CVE-2024-20353
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD): ASA and FTD Denial of Service
As of , CVE-2024-20353 in Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 24 April 2024
- US federal deadline
- 1 May 20247 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.71Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- No score that dayThe EPSS file of the day CISA listed it has no score for it.
- Public exploit
- None foundNeither Metasploit nor Exploit-DB lists one.
- Fix
- Vendor advice: sec.cloudapps.cisco.comLinks below, from CISA's entry.
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA's required action
What the flaw is
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an infinite loop vulnerability that can lead to remote denial of service condition.
CISA's description
A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted web server on a device. A successful exploit could allow the attacker to cause a DoS condition when the device reloads.
The CVE record's description, from cisco
- CVE published
- 24 April 2024
- Assigned by
- cisco
- CVSS
- 8.6 High (CVSS 3.1, from the CNA)
- CWE-835
- Loop with Unreachable Exit Condition ('Infinite Loop')
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- yes
- CISA SSVC, technical impact
- partial
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD): other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2020-3259ASA and FTD Information Disclosure | Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) | Patch this weekRansomware use; EPSS 0.72 | 0.72 | ||
| CVE-2020-3452ASA and FTD Read-Only Path Traversal | Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) | Patch this weekEPSS 0.99 | 0.99 | ||
| CVE-2020-3580ASA and FTD Cross-Site Scripting (XSS) | Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) | Patch this weekRansomware use; EPSS 0.86 | 0.86 | ||
| CVE-2024-20359ASA and FTD Privilege Escalation | Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) | Patch soon | 0.19 | ||
| CVE-2024-20481ASA and FTD Denial-of-Service | Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) | Patch soon | 0.16 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org