{"items":[{"id":"NVI-00015409","kind":"vulnerability","title":"SIPSorcery: Malformed UDP packet on the RTP/ICE socket can remotely terminate a media session (DoS)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-28gm-jrmw-xx93","CVE-2026-54632"],"plain_summary":"GitHub lists this reviewed advisory for SIPSorcery. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-654db13bdf85fa9615ea13d9dc5a08ae"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-28T17:01:22.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-654db13bdf85fa9615ea13d9dc5a08ae"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-654db13bdf85fa9615ea13d9dc5a08ae","url":"https://github.com/advisories/GHSA-28gm-jrmw-xx93","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-28gm-jrmw-xx93","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:59:04.660Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-654db13bdf85fa9615ea13d9dc5a08ae"],"technology":"SIPSorcery","known_exclusions":[],"conditions_summary":"### Impact\n\nA single malformed inbound UDP packet on the RTP/ICE socket can remotely terminate an active RTP or WebRTC media session. The packet receive handler indexes packet (and STUN attribute) bytes without sufficient length checks and throws, and the UDP receive loop converted any such exception into a channel `Close` rather than dropping the packet. One small, unauthenticated packet therefore ends the media session.\n\nThis is reachable during ICE connectivity checks — before the DTLS handshake and before any STUN `MESSAGE-INTEGRITY` verification. Because the RTP/ICE port is shared/advertised in the ICE candidates, a peer or on-path attacker can reach it (exposure is lower for a blind off-path attacker that must first learn the ephemeral port). Impact is availability only — no loss of confidentiality or integrity.\n\n### Affected versions\n\nNuGet package `SIPSorcery` `<= 10.0.8`.\n\n### Patches\n\nFixed in `10.0.9`.\n\n### Root cause\n\nTwo issues combine:\n\n1. **Unchecked indexing of untrusted bytes.**\n   - `RTPChannel.OnRTPPacketReceived` read `packet[1]` after only checking the packet was non-empty, so a 1-byte packet threw `IndexOutOfRangeException`.\n   - `STUNAttribute.ParseMessageAtt","public_affected_ranges":["<= 10.0.8"]}],"null_published_at":"2026-11-03T10:03:31.363Z","source_updated_at":"2026-07-28T17:01:22.000Z","source_disclosed_at":"2026-07-28T17:01:19.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-03T09:59:04.660Z"}],"next_cursor":null,"snapshot_revision":"42594"}