135 lines
5.3 KiB
JSON
135 lines
5.3 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-2026-6668",
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"assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
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"state": "PUBLISHED",
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"assignerShortName": "PostgreSQL",
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"dateReserved": "2026-04-20T12:25:46.351Z",
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"datePublished": "2026-09-23T16:04:47.158Z",
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"dateUpdated": "2026-09-23T16:46:13.834Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
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"shortName": "PostgreSQL",
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"dateUpdated": "2026-09-23T16:04:47.158Z"
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},
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"title": "Integer overflow causes an infinite loop in packet buffer growth in PgBouncer",
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"descriptions": [
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{
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"lang": "en",
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"value": "Integer overflow in the packet buffer growth logic in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to cause a denial of service. Sufficiently large input makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is killed. Both unauthenticated and authenticated code paths can reach the overflow."
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}
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],
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"affected": [
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{
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"defaultStatus": "unaffected",
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"product": "PgBouncer",
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"vendor": "n/a",
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"versions": [
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{
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"version": "0",
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"lessThanOrEqual": "1.25.2",
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"versionType": "semver",
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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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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-190",
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"type": "CWE",
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"description": "Integer Overflow or Wraparound"
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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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"cweId": "CWE-835",
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"type": "CWE",
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"description": "Loop with Unreachable Exit Condition ('Infinite Loop')"
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}
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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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"url": "https://www.pgbouncer.org/changelog.html"
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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}
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}
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],
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"configurations": [
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{
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"lang": "en",
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"value": "max_packet_size is left at its default of 2147483647 (default configuration), which is what permits a packet large enough to reach the overflow. No other non-default configuration is required."
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}
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],
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"workarounds": [
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{
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"lang": "en",
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"value": "Set max_packet_size well below 1073741824 so that no single packet can grow a packet buffer past the overflow threshold"
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Thanks to @var77 for finding and reporting this issue.",
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"type": "finder"
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}
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]
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},
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"adp": [
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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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"id": "CVE-2026-6668",
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"role": "CISA Coordinator",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-09-23T16:33:22.320321Z"
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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": "2026-09-23T16:46:13.834Z"
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}
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}
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]
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}
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} |