FreeBSD up to 10.1 routed Daemon input validation

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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeBSD up to 10.1. It has been rated as problematic. Affected by this issue is some unknown functionality of the component routed Daemon. This manipulation causes input validation. This vulnerability is tracked as CVE-2014-3955. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

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), Tenable (92909), SecurityFocus (BID 70693†), Secunia (SA61865†) and SecurityTracker (ID 1031099†). The entries VDB-68048 and VDB-68046 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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 Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/03/2014 🔍
10/21/2014 +140 days 🔍
10/21/2014 +0 days 🔍
10/21/2014 +0 days 🔍
10/21/2014 +0 days 🔍
10/22/2014 +1 days 🔍
10/22/2014 +0 days 🔍
10/23/2014 +1 days 🔍
10/23/2014 +0 days 🔍
10/27/2014 +4 days 🔍
02/23/2022 +2676 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-14:21.routed
Researcher: Hiroki Sato
Status: Confirmed

CVE: CVE-2014-3955 (🔍)
GCVE (CVE): GCVE-0-2014-3955
GCVE (VulDB): GCVE-100-68047
X-Force: 97721 - FreeBSD target routed(8) denial of service, Medium Risk
SecurityFocus: 70693 - FreeBSD CVE-2014-3955 Remote Denial of Service Vulnerability
Secunia: 61865 - FreeBSD routed Denial of Service Vulnerability, Less Critical
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

See also: 🔍

Entryinfo

Created: 10/22/2014 16:53
Updated: 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: 🔍
Cache ID: 216:E3F:103

Be aware that VulDB is the high quality source for vulnerability data.

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