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CVE-2021-34711— Cisco IP Phone Software Arbitrary File Read Vulnerability

Quick assessment

Affected
Cisco Cisco IP Phones with Multiplatform Firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IP Phone是美国思科（Cisco）公司的一个硬件设备。提供通话功能的IP电话。 Cisco IP Phone 存在路径遍历漏洞，该漏洞源于输入验证不足。攻击者可以通过向调试 shell 命令提供精心设计的输入来利用此漏洞。成功的利用可能允许攻击者读取设备文件系统上的任何文件。

CVSS 5.5 · Medium EPSS 0.27% · P17
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I. Basic Information for CVE-2021-34711

Vulnerability Information
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Vulnerability Title
Cisco IP Phone Software Arbitrary File Read Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the debug shell of Cisco IP Phone software could allow an authenticated, local attacker to read any file on the device file system. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by providing crafted input to a debug shell command. A successful exploit could allow the attacker to read any file on the device file system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
绝对路径遍历
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IP Phone 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IP Phone是美国思科（Cisco）公司的一个硬件设备。提供通话功能的IP电话。 Cisco IP Phone 存在路径遍历漏洞，该漏洞源于输入验证不足。攻击者可以通过向调试 shell 命令提供精心设计的输入来利用此漏洞。成功的利用可能允许攻击者读取设备文件系统上的任何文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IP Phones with Multiplatform Firmware n/a -

II. Public POCs for CVE-2021-34711

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III. Intelligence Information for CVE-2021-34711

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Vendor Advisories for CVE-2021-34711 (1)

Same Patch Batch · Cisco · 2021-10-06 · 23 CVEs total

CVE-2021-34710 8.8 HIGH Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities
CVE-2021-34735 8.8 HIGH Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities
CVE-2021-34748 8.8 HIGH Cisco Intersight Virtual Appliance Command Injection Vulnerability
CVE-2021-34698 8.6 HIGH Cisco Web Security Appliance Proxy Service Denial of Service Vulnerability
CVE-2021-1594 7.5 HIGH Cisco Identity Services Engine Privilege Escalation Vulnerability
CVE-2021-34788 7.0 HIGH Cisco AnyConnect Secure Mobility Client for Linux and Mac OS with VPN Posture (HostScan) M
CVE-2021-34706 6.4 MEDIUM Cisco Identity Services Engine XML External Entity Injection Vulnerability
CVE-2021-34742 6.1 MEDIUM Cisco Vision Dynamic Signage Director Reflected Cross-Site Scripting Vulnerability
CVE-2021-1534 5.8 MEDIUM Cisco Email Security Appliance URL Filtering Bypass Vulnerability
CVE-2021-34766 5.4 MEDIUM Cisco Smart Software Manager Privilege Escalation Vulnerability
CVE-2021-34757 4.9 MEDIUM Cisco Business 220 Series Smart Switches Static Key and Password Vulnerabilities
CVE-2021-34744 4.9 MEDIUM Cisco Business 220 Series Smart Switches Static Key and Password Vulnerabilities
CVE-2021-34772 4.7 MEDIUM Cisco Orbital Open Redirect Vulnerability
CVE-2021-34758 4.4 MEDIUM Cisco TelePresence Collaboration Endpoint and RoomOS Software Denial of Service Vulnerabi
CVE-2021-34775 4.3 MEDIUM Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti
CVE-2021-34776 4.3 MEDIUM Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti
CVE-2021-34777 4.3 MEDIUM Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti
CVE-2021-34778 4.3 MEDIUM Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti
CVE-2021-34779 4.3 MEDIUM Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti
CVE-2021-34780 4.3 MEDIUM Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco IP Phones with Multiplatform Firmware
Same vendor: Cisco
Same weakness: CWE-36

V. Comments for CVE-2021-34711

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