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Vulnerability of Cisco IP Phone: multiple vulnerabilities via CDP/LLDP

Synthesis of the vulnerability 

An attacker can use several vulnerabilities of Cisco IP Phone.
Vulnerable products: Cisco IP Phone.
Severity of this weakness: 2/4.
Creation date: 03/03/2021.
Références of this bulletin: cisco-sa-ipphone-rce-dos-U2PsSkz3, CSCvu59329, CSCvu59330, CSCvu59335, CSCvu59346, CSCvu59349, CSCvu59351, CSCvu59353, CVE-2021-1379, VIGILANCE-VUL-34740.

Description of the vulnerability 

An attacker can use several vulnerabilities of Cisco IP Phone.
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This threat bulletin impacts software or systems such as Cisco IP Phone.

Our Vigil@nce team determined that the severity of this computer threat bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of user account.

An attacker with a expert ability can exploit this computer threat.

Solutions for this threat 

Cisco IP Phone: solution CSCvu59329 CSCvu59330 CSCvu59335 CSCvu59346 CSCvu59349 CSCvu59351 CSCvu59353.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu59329
  https://tools.cisco.com/bugsearch/bug/CSCvu59329
  https://tools.cisco.com/quickview/bug/CSCvu59329
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu59330
  https://tools.cisco.com/bugsearch/bug/CSCvu59330
  https://tools.cisco.com/quickview/bug/CSCvu59330
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu59335
  https://tools.cisco.com/bugsearch/bug/CSCvu59335
  https://tools.cisco.com/quickview/bug/CSCvu59335
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu59346
  https://tools.cisco.com/bugsearch/bug/CSCvu59346
  https://tools.cisco.com/quickview/bug/CSCvu59346
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu59349
  https://tools.cisco.com/bugsearch/bug/CSCvu59349
  https://tools.cisco.com/quickview/bug/CSCvu59349
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu59351
  https://tools.cisco.com/bugsearch/bug/CSCvu59351
  https://tools.cisco.com/quickview/bug/CSCvu59351
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu59353
  https://tools.cisco.com/bugsearch/bug/CSCvu59353
  https://tools.cisco.com/quickview/bug/CSCvu59353
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