176 lines
7.7 KiB
JSON
176 lines
7.7 KiB
JSON
{
|
||
"dataType": "CVE_RECORD",
|
||
"dataVersion": "5.2",
|
||
"cveMetadata": {
|
||
"cveId": "CVE-2026-56391",
|
||
"assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
|
||
"state": "PUBLISHED",
|
||
"assignerShortName": "CERT-PL",
|
||
"dateReserved": "2026-06-21T11:40:32.790Z",
|
||
"datePublished": "2026-07-24T07:44:45.581Z",
|
||
"dateUpdated": "2026-07-24T12:31:34.245Z"
|
||
},
|
||
"containers": {
|
||
"cna": {
|
||
"providerMetadata": {
|
||
"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
|
||
"shortName": "CERT-PL",
|
||
"dateUpdated": "2026-07-24T07:44:45.581Z"
|
||
},
|
||
"title": "Out‑of‑bounds Read in GNU coreutils",
|
||
"problemTypes": [
|
||
{
|
||
"descriptions": [
|
||
{
|
||
"lang": "en",
|
||
"cweId": "CWE-125",
|
||
"description": "CWE-125 Out-of-bounds Read",
|
||
"type": "CWE"
|
||
}
|
||
]
|
||
}
|
||
],
|
||
"affected": [
|
||
{
|
||
"vendor": "GNU",
|
||
"product": "coreutils",
|
||
"modules": [
|
||
"uniq"
|
||
],
|
||
"versions": [
|
||
{
|
||
"status": "affected",
|
||
"version": "9.5",
|
||
"lessThanOrEqual": "9.11",
|
||
"versionType": "custom"
|
||
}
|
||
],
|
||
"defaultStatus": "unaffected"
|
||
}
|
||
],
|
||
"descriptions": [
|
||
{
|
||
"lang": "en",
|
||
"value": "GNU coreutils uniq is vulnerable to an out‑of‑bounds read due to incorrect handling of multibyte input when the -w (--check-chars) option is used. The find_field() function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input, resulting in an inflated length value. \nThis incorrect length is later used in a memcmp operation, causing reads beyond the allocated buffer when processing crafted multibyte input.\n\nWhen running GNU coreutils uniq with attacker-provided arguments, this behavior leads to a crash and potential adjacent heap memory exposure.\n\n\nThis issue has been fixed in the commit d64e35a8a4c0e4608321433e0d84d917e4e36371.",
|
||
"supportingMedia": [
|
||
{
|
||
"type": "text/html",
|
||
"base64": false,
|
||
"value": "GNU coreutils <i>uniq</i> is vulnerable to an out‑of‑bounds read due to incorrect handling of multibyte input when the <i>-w (--check-chars)</i> option is used. The <i>find_field()</i> function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input, resulting in an inflated length value. <br>This incorrect length is later used in a memcmp operation, causing reads beyond the allocated buffer when processing crafted multibyte input.<br><br>When running GNU coreutils <i>uniq</i> with attacker-provided arguments, this behavior leads to a crash and potential adjacent heap memory exposure.<br><p>This issue has been fixed in the commit d64e35a8a4c0e4608321433e0d84d917e4e36371.</p>"
|
||
}
|
||
]
|
||
}
|
||
],
|
||
"tags": [
|
||
"x_open-source"
|
||
],
|
||
"references": [
|
||
{
|
||
"url": "https://cert.pl/en/posts/2026/07/CVE-2026-56391",
|
||
"tags": [
|
||
"third-party-advisory"
|
||
]
|
||
},
|
||
{
|
||
"url": "https://git.savannah.gnu.org/cgit/coreutils.git/",
|
||
"tags": [
|
||
"product"
|
||
]
|
||
},
|
||
{
|
||
"url": "https://git.savannah.gnu.org/cgit/coreutils.git/commit/?id=d64e35a8a4c0e4608321433e0d84d917e4e36371",
|
||
"tags": [
|
||
"patch"
|
||
]
|
||
}
|
||
],
|
||
"metrics": [
|
||
{
|
||
"format": "CVSS",
|
||
"scenarios": [
|
||
{
|
||
"lang": "en",
|
||
"value": "GENERAL"
|
||
}
|
||
],
|
||
"cvssV4_0": {
|
||
"attackVector": "LOCAL",
|
||
"attackComplexity": "LOW",
|
||
"attackRequirements": "NONE",
|
||
"privilegesRequired": "NONE",
|
||
"userInteraction": "ACTIVE",
|
||
"vulnConfidentialityImpact": "LOW",
|
||
"subConfidentialityImpact": "NONE",
|
||
"vulnIntegrityImpact": "NONE",
|
||
"subIntegrityImpact": "NONE",
|
||
"vulnAvailabilityImpact": "LOW",
|
||
"subAvailabilityImpact": "NONE",
|
||
"exploitMaturity": "NOT_DEFINED",
|
||
"Safety": "NOT_DEFINED",
|
||
"Automatable": "NOT_DEFINED",
|
||
"Recovery": "NOT_DEFINED",
|
||
"valueDensity": "NOT_DEFINED",
|
||
"vulnerabilityResponseEffort": "NOT_DEFINED",
|
||
"providerUrgency": "NOT_DEFINED",
|
||
"version": "4.0",
|
||
"baseSeverity": "MEDIUM",
|
||
"baseScore": 4.6,
|
||
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
|
||
}
|
||
}
|
||
],
|
||
"credits": [
|
||
{
|
||
"lang": "en",
|
||
"value": "Michał Majchrowicz (AFINE Team)",
|
||
"type": "finder"
|
||
},
|
||
{
|
||
"lang": "en",
|
||
"value": "Marcin Wyczechowski (AFINE Team)",
|
||
"type": "finder"
|
||
}
|
||
],
|
||
"source": {
|
||
"discovery": "EXTERNAL"
|
||
},
|
||
"x_generator": {
|
||
"engine": "Vulnogram 0.2.0"
|
||
}
|
||
},
|
||
"adp": [
|
||
{
|
||
"metrics": [
|
||
{
|
||
"other": {
|
||
"type": "ssvc",
|
||
"content": {
|
||
"timestamp": "2026-07-24T12:31:16.655541Z",
|
||
"id": "CVE-2026-56391",
|
||
"options": [
|
||
{
|
||
"Exploitation": "none"
|
||
},
|
||
{
|
||
"Automatable": "no"
|
||
},
|
||
{
|
||
"Technical Impact": "partial"
|
||
}
|
||
],
|
||
"role": "CISA Coordinator",
|
||
"version": "2.0.3"
|
||
}
|
||
}
|
||
}
|
||
],
|
||
"title": "CISA ADP Vulnrichment",
|
||
"providerMetadata": {
|
||
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
||
"shortName": "CISA-ADP",
|
||
"dateUpdated": "2026-07-24T12:31:34.245Z"
|
||
}
|
||
}
|
||
]
|
||
}
|
||
} |