Absolute Path Traversal in Cisco IP Phone Software
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-34711 |
| CWE-ID | CWE-36 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Cisco IP Conference Phone 7832 Hardware solutions / Office equipment, IP-phones, print servers Cisco IP Conference Phone 8832 Hardware solutions / Office equipment, IP-phones, print servers Cisco IP Phone 8800 Series Hardware solutions / Office equipment, IP-phones, print servers Cisco Wireless IP Phone 8821 Hardware solutions / Office equipment, IP-phones, print servers IP Phone 7800 Series Other software / Other software solutions |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Absolute Path Traversal
EUVDB-ID: #VU57111
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-34711
CWE-ID:
CWE-36 - Absolute Path Traversal
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A local user can provide a specially crafted input to a debug shell command and read arbitrary files on the system.
MitigationInstall update from vendor's website.
Vulnerable software versionsCisco IP Conference Phone 7832: 14.1
Cisco IP Conference Phone 8832: 14.1
IP Phone 7800 Series: 14.1
Cisco IP Phone 8800 Series: 14.1
Cisco Wireless IP Phone 8821: 11.0
CPE2.3- cpe:2.3:h:cisco_systems:cisco_ip_conference_phone_7832:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_ip_conference_phone_7832:14.1:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_ip_conference_phone_8832:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_ip_conference_phone_8832:14.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco_systems:ip_phone_7800_series:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco_systems:ip_phone_7800_series:14.1:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_ip_phone_8800_series:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_ip_phone_8800_series:14.1:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_wireless_ip_phone_8821:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_wireless_ip_phone_8821:11.0:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
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.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
