Vulnerability in Cisco Asr 9001
CVE-2018-0241
A vulnerability in the UDP broadcast forwarding function of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of UDP broadcast packets that are forwarded to an IPv4 helper address. An attacker could exploit this vulnerability by sending multiple UDP broadcast packets to the affected device. An exploit could allow the attacker to cause a buffer leak on the affected device, eventually resulting in a DoS condition requiring manual intervention to recover. This vulnerability affects all Cisco IOS XR platforms running 6.3.1, 6.2.3, or earlier releases of Cisco IOS XR Software when at least one IPv4 helper address is configured on an interface of the device. Cisco Bug IDs: CSCvi35625.
EPSS: 0.009 (54.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Asr_9001
- Cisco Asr_9006
- Cisco Asr_9010
- Cisco Asr_9904
- Cisco Asr_9906
- Cisco Asr_9910
- Cisco Asr_9912
- Cisco Asr_9922
- Cisco Ios_xr — versions 4.0.4.base, 4.1.3.base, 4.2.4.base
- N/a Cisco Ios Xr — versions Cisco IOS XR
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2018-0241?
- CVE-2018-0241 is a high-severity vulnerability in Cisco Asr 9001, classified under CWE-399. CVSS score: 7.4/10. Published 2018-04-19.
- How severe is CVE-2018-0241?
- High severity. CVSS v3 base score is 7.4 out of 10.