{"items":[{"id":"NVI-00018528","kind":"vulnerability","title":"OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash agent","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wp73-mwgf-4jq9","CVE-2026-45676"],"plain_summary":"GitHub lists this reviewed advisory for go.opentelemetry.io/obi. 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-37287973695f9db02f2c53f5695d1fd0"],"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":"2026-06-09T10:57:54.000Z","value":"5.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-37287973695f9db02f2c53f5695d1fd0"}],"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-37287973695f9db02f2c53f5695d1fd0","url":"https://github.com/advisories/GHSA-wp73-mwgf-4jq9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wp73-mwgf-4jq9","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T20:56:39.448Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-37287973695f9db02f2c53f5695d1fd0"],"technology":"go.opentelemetry.io/obi","known_exclusions":[],"conditions_summary":"### Summary\n\nOBI's replacement ELF parser trusts section offsets, counts, and string offsets from the executable file. A crafted local ELF can make OBI dereference invalid section pointers or slice past string tables, causing the agent to panic while determining the process language.\n\n### Details\n\n`matchExeSymbols `iterates over sections and uses offsets/symbol names from the unvalidated `fastelf `context; nil section pointers or out-of-range offsets can trigger panics during dereference/slicing.\n\nhttps://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/blob/cec36c1b872beba9d17956bfde75dee3249a1516/pkg/internal/exec/proclang_linux.go#L133-L165\n\n`GetCStringUnsafe` and `ReadStruct` perform unsafe slicing and pointer conversion without guarding against out-of-range or negative offsets derived from ELF data, enabling panics on malformed input.\n\nhttps://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/blob/cec36c1b872beba9d17956bfde75dee3249a1516/pkg/internal/fastelf/fastelf.go#L201-L213\n\n`NewElfContextFromData `trusts `Shoff`/`Shnum`/`Phnum `from the ELF header, converting them to `int `and populating sections/segments without validating offsets or ensuring `Rea","public_affected_ranges":["< 0.9.0"]}],"null_published_at":"2026-11-07T07:07:39.848Z","source_updated_at":"2026-06-09T10:57:54.000Z","source_disclosed_at":"2026-05-18T17:56:06.000Z","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":"2026-11-06T20:56:39.448Z"}],"next_cursor":null,"snapshot_revision":"42594"}