fkie_cve-2017-17426
Vulnerability from fkie_nvd
Published
2017-12-05 17:29
Modified
2025-04-20 01:37
Severity ?
Summary
The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check.
References
{
"configurations": [
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"nodes": [
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"criteria": "cpe:2.3:a:gnu:glibc:2.26:*:*:*:*:*:*:*",
"matchCriteriaId": "7B1B17E4-66FB-48F1-A417-2B502955257A",
"vulnerable": true
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"cveTags": [],
"descriptions": [
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"lang": "en",
"value": "The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check."
},
{
"lang": "es",
"value": "La funci\u00f3n malloc en GNU C Library (tambi\u00e9n conocida como glibc o libc6) 2.26 podr\u00eda devolver un bloque de memoria demasiado peque\u00f1o si se intenta asignar un objeto cuyo tama\u00f1o se acerca a SIZE_MAX. Esto podr\u00eda conducir a un desbordamiento de memoria din\u00e1mica (heap). Esto ocurre debido a que la caracter\u00edstica de cach\u00e9 per-thread (tambi\u00e9n conocida como tcache) habilita una ruta de c\u00f3digo a la que le falta una comprobaci\u00f3n de desbordamiento de enteros."
}
],
"id": "CVE-2017-17426",
"lastModified": "2025-04-20T01:37:25.860",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
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"exploitabilityScore": 8.6,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
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"confidentialityImpact": "HIGH",
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"published": "2017-12-05T17:29:00.940",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Issue Tracking"
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"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=22375"
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{
"source": "cve@mitre.org",
"url": "https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=34697694e8a93b325b18f25f7dcded55d6baeaf6"
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"vulnStatus": "Deferred",
"weaknesses": [
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"value": "CWE-190"
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"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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