Multiple vulnerabilities in Cisco Small Business Series Switches

1) Heap-based buffer overflow

EUVDB-ID: #VU76262

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-20024

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing requests sent to the web interface. A remote non-authenticated attacker can send a specially crafted request to the web interface, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27386
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32312

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.

2) Heap-based buffer overflow

EUVDB-ID: #VU76263

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-20156

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing requests sent to the web interface. A remote non-authenticated attacker can send a specially crafted request to the web interface, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27393
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32313

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.

3) Heap-based buffer overflow

EUVDB-ID: #VU76264

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-20157

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing requests sent to the web interface. A remote non-authenticated attacker can send a specially crafted request to the web interface, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27394
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32315

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.

4) Input validation error

EUVDB-ID: #VU76265

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-20158

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted input to the web interface and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27403
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32318

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.

5) Stack-based buffer overflow

EUVDB-ID: #VU76266

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-20159

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling requests. A remote unauthenticated attacker can send specially crafted input to the web interface, trigger a stack-based buffer overflow and execute arbitrary code with root privileges on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27425
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32323

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.

6) Buffer overflow

EUVDB-ID: #VU76267

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-20160

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling requests. A remote unauthenticated attacker can send specially crafted input to the web interface, trigger a based buffer overflow and execute arbitrary code with root privileges on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27441
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32326

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.

7) Stack-based buffer overflow

EUVDB-ID: #VU76268

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-20161

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling requests. A remote unauthenticated attacker can send specially crafted input to the web interface, trigger a stack-based buffer overflow and execute arbitrary code with root privileges on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27444
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32334

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.

8) Information disclosure

EUVDB-ID: #VU76269

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-20162

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in the web interface. A remote attacker can read system configuration.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32338
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27445

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.

9) Stack-based buffer overflow

EUVDB-ID: #VU76270

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-20189

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling requests. A remote unauthenticated attacker can send specially crafted input to the web interface, trigger a stack-based buffer overflow and execute arbitrary code with root privileges on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

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

Cisco 250 Series Smart Switches: before 2.5.9.16

Cisco 350 Series Managed Switches: before 2.5.9.16

Cisco 350X Series Stackable Managed Switches: before 2.5.9.16

Cisco 550X Series Stackable Managed Switches: before 2.5.9.16

CPE2.3

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sg-web-multi-S9g4Nkgv
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe27424
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwe32321

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.

Risk	High
Patch available	YES
Number of vulnerabilities	9
CVE-ID	CVE-2023-20024 CVE-2023-20156 CVE-2023-20157 CVE-2023-20158 CVE-2023-20159 CVE-2023-20160 CVE-2023-20161 CVE-2023-20162 CVE-2023-20189
CWE-ID	CWE-122 CWE-20 CWE-121 CWE-119 CWE-200
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	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 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
Vendor	Cisco Systems, Inc