CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
61.4%
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a “purpose” has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named “purpose” values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
Vendor | Product | Version | CPE |
---|---|---|---|
openssl | openssl | * | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
freebsd | freebsd | 12.2 | cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* |
freebsd | freebsd | 12.2 | cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:* |
freebsd | freebsd | 12.2 | cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:* |
netapp | santricity_smi-s_provider_firmware | - | cpe:2.3:o:netapp:santricity_smi-s_provider_firmware:-:*:*:*:*:*:*:* |
netapp | santricity_smi-s_provider | - | cpe:2.3:h:netapp:santricity_smi-s_provider:-:*:*:*:*:*:*:* |
netapp | storagegrid_firmware | - | cpe:2.3:o:netapp:storagegrid_firmware:-:*:*:*:*:*:*:* |
netapp | storagegrid | - | cpe:2.3:h:netapp:storagegrid:-:*:*:*:*:*:*:* |
windriver | linux | - | cpe:2.3:o:windriver:linux:-:*:*:*:cd:*:*:* |
windriver | linux | 17.0 | cpe:2.3:o:windriver:linux:17.0:*:*:*:lts:*:*:* |
www.openwall.com/lists/oss-security/2021/03/27/1
www.openwall.com/lists/oss-security/2021/03/27/2
www.openwall.com/lists/oss-security/2021/03/28/3
www.openwall.com/lists/oss-security/2021/03/28/4
cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b
kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845
kc.mcafee.com/corporate/index?page=content&id=SB10356
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/
mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html
psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013
security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc
security.gentoo.org/glsa/202103-03
security.netapp.com/advisory/ntap-20210326-0006/
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd
www.openssl.org/news/secadv/20210325.txt
www.oracle.com//security-alerts/cpujul2021.html
www.oracle.com/security-alerts/cpuApr2021.html
www.oracle.com/security-alerts/cpuapr2022.html
www.oracle.com/security-alerts/cpujul2022.html
www.oracle.com/security-alerts/cpuoct2021.html
www.tenable.com/security/tns-2021-05
www.tenable.com/security/tns-2021-08
www.tenable.com/security/tns-2021-09
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
61.4%