Media transport downgrade from the secure version (SRTP) to non-secure (RTP) in pjsip
Published Oct 6, 2022 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
Media transport downgrade from the secure version (SRTP) to non-secure (RTP) in pjsip
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
PJSIP is a free and open source multimedia communication library written in C. When processing certain packets, PJSIP may incorrectly switch from using SRTP media transport to using basic RTP upon SRTP restart, causing the media to be sent insecurely. The vulnerability impacts all PJSIP users that use SRTP. The patch is available as commit d2acb9a in the master branch of the project and will be included in version 2.13. Users are advised to manually patch or to upgrade. There are no known workarounds for this vulnerability.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- 20%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- Security advisory ↗
- Patch commit ↗
- GLSA-202210-37 ↗
- [debian-lts-announce] 20230222 [SECURITY] [DLA 3335-1] asterisk security update ↗
- DSA-5358 ↗
Record history
Published Oct 6, 2022 · Last refreshed Oct 23, 2026