MikroTik Device 6.38.5 UDP Packet resource management

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in MikroTik Device 6.38.5. This vulnerability affects unknown code of the component UDP Packet Handler. Performing a manipulation results in resource management. This vulnerability is known as CVE-2017-8338. Remote exploitation of the attack is possible. No exploit is available. It is suggested to use restrictive firewalling.

Detailsinfo

A vulnerability was found in MikroTik Device 6.38.5. It has been classified as problematic. This affects an unknown functionality of the component UDP Packet Handler. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.

The bug was discovered 05/16/2017. The weakness was published 05/18/2017 (Website). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2017-8338 since 04/29/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

It is possible to mitigate the weakness by firewalling udp.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• MikroTik

Name

• Device

Version

• 6.38.5

License

• commercial

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: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

OpenVAS ID: 103115
OpenVAS Name: MikroTik RouterOS Packet Flooding Multiple Denial-of-Service Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

04/29/2017 🔍
05/16/2017 +17 days 🔍
05/18/2017 +2 days 🔍
05/18/2017 +0 days 🔍
05/18/2017 +0 days 🔍
12/06/2022 +2028 days 🔍

Sourcesinfo

Advisory: 142538
Status: Not defined

CVE: CVE-2017-8338 (🔍)
GCVE (CVE): GCVE-0-2017-8338
GCVE (VulDB): GCVE-100-101445
OSVDB: - CVE-2017-8338 - MikroTik - Denial of Service Issue

Entryinfo

Created: 05/18/2017 16:34
Updated: 12/06/2022 14:34
Changes: 05/18/2017 16:34 (62), 09/30/2020 08:18 (2), 12/06/2022 14:34 (4)
Complete: 🔍
Cache ID: 216:6F0:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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