Cisco SD-WAN Solution Packet Filter TCP Packet input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco SD-WAN Solution and classified as critical. This vulnerability affects unknown code of the component Packet Filter. This manipulation as part of TCP Packet causes input validation. This vulnerability is handled as CVE-2019-1951. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Cisco SD-WAN Solution (Network Management Software) (the affected version unknown). Affected by this vulnerability is an unknown part of the component Packet Filter. The manipulation as part of a TCP Packet 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 confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the packet filtering features of Cisco SD-WAN Solution could allow an unauthenticated, remote attacker to bypass L3 and L4 traffic filters. The vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by crafting a malicious TCP packet with specific characteristics and sending it to a target device. A successful exploit could allow the attacker to bypass the L3 and L4 traffic filters and inject an arbitrary packet in the network.

The weakness was released 08/08/2019 as cisco-sa-20190807-sd-wan-bypas as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2019-1951 since 12/06/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.8
NVD Vector: 🔍

CNA Base Score: 5.8
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/06/2018 🔍
08/08/2019 +245 days 🔍
08/08/2019 +0 days 🔍
11/21/2023 +1566 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20190807-sd-wan-bypas
Status: Confirmed

CVE: CVE-2019-1951 (🔍)
GCVE (CVE): GCVE-0-2019-1951
GCVE (VulDB): GCVE-100-139681

Entryinfo

Created: 08/08/2019 18:57
Updated: 11/21/2023 14:40
Changes: 08/08/2019 18:57 (39), 07/22/2020 19:05 (3), 11/21/2023 14:40 (30)
Complete: 🔍
Cache ID: 216::103

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