CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
65.8%
A vulnerability in the H.323 subsystem of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition on an affected device.
The vulnerability is due to a failure to properly validate certain fields in an H.323 protocol suite message. When processing the malicious message, the affected device may attempt to access an invalid memory region, resulting in a crash. An attacker who can submit an H.323 packet designed to trigger the vulnerability could cause the affected device to crash and restart.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
This advisory is part of the September 28, 2016, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 10 Cisco Security Advisories that describe 11 vulnerabilities. All the vulnerabilities have a Security Impact Rating of “High.” For a complete list of the advisories and links to them, see Cisco Event Response: September 2016 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication[“https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-56513”].
Vendor | Product | Version | CPE |
---|---|---|---|
cisco | ios | 12.2b | cpe:2.3:o:cisco:ios:12.2b:*:*:*:*:*:*:* |
cisco | ios | 12.2yh | cpe:2.3:o:cisco:ios:12.2yh:*:*:*:*:*:*:* |
cisco | ios | 12.2mc | cpe:2.3:o:cisco:ios:12.2mc:*:*:*:*:*:*:* |
cisco | ios | 12.2yj | cpe:2.3:o:cisco:ios:12.2yj:*:*:*:*:*:*:* |
cisco | ios | 12.2yt | cpe:2.3:o:cisco:ios:12.2yt:*:*:*:*:*:*:* |
cisco | ios | 12.2yn | cpe:2.3:o:cisco:ios:12.2yn:*:*:*:*:*:*:* |
cisco | ios | 12.2yl | cpe:2.3:o:cisco:ios:12.2yl:*:*:*:*:*:*:* |
cisco | ios | 12.2ym | cpe:2.3:o:cisco:ios:12.2ym:*:*:*:*:*:*:* |
cisco | ios | 12.2yu | cpe:2.3:o:cisco:ios:12.2yu:*:*:*:*:*:*:* |
cisco | ios | 12.2yv | cpe:2.3:o:cisco:ios:12.2yv:*:*:*:*:*:*:* |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
65.8%