High severity · published Jul 6, 2019
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)…
7.5
CVSS
1.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IC
IP Conference Phone 7832 Firmware · Cisco
All versions, or not specified · source: NVD
IC
IP Conference Phone 8832 Firmware · Cisco
11.5(1); 12.5(1) · source: NVD
IP
IP Phone 7811 Firmware · Cisco
All versions, or not specified · source: NVD
IP
IP Phone 7821 Firmware · Cisco
All versions, or not specified · source: NVD
IP
IP Phone 7841 Firmware · Cisco
All versions, or not specified · source: NVD
IP
IP Phone 7861 Firmware · Cisco
All versions, or not specified · source: NVD
IP
IP Phone 8811 Firmware · Cisco
11.5(1); 12.5(1) · source: NVD
IP
IP Phone 8841 Firmware · Cisco
11.5(1); 12.5(1) · source: NVD
IP
IP Phone 8845 Firmware · Cisco
11.5(1); 12.5(1) · source: NVD
IP
IP Phone 8851 Firmware · Cisco
11.5(1); 12.5(1) · source: NVD
IP
IP Phone 8861 Firmware · Cisco
11.5(1); 12.5(1) · source: NVD
IP
IP Phone 8865 Firmware · Cisco
11.5(1); 12.5(1) · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-1922
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-1922
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-ip-phone-sip-dos
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