CVE-2018-0241
First published: Thu Apr 19 2018(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XR | =4.0.4.base | |
| Cisco IOS XR | =4.1.3.base | |
| Cisco IOS XR | =4.2.4.base | |
| Cisco IOS XR | =4.3.4.base | |
| Cisco IOS XR | =4.4.3.ce | |
| Cisco IOS XR | =5.0.3.ce | |
| Cisco IOS XR | =5.1.4.base | |
| Cisco IOS XR | =5.2.5.ce | |
| Cisco IOS XR | =5.3.4.base | |
| Cisco IOS XR | =5.4.3.ce | |
| Cisco IOS XR | =6.0.4.base | |
| Cisco IOS XR | =6.1.4.base | |
| Cisco IOS XR | =6.2.3.base | |
| Cisco Asr 9001 | ||
| Cisco Asr 9006 | ||
| Cisco Asr 9010 | ||
| Cisco Asr 9904 | ||
| Cisco Asr 9906 | ||
| Cisco Asr 9910 | ||
| Cisco Asr 9912 | ||
| Cisco Asr 9922 |
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Reference Links
Frequently Asked Questions
What is CVE-2018-0241?
CVE-2018-0241 is a vulnerability in the UDP broadcast forwarding function of Cisco IOS XR Software that could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device.
How severe is CVE-2018-0241?
CVE-2018-0241 has a severity score of 7.4 (high).
What is the affected software version for CVE-2018-0241?
The affected software versions for CVE-2018-0241 include Cisco IOS XR 4.0.4.base, 4.1.3.base, 4.2.4.base, 4.3.4.base, 4.4.3.ce, 5.0.3.ce, 5.1.4.base, 5.2.5.ce, 5.3.4.base, 5.4.3.ce, 6.0.4.base, 6.1.4.base, and 6.2.3.base.
How can an attacker exploit CVE-2018-0241?
An attacker can exploit CVE-2018-0241 by sending crafted UDP broadcast packets to the affected device.
Is Cisco ASR 9001, 9006, 9010, 9904, 9906, 9910, 9912, or 9922 affected by CVE-2018-0241?
No, Cisco ASR 9001, 9006, 9010, 9904, 9906, 9910, 9912, and 9922 are not affected by CVE-2018-0241.
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- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- agent/severity
- agent/weakness
- agent/author
- agent/first-publish-date
- agent/softwarecombine
- agent/tags
- agent/event
- agent/description
- vendor/cisco
- canonical/cisco ios xr
- version/cisco ios xr/4.0.4.base
- version/cisco ios xr/4.1.3.base
- version/cisco ios xr/4.2.4.base
- version/cisco ios xr/4.3.4.base
- version/cisco ios xr/4.4.3.ce
- version/cisco ios xr/5.0.3.ce
- version/cisco ios xr/5.1.4.base
- version/cisco ios xr/5.2.5.ce
- version/cisco ios xr/5.3.4.base
- version/cisco ios xr/5.4.3.ce
- version/cisco ios xr/6.0.4.base
- version/cisco ios xr/6.1.4.base
- version/cisco ios xr/6.2.3.base
- canonical/cisco asr 9001
- canonical/cisco asr 9006
- canonical/cisco asr 9010
- canonical/cisco asr 9904
- canonical/cisco asr 9906
- canonical/cisco asr 9910
- canonical/cisco asr 9912
- canonical/cisco asr 9922