Vulnerability Name:

CVE-2018-0325

Assigned:2017-11-27
Published:2018-05-16
Updated:2018-06-27
Summary:A vulnerability in the Session Initiation Protocol (SIP) call-handling functionality of Cisco IP Phone 7800 Series phones and Cisco IP Phone 8800 Series phones could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to incomplete input validation of SIP Session Description Protocol (SDP) parameters by the SDP parser of an affected phone. An attacker could exploit this vulnerability by sending a malformed SIP packet to an affected phone. A successful exploit could allow the attacker to cause all active phone calls on the affected phone to be dropped while the SIP process on the phone unexpectedly restarts, resulting in a DoS condition. Cisco Bug IDs: CSCvf40066.
CVSS v3 Severity:7.5 High (CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.8 Medium (CCN CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L)
5.1 Medium (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-20
References:Source: BID
Type: VENDOR_ADVISORY
104202

Source: SECTRACK
Type: VENDOR_ADVISORY
1040927

Source: XF
Type: UNKNOWN
cisco-ipphone-cve20180325-dos(143403)

Source: CONFIRM
Type: VENDOR_ADVISORY
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-ip-phone-dos

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ip_phone_8800_firmware:9.4(2)sr4:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ip_phone_8800_firmware:10.3(1)sr4:*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:ip_phone_8800:-:*:*:*:*:*:*:*

  • Configuration 2:
  • cpe:/h:cisco:ip_phone_7800:-:*:*:*:*:*:*:*

  • Configuration 3:
  • cpe:/h:cisco:ip_phone_7800:-:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/h:cisco:ip_phones_8800_series:*:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:ip_phones_7800_series:*:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    cisco ip phone 8800 firmware 9.4(2)sr4
    cisco ip phone 8800 firmware 10.3(1)sr4
    cisco ip phone 8800 -
    cisco ip phone 7800 -
    cisco ip phone 7800 -
    cisco ip phones 8800 series *
    cisco ip phones 7800 series *