CVE-2020-3259KEV · OVERDUECWE-200information-disclosure

Cisco ASA and FTD Information Disclosure Vulnerability

High · published May 6, 2020

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.5. It is confirmed in active exploitation. It sits in the 99.4th percentile for exploit probability.

960
days past CISA
deadline
CVSS v3.1
7.5
EPSS
72%
Percentile
99.4
In the wild
Confirmed
What it is

🚨 An unauthenticated attacker could snag sensitive info from your Cisco devices with just a crafty GET request! ⚡ Think of the web services interface as a hotel front desk, where anyone can ask for room keys without showing ID. If the receptionist is too trusting and hands out keys based on bad requests, anyone can access confidential information from behind closed doors! This vulnerability would allow an attacker to peer into the memory of an affected device, potentially exposing sensitive and confidential information. Imagine the fallout if your personal data, credentials, or organizational secrets were leaked into the wild — absolutely devastating!

Put simply

Think of the web services interface as a hotel front desk, where anyone can ask for room keys without showing ID. If the receptionist is too trusting and hands out keys based on bad requests, anyone can access confidential information from behind closed doors! The vulnerability arises from a buffer tracking issue when the Cisco ASA and FTD Software parse invalid URLs. By sending a specially crafted GET request, an attacker could exploit this flaw to retrieve the device's memory contents.

What to do

This vulnerability would allow an attacker to peer into the memory of an affected device, potentially exposing sensitive and confidential information. Imagine the fallout if your personal data, credentials, or organizational secrets were leaked into the wild — absolutely devastating! To protect your systems, urgently patch to the latest version that addresses CVE-2020-3259. Review and tighten your AnyConnect and WebVPN configurations to ensure they're secure. Don't delay; the longer you wait, the more exposed your systems become! You've got this! By taking quick action, you'll lock down your defenses and keep your data safe. 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.71500 · 99.4th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2020-05-06T21:15Z
KEV added
2024-02-15 · due 2024-03-07
Affected products (9)
ProductVersionsFixed in
cisco/secure_firewall_threat_defense≥ 6.2.3, < 6.2.3.166.2.3.16
cisco/secure_firewall_threat_defense≥ 6.3.0, < 6.3.0.66.3.0.6
cisco/secure_firewall_threat_defense≥ 6.4.0, < 6.4.0.96.4.0.9
cisco/secure_firewall_threat_defense≥ 6.5.0, < 6.5.0.56.5.0.5
cisco/adaptive_security_appliance_software≥ 9.8, < 9.8.4.209.8.4.20
cisco/adaptive_security_appliance_software≥ 9.9, < 9.9.2.679.9.2.67
cisco/adaptive_security_appliance_software≥ 9.10, < 9.10.1.409.10.1.40
cisco/adaptive_security_appliance_software≥ 9.12, < 9.12.3.99.12.3.9
cisco/adaptive_security_appliance_software≥ 9.13, < 9.13.1.109.13.1.10
References (3)
EPSS history
Timeline
  • 15 FEB 00:00Z
    Added to CISA KEV — remediate by Mar 7
    kev
  • 06 MAY 16:41Z
    Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Information Disclosure Vulnerability
    cvelistv5