# CVE-2024-35190: Asterisk' res_pjsip_endpoint_identifier_ip: wrongly matches ALL unauthorized SIP requests

> Unauthorized SIP requests are incorrectly identified as local endpoints, bypassing authentication checks in Asterisk PBX systems.

- **Severity:** Medium 5.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 May 2024
- **Updated:** 2 Aug 2024
- **Also known as:** ALPINE-CVE-2024-35190, GHSA-qqxj-v78h-hrf9, UBUNTU-CVE-2024-35190

## What is CVE-2024-35190?

CVE-2024-35190 is a medium-severity authentication bypass vulnerability in asterisk, published on 17 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Asterisk is an open source private branch exchange and telephony toolkit. After upgrade to 18.23.0, ALL unauthorized SIP requests are identified as PJSIP Endpoint of local asterisk server. This vulnerability is fixed in 18.23.1, 20.8.1, and 21.3.1.

Weakness: CWE-670 (Always-Incorrect Control Flow Implementation), CWE-480 (Use of Incorrect Operator), CWE-303 (Incorrect Implementation of Authentication Algorithm)

## Which versions are affected by CVE-2024-35190?

It affects 1 product.


Products: Sangoma Asterisk.

## How do I fix CVE-2024-35190?

Upgrade to a fixed version.

## Is CVE-2024-35190 being exploited?

There is no known exploitation of CVE-2024-35190 in the wild and no public exploit code.

## Other vulnerabilities in asterisk

- [CVE-2024-57520](https://insights.sbomify.com/CVE-2024-57520/): Path traversal in n/a (critical 9.8)
- [CVE-2025-47779](https://insights.sbomify.com/CVE-2025-47779/): Using malformed From header can forge identity with ";" or NULL in name portion (high 7.7)
- [CVE-2025-57767](https://insights.sbomify.com/CVE-2025-57767/): Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request (high 7.5)
- [CVE-2022-37325](https://insights.sbomify.com/CVE-2022-37325/): Memory corruption in n/a (high 7.5)
- [CVE-2025-1131](https://insights.sbomify.com/CVE-2025-1131/): Asterisk Unsafe Shell Sourcing in safe_asterisk Leads to Local Privilege Escalation (high 7.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-35190 and fix it if it is affected.

What it is: CVE-2024-35190 is a medium-severity authentication bypass vulnerability in asterisk, published on 17 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-35190 in the wild and no public exploit code.

Affected product: asterisk. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-35190/ (Markdown: https://insights.sbomify.com/CVE-2024-35190/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-35190
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-35190
- OSV: https://osv.dev/vulnerability/CVE-2024-35190

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-35190/
Summaries are generated and may contain mistakes; the official description above is the record.