129 lines
6.2 KiB
JSON
129 lines
6.2 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-2026-48100",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-05-20T18:40:45.835Z",
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"datePublished": "2026-09-28T16:43:06.401Z",
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"dateUpdated": "2026-09-28T17:27:18.467Z"
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},
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"containers": {
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"cna": {
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"title": "Payy: agg_agg trailing message slots are unconstrained and allow forged burn messages",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-349",
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"lang": "en",
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"description": "CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data",
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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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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.7,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/polybase/payy/security/advisories/GHSA-fhxc-63vg-9gwr",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/polybase/payy/security/advisories/GHSA-fhxc-63vg-9gwr"
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}
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],
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"affected": [
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{
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"vendor": "polybase",
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"product": "payy",
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"versions": [
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{
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"version": "< 1.3.0",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-09-28T16:43:06.401Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Payy is an Ethereum L2 zk-rollup for privacy preserving and regulatory compliant transactions. Prior to version 1.3.0, agg_agg forwards the compacted message stream from its inner proofs into a public messages: [Field; 1000] array, but it never checks that the unused tail of the outer array is zero. A registered prover can build a valid agg_final proof for an approved rollup block while inserting an extra burn message after the real messages. RollupV1.verifyRollup() then parses that public input as a normal burn and transfers USDC from the rollup contract to the attacker. This is a severe circuit soundness failure: the proof system accepts a public statement whose messages array is not fully derived from the verified inner proofs. On the current deployment, verifyRollup() is restricted to the existing allowlisted prover, so a fresh public caller cannot submit the invalid proof directly. That gate limits who can reach L1 today; it does not make the circuit statement sound. The issue becomes permissionless under the prover model described in the Payy whitepaper. Section 3.3.2 states: \"To join as a prover, the prover is required to submit a small stake\", and Section 3.3.1 states that if a prover fails to submit, \"other nodes can submit the block proof instead.\" In that model, an attacker only needs to become a registered prover and use public validator approval data for an already approved block. This issue has been patched in version 1.3.0."
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}
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],
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"source": {
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"advisory": "GHSA-fhxc-63vg-9gwr",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/polybase/payy/security/advisories/GHSA-fhxc-63vg-9gwr",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-28T17:20:42.562536Z",
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"id": "CVE-2026-48100",
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"options": [
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{
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"Exploitation": "poc"
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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": "partial"
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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": "2026-09-28T17:27:18.467Z"
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}
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}
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]
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}
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} |