CVE-2018-0296: Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability

CVE-2018-0296 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2021-11-03

A vulnerability in the web interface of Cisco ASA and FTD software due to improper input validation of HTTP URLs allows unauthenticated remote attackers to cause a denial-of-service (DoS) by triggering an unexpected reload. On certain software releases, the vulnerability may instead allow unauthorized information disclosure via directory traversal techniques.

Technologies: Cisco Adaptive Security Appliance (ASA). Vendors: Cisco.

Quick answers

Is CVE-2018-0296 exploited in the wild?
Yes. CVE-2018-0296 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2018-0296?
Critical severity, with a CVSS score of 7.5, published 3 November 2021.
Which products and versions are affected?
Cisco Adaptive Security Appliance (ASA) Software 9.1 before 9.1.7.29, 9.2 before 9.2.4.33, 9.3 before 9.4.4.18, 9.5 before 9.6.4.8, 9.7 before 9.7.1.24, 9.8 before 9.8.2.28, 9.9 before 9.9.2.1; Cisco Firepower Threat Defense (FTD) Software.
Is there a fix for CVE-2018-0296?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2018-0296 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2018-0296?
Check whether you run Cisco Adaptive Security Appliance (ASA). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Cisco Adaptive Security Appliance (ASA) Software 9.1 before 9.1.7.29, 9.2 before 9.2.4.33, 9.3 before 9.4.4.18, 9.5 before 9.6.4.8, 9.7 before 9.7.1.24, 9.8 before 9.8.2.28, 9.9 before 9.9.2.1
  • Cisco Firepower Threat Defense (FTD) Software

Timeline

  • 2018-06-06: disclosed: Vendor advisory published by Cisco
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: exploited: Confirmed as exploited in the wild per CISA KEV and advisory metadata

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