Risk | High |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2020-3297 CVE-2020-3363 |
CWE-ID | CWE-287 CWE-20 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #1 is available. |
Vulnerable software Subscribe |
Cisco 250 Series Smart Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 350 Series Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 350X Series Stackable Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 550X Series Stackable Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 200 Series Smart Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 300 Series Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Small Business 500 Series Stackable Managed Switches Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
Updated 06.08.2020
Added vulnerability #2
EUVDB-ID: #VU29466
Risk: High
CVSSv3.1: 7.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2020-3297
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the use of weak entropy generation for session identifier values. A remote attacker can perform a brute-force attack to determine a current session identifier, bypass authentication process and gain unauthorized access to the application.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco 250 Series Smart Switches: before 2.5.5.47
Cisco 350 Series Managed Switches: before 2.5.5.47
Cisco 350X Series Stackable Managed Switches: before 2.5.5.47
Cisco 550X Series Stackable Managed Switches: before 2.5.5.47
Cisco Small Business 200 Series Smart Switches: All versions
Cisco Small Business 300 Series Managed Switches: All versions
Cisco Small Business 500 Series Stackable Managed Switches: 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.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
EUVDB-ID: #VU34093
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-2020-3363
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the IPv6 packet processing engine. A remote attacker can send a specially crafted IPv6 packet and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco 250 Series Smart Switches: before 2.5.5.47
Cisco 350 Series Managed Switches: before 2.5.5.47
Cisco 350X Series Stackable Managed Switches: before 2.5.5.47
Cisco 550X Series Stackable Managed Switches: before 2.5.5.47
Cisco Small Business 200 Series Smart Switches: All versions
Cisco Small Business 300 Series Managed Switches: All versions
Cisco Small Business 500 Series Stackable Managed Switches: All versions
External linkshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbss-ipv6-dos-3bLk6vA
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.