rustsec-2020-0015
Vulnerability from osv_rustsec
Published
2020-04-25 12:00
Modified
2023-06-13 13:10
Summary
Crash causing Denial of Service attack
Details
Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack.
Severity
7.5 (High)
References
{
"affected": [
{
"database_specific": {
"categories": [
"denial-of-service"
],
"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": [],
"os": []
}
},
"package": {
"ecosystem": "crates.io",
"name": "openssl-src",
"purl": "pkg:cargo/openssl-src"
},
"ranges": [
{
"events": [
{
"introduced": "111.6.0"
},
{
"fixed": "111.9.0"
}
],
"type": "SEMVER"
}
],
"versions": []
}
],
"aliases": [
"CVE-2020-1967",
"GHSA-jq65-29v4-4x35"
],
"database_specific": {
"license": "CC0-1.0"
},
"details": "Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 \nhandshake may crash due to a NULL pointer dereference as a result of incorrect handling of the \n\"signature_algorithms_cert\" TLS extension. The crash occurs if an invalid or unrecognised signature \nalgorithm is received from the peer. This could be exploited by a malicious peer in a Denial of \nService attack.",
"id": "RUSTSEC-2020-0015",
"modified": "2023-06-13T13:10:24Z",
"published": "2020-04-25T12:00:00Z",
"references": [
{
"type": "PACKAGE",
"url": "https://crates.io/crates/openssl-src"
},
{
"type": "ADVISORY",
"url": "https://rustsec.org/advisories/RUSTSEC-2020-0015.html"
},
{
"type": "WEB",
"url": "https://www.openssl.org/news/secadv/20200421.txt"
}
],
"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": "Crash causing Denial of Service attack"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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