QID 316995

Date Published: 2021-07-14

QID 316995: Cisco Nexus Operating System (NX-OS) Vulnerability in Open Secure Sockets Layer (OpenSSL) Affecting Cisco Products (cisco-sa-openssl-2021-GHY28dJd)

Cisco NX-OS is affected by CVE-2021-3449, that could allow a remote unauthenticated attacker to crash
a TLS server resulting in a Denial of Service (DoS) condition.
Affected Products
Cisco NX-OS version 10.1.1 only
Note: The vulnerability is exposed in 10.1.1 release only (which has the cisco ssl 1.1.1 version),7x and 9x are not impacted by this CVE.
Potential detection as cannot confirm whether Cisco SSL version is updated to 1.1.1k.7.2.225.

QID Detection Logic(Authenticated):
It checks for vulnerable version of Cisco NX-OS using show version Command.

Successful exploitation could allow a remote unauthenticated attacker to crash a TLS server resulting in a Denial of Service (DoS) condition.

  • CVSS V3 rated as High - 7.4 severity.
  • CVSS V2 rated as Medium - 5.8 severity.
    • Solution

    The fix for this is to uprev to the latest Cisco SSL version 1.1.1k.7.2.225. Customers are advised to refer to cisco-sa-openssl-2021-GHY28dJd for more information.

    Vendor References

    CVEs related to QID 316995

    CVE-2021-3450 | CVE-2021-3449 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-openssl-2021-GHY28dJd URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd
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