High severity · published Mar 28, 2019
CVE-2019-1752
A vulnerability in the ISDN functions of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload
7.5
CVSS
2.5%
EPSS
No
On KEV
Description
A vulnerability in the ISDN functions of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of specific values in the Q.931 information elements. An attacker could exploit this vulnerability by calling the affected device with specific Q.931 information elements being present. An exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.
CVSS vector
CVSS:3.1/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)2.5% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IX
IOS XE · Cisco
3.8.0s; 3.8.1s; 3.8.2s; 3.9.0as; 3.9.0s; 3.9.1as; +34 more · source: NVD
IO
Ios · Cisco
15.0(1)m; 15.0(1)m1; 15.0(1)m2; 15.0(1)m3; 15.0(1)m4; 15.0(1)m5; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-1752
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-1752
Third Party Advisory
http://www.securityfocus.com/bid/107589
Patch
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-isdn
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