CVE-2021-33056 - Vulnerability Details - OpenCVE

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.

Published: 2021-08-12

Score: 7.5 High

EPSS: 1.3% Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-19771	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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.01294.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/BelledonneCommunications/belle-sip/commit/116e3eb48fe43ea63eb9f3c4b4b30c48d58d6ff0
https://github.com/BelledonneCommunications/belle-sip/compare/4.5.15...4.5.20

History

No history.

Subscriptions

Linphone Belle-sip

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-08-12T20:54:37.000Z

Updated: 2024-08-03T23:42:19.652Z

Reserved: 2021-05-17T00:00:00.000Z

Link: CVE-2021-33056

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-08-12T21:15:07.457

Modified: 2026-06-17T03:54:04.580

Link: CVE-2021-33056

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

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