rustsec-2019-0017
Vulnerability from osv_rustsec
Published
2019-09-01 12:00
Modified
2023-06-13 13:10
Summary
Panic during initialization of Lazy<T> might trigger undefined behavior
Details
If during the first dereference of Lazy the initialization function panics,
subsequent dereferences will execute std::hints::unreachable_unchecked.
Applications with panic = "abort" are not affected, as there will be no
subsequent dereferences.
{
"affected": [
{
"database_specific": {
"categories": [],
"cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"informational": null
},
"ecosystem_specific": {
"affected_functions": null,
"affects": {
"arch": [],
"functions": [
"once_cell::sync::Lazy::deref",
"once_cell::sync::Lazy::force",
"once_cell::unsync::Lazy::deref",
"once_cell::unsync::Lazy::force"
],
"os": []
}
},
"package": {
"ecosystem": "crates.io",
"name": "once_cell",
"purl": "pkg:cargo/once_cell"
},
"ranges": [
{
"events": [
{
"introduced": "0.2.5"
},
{
"fixed": "1.0.1"
}
],
"type": "SEMVER"
}
],
"versions": []
}
],
"aliases": [
"CVE-2019-16141",
"GHSA-7j44-fv4x-79g9"
],
"database_specific": {
"license": "CC0-1.0"
},
"details": "If during the first dereference of Lazy\u003cT\u003e the initialization function panics,\nsubsequent dereferences will execute `std::hints::unreachable_unchecked`.\n\nApplications with `panic = \"abort\"` are not affected, as there will be no\nsubsequent dereferences.",
"id": "RUSTSEC-2019-0017",
"modified": "2023-06-13T13:10:24Z",
"published": "2019-09-01T12:00:00Z",
"references": [
{
"type": "PACKAGE",
"url": "https://crates.io/crates/once_cell"
},
{
"type": "ADVISORY",
"url": "https://rustsec.org/advisories/RUSTSEC-2019-0017.html"
},
{
"type": "REPORT",
"url": "https://github.com/matklad/once_cell/issues/46"
}
],
"related": [],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Panic during initialization of Lazy\u003cT\u003e might trigger undefined behavior"
}
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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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