GHSA-8892-84WF-CG8F
Vulnerability from github – Published: 2021-08-25 21:00 – Updated: 2023-06-13 21:01
VLAI?
Summary
SyncChannel<T> can move 'T: !Send' to other threads
Details
Affected versions of this crate unconditionally implement Send/Sync for SyncChannel<T>. SyncChannel<T> doesn't provide access to &T but merely serves as a channel that consumes and returns owned T. Users can create UB in safe Rust by sending T: !Send to other threads with SyncChannel::send/recv APIs. Using T = Arc<Cell<_> allows to create data races (which can lead to memory corruption), and using T = MutexGuard<T> allows to unlock a mutex from a thread that didn't lock the mutex.
Severity ?
8.1 (High)
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "signal-simple"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.1.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-06T18:04:55Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "Affected versions of this crate unconditionally implement Send/Sync for `SyncChannel\u003cT\u003e`. `SyncChannel\u003cT\u003e` doesn\u0027t provide access to `\u0026T` but merely serves as a channel that consumes and returns owned `T`. Users can create UB in safe Rust by sending `T: !Send` to other threads with `SyncChannel::send/recv` APIs. Using `T = Arc\u003cCell\u003c_\u003e` allows to create data races (which can lead to memory corruption), and using `T = MutexGuard\u003cT\u003e` allows to unlock a mutex from a thread that didn\u0027t lock the mutex.\n",
"id": "GHSA-8892-84wf-cg8f",
"modified": "2023-06-13T21:01:55Z",
"published": "2021-08-25T21:00:16Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/kitsuneninetails/signal-rust/issues/2"
},
{
"type": "WEB",
"url": "https://github.com/kitsuneninetails/signal-rust"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2020-0126.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "SyncChannel\u003cT\u003e can move \u0027T: !Send\u0027 to other threads"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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