Improper Certificate Validation Affecting npm10 package, versions <10.24.1-1.36.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.23% (62nd percentile)

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  • Snyk IDSNYK-SLES150-NPM10-2671619
  • published14 Apr 2022
  • disclosed15 Jul 2021

Introduced: 15 Jul 2021

CVE-2021-3450  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 npm10 to version 10.24.1-1.36.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream npm10 package and not the npm10 package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

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).

References

CVSS Scores

version 3.1