Memory buffer overflow in Cisco Secure Firewall Threat Defense
CVSS score
8.6
EPSS probability
%1.4
Risk score
0.1
Published
5 y ago
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Impact on My Inventory
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Vulnerability description
DayBreach CVE AI Research
CVE-2021-1402 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2021-1402 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | cisco | secure firewall threat defense | View |
| 2 | cisco | secure firewall threat defense | View |
| 3 | cisco | firepower threat defense virtual | View |
| 4 | cisco | asa-5512-x | View |
| 5 | cisco | asa-5515-x | View |
| 6 | cisco | asa 5525-x | View |
| 7 | cisco | asa-5545-x | View |
| 8 | cisco | asa-5555-x | View |
| 9 | cisco | firepower 1010 | View |
| 10 | cisco | firepower 1120 | View |
| 11 | cisco | firepower 1140 | View |
| 12 | cisco | firepower 1150 | View |
| 13 | cisco | firepower 2110 | View |
| 14 | cisco | firepower 2120 | View |
| 15 | cisco | firepower 2130 | View |
| 16 | cisco | firepower 2140 | View |
| 17 | cisco | isa 3000 | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.6 | CVSS V30 | HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD |
| 8.6 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD |
| 7.8 | CVSS V2 | — | AV:N/AC:L/Au:N/C:N/I:N/A:C | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-1402 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-1402 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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