QID 316994

Date Published: 2021-07-12

QID 316994: Cisco Internetwork Operating System (IOS-XE) Vulnerability in Open Secure Sockets Layer (OpenSSL) Affecting Cisco Products (cisco-sa-openssl-2021-GHY28dJd)

Cisco IOS XE is impacted by CVE-2021-3449, OpenSSL NULL Pointer Dereference Denial of Service Vulnerability
that could allow an attacker to cause a denial of service (DoS) condition on a targeted system.

Affected Products
Cisco IOS XE below versions if running on below platform :
Cisco Cloud Services Router 1000V Series
Cisco 2600 Series Multiservice Platforms

Affected Releases:
From IOS XE 17.3.1 Prior to IOS XE 17.3(3.9)

Note: Potential detection as cannot confirm the platform.

QID Detection Logic (Authenticated):
The check matches Cisco IOS XE version retrieved via Unix Auth using "show version" command.
QID Detection Logic (Unauthenticated):
The check matches Cisco IOS XE version retrieved via SNMP or TCP/IP Fingerprint or NTP or Telnet.

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

    Customers are advised to refer to cisco-sa-openssl-2021-GHY28dJd for more information.

    Vendor References

    CVEs related to QID 316994

    CVE-2021-3449 | CVE-2021-3450 |
    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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