CVE-2018-0136
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
31/01/2018
Last modified:
04/09/2020
Description
A vulnerability in the IPv6 subsystem of Cisco IOS XR Software Release 5.3.4 for the Cisco Aggregation Services Router (ASR) 9000 Series could allow an unauthenticated, remote attacker to trigger a reload of one or more Trident-based line cards, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect handling of IPv6 packets with a fragment header extension. An attacker could exploit this vulnerability by sending IPv6 packets designed to trigger the issue either to or through the Trident-based line card. A successful exploit could allow the attacker to trigger a reload of Trident-based line cards, resulting in a DoS during the period of time the line card takes to restart. This vulnerability affects Cisco Aggregation Services Router (ASR) 9000 Series when the following conditions are met: The router is running Cisco IOS XR Software Release 5.3.4, and the router has installed Trident-based line cards that have IPv6 configured. A software maintenance upgrade (SMU) has been made available that addresses this vulnerability. The fix has also been incorporated into service pack 7 for Cisco IOS XR Software Release 5.3.4. Cisco Bug IDs: CSCvg46800.
Impact
Base Score 3.x
8.60
Severity 3.x
HIGH
Base Score 2.0
7.80
Severity 2.0
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:cisco:ios_xr:5.3.4:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* | ||
| cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page