FRRouting up to 2.0.1/3.0.1 BGP BGP UPDATE Packet information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in FRRouting up to 2.0.1/3.0.1. The affected element is an unknown function of the component BGP. The manipulation as part of BGP UPDATE Packet results in information disclosure. This vulnerability is identified as CVE-2017-15865. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in FRRouting up to 2.0.1/3.0.1. Affected is an unknown functionality of the component BGP. The manipulation as part of a BGP UPDATE Packet leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

bgpd in FRRouting (FRR) before 2.0.2 and 3.x before 3.0.2, as used in Cumulus Linux before 3.4.3 and other products, allows remote attackers to obtain sensitive information via a malformed BGP UPDATE packet from a connected peer, which triggers transmission of up to a few thousand unintended bytes because of a mishandled attribute length, aka RN-690 (CM-18492).

The bug was discovered 10/24/2017. The weakness was released 11/08/2017 (Website). The advisory is shared for download at frrouting.org. This vulnerability is traded as CVE-2017-15865 since 10/24/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104732 (FreeBSD : frr -- BGP Mishandled attribute length on Error (bf266183-cec7-11e7-af2d-2047478f2f70)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Upgrading to version 2.0.2 or 3.0.2 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104732) and SecurityFocus (BID 101794†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 104732
Nessus Name: FreeBSD : frr -- BGP Mishandled attribute length on Error (bf266183-cec7-11e7-af2d-2047478f2f70)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: FRRouting 2.0.2/3.0.2

Timelineinfo

10/24/2017 🔍
10/24/2017 +0 days 🔍
11/08/2017 +15 days 🔍
11/08/2017 +0 days 🔍
11/08/2017 +0 days 🔍
11/09/2017 +1 days 🔍
11/21/2017 +12 days 🔍
11/22/2017 +1 days 🔍
01/23/2021 +1158 days 🔍

Sourcesinfo

Advisory: frrouting.org
Researcher: Quentin Young
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-15865 (🔍)
GCVE (CVE): GCVE-0-2017-15865
GCVE (VulDB): GCVE-100-109236
SecurityFocus: 101794 - FRRouting CVE-2017-15865 Information Disclosure Vulnerability

Entryinfo

Created: 11/09/2017 08:14
Updated: 01/23/2021 09:40
Changes: 11/09/2017 08:14 (69), 12/05/2019 10:33 (5), 01/23/2021 09:40 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!