1.0Ubuntu/upstreamTBD
Openssl1.0Ubuntu/bionic1.0.2n-1ubuntu5.5