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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (55.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: -0.000
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
- Cisco iOS Xr — versions Cisco IOS XR
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418… (Vendor Advisory)
- www.securitytracker.com/id/1040710 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/103929 (VDB Entry, Third Party Advisory, vdb-entry)
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.