Cisco IP Phone SPA112/IP Phone SPA525/IP Phone SPA5X5 7.6.2 Certificate certificate validation

Summaryinfo

A vulnerability categorized as critical has been discovered in Cisco IP Phone SPA112, IP Phone SPA525 and IP Phone SPA5X5 7.6.2. Impacted is an unknown function of the component Certificate Handler. The manipulation results in certificate validation. This vulnerability is reported as CVE-2019-1683. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Cisco IP Phone SPA112, IP Phone SPA525 and IP Phone SPA5X5 7.6.2 (IP Phone Software). Affected is an unknown functionality of the component Certificate Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the certificate handling component of the Cisco SPA112, SPA525, and SPA5X5 Series IP Phones could allow an unauthenticated, remote attacker to listen to or control some aspects of a Transport Level Security (TLS)-encrypted Session Initiation Protocol (SIP) conversation. The vulnerability is due to the improper validation of server certificates. An attacker could exploit this vulnerability by crafting a malicious server certificate to present to the client. An exploit could allow an attacker to eavesdrop on TLS-encrypted traffic and potentially route or redirect calls initiated by an affected device. Affected software include version 7.6.2 of the Cisco Small Business SPA525 Series IP Phones and Cisco Small Business SPA5X5 Series IP Phones and version 1.4.2 of the Cisco Small Business SPA500 Series IP Phones and Cisco Small Business SPA112 Series IP Phones.

The bug was discovered 02/20/2019. The weakness was disclosed 02/25/2019 as cisco-sa-20190220-ipphone-cert as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2019-1683 since 12/06/2018. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/19/2023). This vulnerability is assigned to T1587.003 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• IP Phone Software

Vendor

• Cisco

Name

• IP Phone SPA5X5
• IP Phone SPA112
• IP Phone SPA525

Version

• 7.6.2

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion