Multiple vulnerabilities in Lenovo Networking Switches
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-27796 CVE-2021-27797 |
| CWE-ID | CWE-200 CWE-798 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Lenovo ThinkSystem DB800D FC Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo ThinkSystem DB720S FC Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo ThinkSystem DB630S FC Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo ThinkSystem DB620S FC Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo ThinkSystem DB610S FC Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo ThinkSystem DB400D FC Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo - B6510 FC SAN Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo - B6505 FC SAN Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Lenovo - B300 FC SAN Switch Hardware solutions / Routers & switches, VoIP, GSM, etc Brocade - 6505 FC SAN Switch Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Lenovo |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Information disclosure
EUVDB-ID: #VU61561
Risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-27796
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote user can read the contents of any file on the filesystem utilizing one of a few available binaries.
MitigationInstall update from vendor's website.
Vulnerable software versionsLenovo ThinkSystem DB800D FC Switch: All versions
Lenovo ThinkSystem DB720S FC Switch: All versions
Lenovo ThinkSystem DB630S FC Switch: All versions
Lenovo ThinkSystem DB620S FC Switch: All versions
Lenovo ThinkSystem DB610S FC Switch: All versions
Lenovo ThinkSystem DB400D FC Switch: All versions
Lenovo - B6510 FC SAN Switch: All versions
Lenovo - B6505 FC SAN Switch: All versions
Lenovo - B300 FC SAN Switch: All versions
Brocade - 6505 FC SAN Switch: All versions
CPE2.3- cpe:2.3:h:lenovo:lenovo_thinksystem_db800d_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db720s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db630s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db620s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db610s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db400d_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_-_b6510_fc_san_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_-_b6505_fc_san_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_-_b300_fc_san_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:brocade_-_6505_fc_san_switch:*:*:*:*:*:*:*:*
https://support.lenovo.com/lu/uk/product_security/LEN-79718
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user 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) Use of hard-coded credentials
EUVDB-ID: #VU61562
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-2021-27797
CWE-ID:
CWE-798 - Use of Hard-coded Credentials
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain full access to vulnerable system.
The vulnerability exists due to presence of hard-coded credentials in application code. A remote unauthenticated attacker can access the affected system using the hard-coded credentials.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsLenovo ThinkSystem DB800D FC Switch: All versions
Lenovo ThinkSystem DB720S FC Switch: All versions
Lenovo ThinkSystem DB630S FC Switch: All versions
Lenovo ThinkSystem DB620S FC Switch: All versions
Lenovo ThinkSystem DB610S FC Switch: All versions
Lenovo ThinkSystem DB400D FC Switch: All versions
Lenovo - B6510 FC SAN Switch: All versions
Lenovo - B6505 FC SAN Switch: All versions
Lenovo - B300 FC SAN Switch: All versions
Brocade - 6505 FC SAN Switch: All versions
CPE2.3- cpe:2.3:h:lenovo:lenovo_thinksystem_db800d_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db720s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db630s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db620s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db610s_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_thinksystem_db400d_fc_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_-_b6510_fc_san_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_-_b6505_fc_san_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:lenovo_-_b300_fc_san_switch:*:*:*:*:*:*:*:*
- cpe:2.3:h:lenovo:brocade_-_6505_fc_san_switch:*:*:*:*:*:*:*:*
https://support.lenovo.com/lu/uk/product_security/LEN-79718
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.
