176 lines
7.3 KiB
JSON
176 lines
7.3 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-75870",
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"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
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"state": "PUBLISHED",
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"assignerShortName": "CPANSec",
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"dateReserved": "2026-08-18T11:59:49.642Z",
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"datePublished": "2026-08-22T13:35:58.346Z",
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"dateUpdated": "2026-08-25T19:28:36.443Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://cpan.org/modules",
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"defaultStatus": "unaffected",
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"modules": [
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"Punk"
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],
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"packageName": "Punk",
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"packageURL": "pkg:cpan/Punk",
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"programFiles": [
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"xs/app.xs",
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"include/punk/punk_session.h"
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],
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"programRoutines": [
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{
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"name": "Punk::App::session"
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},
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{
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"name": "ps_load"
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},
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{
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"name": "ps_writeback"
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}
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],
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"versions": [
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{
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"lessThan": "0.18",
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"status": "affected",
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"version": "0",
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"versionType": "custom"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Punk versions before 0.18 for Perl allow session cookie forgery via an empty default HMAC key when a session is declared without a secret.\n\nThe session keyword freezes its options onto the application as given: it does not require a secret, warn, or refuse to start when one is absent. The cookie read and the write-back both default that key to the empty string, so a declaration with no secret option, or with an undefined or empty one, signs and verifies with a zero-length HMAC-SHA256 key.\n\nAn attacker who knows the cookie format can then mint one offline carrying any contents the session holds, such as a user identifier or a role. Nothing marks the misconfiguration at runtime: cookies are well formed and sessions round-trip as expected."
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-1394",
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"description": "CWE-1394 Use of Default Cryptographic Key",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
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"shortName": "CPANSec",
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"dateUpdated": "2026-08-22T13:35:58.346Z"
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},
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"references": [
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{
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"tags": [
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"technical-description"
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],
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"url": "https://metacpan.org/release/LNATION/Punk-0.17/source/include/punk/punk_session.h"
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},
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{
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"tags": [
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"technical-description"
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],
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"url": "https://metacpan.org/release/LNATION/Punk-0.17/view/lib/Punk.pm"
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},
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{
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"tags": [
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"release-notes"
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],
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"url": "https://metacpan.org/release/LNATION/Punk-0.18/source/Changes"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Upgrade to Punk 0.18 or later."
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "Punk versions before 0.18 for Perl allow session cookie forgery via an empty default HMAC key when a session is declared without a secret",
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"workarounds": [
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{
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"lang": "en",
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"value": "For deployments that cannot upgrade to 0.18, declare the session keyword with a non-empty secret. The secret keyword fails closed, so sourcing the key through it turns a missing configuration path or an unset environment variable into a startup error."
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}
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],
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"x_generator": {
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"engine": "cpansec-cna-tool 0.1"
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}
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},
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"adp": [
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "http://www.openwall.com/lists/oss-security/2026/08/22/5"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2026-08-22T19:07:10.053Z"
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}
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},
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 9.1,
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"attackVector": "NETWORK",
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"baseSeverity": "CRITICAL",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "NONE",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-25T19:27:34.454527Z",
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"id": "CVE-2026-75870",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-25T19:28:36.443Z"
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}
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}
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]
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}
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} |