227 lines
9.2 KiB
JSON
227 lines
9.2 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-2026-3945",
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"assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
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"state": "PUBLISHED",
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"assignerShortName": "TuranSec",
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"dateReserved": "2026-03-11T08:30:57.837Z",
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"datePublished": "2026-03-30T07:05:23.295Z",
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"dateUpdated": "2026-08-10T11:43:50.158Z"
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},
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"containers": {
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"cna": {
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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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"description": "CWE-190 Integer Overflow or Wraparound",
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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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"impacts": [
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{
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"descriptions": [
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{
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"lang": "en",
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"value": "An unauthenticated remote attacker can send crafted HTTP requests with chunked transfer encoding to keep worker connections occupied, exhausting the MaxClients limit and causing denial of service for legitimate users."
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "tinyproxy",
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"product": "tinyproxy",
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"versions": [
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{
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"status": "affected",
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"version": "<=1.11.3"
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}
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],
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"defaultStatus": "unaffected"
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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": "An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). The issue occurs because chunk size values are parsed using strtol without properly validating overflow conditions (e.g., errno == ERANGE).",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). The issue occurs because chunk size values are parsed using strtol without properly validating overflow conditions (e.g., errno == ERANGE).</p>"
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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://github.com/tinyproxy/tinyproxy/issues/602",
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"tags": [
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"issue-tracking",
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"technical-description"
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]
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},
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{
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"url": "https://github.com/tinyproxy/tinyproxy/pull/603",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://github.com/tinyproxy/tinyproxy/commit/969852c",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://github.com/tinyproxy/tinyproxy/commit/bb7edc4",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://github.com/tinyproxy/tinyproxy/releases",
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"tags": [
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"release-notes"
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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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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV2_0": {
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"version": "2.0",
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"accessVector": "NETWORK",
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"accessComplexity": "LOW",
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"authentication": "NONE",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "COMPLETE",
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"baseScore": 7.8,
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C"
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}
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},
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"baseSeverity": "HIGH",
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"baseScore": 7.5,
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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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}
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},
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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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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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "HIGH",
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"subAvailabilityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "HIGH",
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"baseScore": 8.7,
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
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}
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"credits": [
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{
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"lang": "en",
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"value": "Muxammadiyev G'iyosiddin",
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"type": "finder"
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}
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],
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"title": "tinyproxy Integer Overflow in HTTP Chunked Transfer-Encoding Parser Leading to Denial of Service",
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"providerMetadata": {
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"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
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"shortName": "TuranSec",
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"dateUpdated": "2026-08-10T11:43:50.158Z"
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},
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"datePublic": "2026-03-30T07:05:23.295Z"
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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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"timestamp": "2026-03-30T15:01:46.663274Z",
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"id": "CVE-2026-3945",
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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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"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": "2026-03-30T15:02:33.584Z"
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}
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}
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]
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}
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} |