Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2021-33056 Details

Description

Belledonne Belle-sip before 4.5.20, as used in Linphone and other products, can crash via an invalid From header in a SIP message.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/BelledonneCommunications/belle-sip/commit/116e3eb48fe43ea63eb9f3c4b4b30c48d58d6ff0 CVEPatchThird Party Advisory
https://github.com/BelledonneCommunications/belle-sip/compare/4.5.15...4.5.20 CVEPatchThird Party Advisory
https://github.com/BelledonneCommunications/belle-sip/commit/116e3eb48fe43ea63eb9f3c4b4b30c48d58d6ff0 [email protected]PatchThird Party Advisory
https://github.com/BelledonneCommunications/belle-sip/compare/4.5.15...4.5.20 [email protected]PatchThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')[email protected]

Affected Products

ProductVersions
linphone belle-sip
< 4.5.20

CPE

  • cpe:2.3:a:linphone:belle-sip:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-33056
NVD Published Date:
Aug 12, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]