Search criteria
1 vulnerability by BLUEFEET
CVE-2025-40925 (GCVE-0-2025-40925)
Vulnerability from cvelistv5 – Published: 2025-09-20 12:31 – Updated: 2025-09-22 17:27
VLAI?
Summary
Starch versions 0.14 and earlier generate session ids insecurely.
The default session id generator returns a SHA-1 hash seeded with a counter, the epoch time, the built-in rand function, the PID, and internal Perl reference addresses. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.
Predicable session ids could allow an attacker to gain access to systems.
Severity ?
9.1 (Critical)
CWE
Assigner
References
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2025-40925",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-09-22T16:57:53.410409Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-09-22T17:27:16.336Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Starch",
"product": "Starch",
"programFiles": [
"lib/Starch/Manager.pm"
],
"repo": "https://github.com/bluefeet/Starch",
"vendor": "BLUEFEET",
"versions": [
{
"lessThanOrEqual": "0.14",
"status": "affected",
"version": "0.01",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cdiv\u003eStarch versions 0.14 and earlier generate session ids insecurely.\u003c/div\u003e\u003cdiv\u003eThe default session id generator returns a SHA-1 hash seeded with a counter, the epoch time,\u0026nbsp;the built-in rand function, the PID, and internal Perl reference addresses. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\u003c/div\u003e\u003cdiv\u003ePredicable session ids could allow an attacker to gain access to systems.\u003c/div\u003e"
}
],
"value": "Starch versions 0.14 and earlier generate session ids insecurely.\n\nThe default session id generator returns a SHA-1 hash seeded with a counter, the epoch time, the built-in rand function, the PID, and internal Perl reference addresses. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\n\nPredicable session ids could allow an attacker to gain access to systems."
}
],
"impacts": [
{
"capecId": "CAPEC-115",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-115 Authentication Bypass"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-340",
"description": "CWE-340 Generation of Predictable Numbers or Identifiers",
"lang": "en",
"type": "CWE"
},
{
"cweId": "CWE-338",
"description": "CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-09-20T12:31:34.353Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"url": "https://github.com/bluefeet/Starch/pull/5"
},
{
"tags": [
"patch"
],
"url": "https://github.com/bluefeet/Starch/commit/5573449e64e0660f7ee209d1eab5881d4ccbee3b.patch"
},
{
"url": "https://metacpan.org/dist/Starch/source/lib/Starch/Manager.pm"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Starch versions 0.14 and earlier generate session ids insecurely",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2025-40925",
"datePublished": "2025-09-20T12:31:34.353Z",
"dateReserved": "2025-04-16T09:05:34.362Z",
"dateUpdated": "2025-09-22T17:27:16.336Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}