CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.6 | $0-$5k | 0.00 |
A vulnerability was found in FreeBSD up to 10.1 (Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown function of the component routed Daemon. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. As an impact it is known to affect availability. The summary by CVE is:
routed in FreeBSD 8.4 through 10.1-RC2 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via an RIP request from a source not on a directly connected network.
The weakness was disclosed 10/21/2014 by Hiroki Sato as FreeBSD-SA-14:21.routed as confirmed advisory (Website). It is possible to read the advisory at security.FreeBSD.org. This vulnerability is known as CVE-2014-3955 since 06/03/2014. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The advisory points out:
The input path in routed(8) will accept queries from any source and attempt to answer them. However, the output path assumes that the destination address for the response is on a directly connected network.
The vulnerability scanner Nessus provides a plugin with the ID 92909 (FreeBSD : FreeBSD -- routed(8) remote denial of service vulnerability (734233f4-6007-11e6-a6c3-14dae9d210b8)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks. The advisory illustrates:
Upon receipt of a query from a source which is not on a directly connected network, routed(8) will trigger an assertion and terminate. The affected system's routing table will no longer be updated. If the affected system is a router, its routes will eventually expire from other routers' routing tables, and its networks will no longer be reachable unless they are also connected to another router.
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:
Use a packet filter such as pf(4) or ipfw(4) to block incoming UDP packets with destination port 520 that did not originate on the same subnet as the destination address.
The vulnerability is also documented in the databases at X-Force (97721) and Tenable (92909). The entries 68048 and 68046 are pretty similar.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 4.6
VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Input validationCWE: CWE-20
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
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Nessus ID: 92909
Nessus Name: FreeBSD : FreeBSD -- routed(8) remote denial of service vulnerability (734233f4-6007-11e6-a6c3-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
06/03/2014 🔍10/21/2014 🔍
10/21/2014 🔍
10/21/2014 🔍
10/21/2014 🔍
10/22/2014 🔍
10/22/2014 🔍
10/23/2014 🔍
10/23/2014 🔍
10/27/2014 🔍
02/23/2022 🔍
Sources
Product: freebsd.orgAdvisory: FreeBSD-SA-14:21.routed
Researcher: Hiroki Sato
Status: Confirmed
CVE: CVE-2014-3955 (🔍)
X-Force: 97721 - FreeBSD target routed(8) denial of service, Medium Risk
SecurityTracker: 1031099 - FreeBSD routed(8) Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 46736 - FreeBSD through 10.1 Remote DoS via a RIP Query - CVE-2014-3955, Medium
SecurityFocus: 70693 - FreeBSD CVE-2014-3955 Remote Denial of Service Vulnerability
Secunia: 61865 - FreeBSD routed Denial of Service Vulnerability, Less Critical
See also: 🔍
Entry
Created: 10/22/2014 16:53Updated: 02/23/2022 15:20
Changes: 10/22/2014 16:53 (70), 06/09/2017 07:35 (12), 02/23/2022 15:20 (3)
Complete: 🔍
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