Vulnerability Details : CVE-2019-1922
A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. An attacker could exploit this vulnerability by altering the SIP replies that are sent to the affected phone during the registration process. A successful exploit could allow the attacker to cause the phone to reboot and not complete the registration process.
Vulnerability category: Denial of service
Products affected by CVE-2019-1922
- cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:12.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7811_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7821_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7841_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7861_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8811_firmware:12.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8811_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8841_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8841_firmware:12.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8845_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8845_firmware:12.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8851_firmware:12.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8851_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8861_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8861_firmware:12.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8865_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8865_firmware:12.5\(1\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1922
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1922
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.6
|
3.6
|
Cisco Systems, Inc. |
CWE ids for CVE-2019-1922
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2019-1922
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-ip-phone-sip-dos
Cisco IP Phone 7800 and 8800 Series Session Initiation Protocol Denial of Service VulnerabilityVendor Advisory
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