Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-1402 |
CWE-ID | CWE-119 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco Firepower Threat Defense (FTD) Hardware solutions / Security hardware applicances 3000 Series Industrial Security Appliance (ISA) Server applications / IDS/IPS systems, Firewalls and proxy servers Cisco Firepower Threat Defense Virtual (FTDv) Server applications / IDS/IPS systems, Firewalls and proxy servers ASA 5512-X Adaptive Security Appliance Server applications / Other server solutions ASA 5515-X Adaptive Security Appliance Server applications / Other server solutions ASA 5525-X Adaptive Security Appliance Server applications / Other server solutions ASA 5545-X Adaptive Security Appliance Server applications / Other server solutions ASA 5555-X Adaptive Security Appliance Server applications / Other server solutions Firepower 1000 Series Appliances Hardware solutions / Other hardware appliances |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU52742
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1402
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the software-based SSL/TLS message handler. A remote attacker can send a specially crafted SSL/TLS message, trigger memory corruption and cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco Firepower Threat Defense (FTD): 6.2.2 - 6.3.0
3000 Series Industrial Security Appliance (ISA): All versions
ASA 5512-X Adaptive Security Appliance: All versions
ASA 5515-X Adaptive Security Appliance: All versions
ASA 5525-X Adaptive Security Appliance: All versions
ASA 5545-X Adaptive Security Appliance: All versions
ASA 5555-X Adaptive Security Appliance: All versions
Firepower 1000 Series Appliances: All versions
Cisco Firepower Threat Defense Virtual (FTDv): All versions
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.