150 lines
6.2 KiB
JSON
150 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-2026-73261",
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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": "2026-08-11T17:18:01.598Z",
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"datePublished": "2026-10-14T18:25:41.102Z",
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"dateUpdated": "2026-10-29T13:46:18.474Z"
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},
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"containers": {
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"cna": {
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"title": "Mongoose: handle_opt() missing opts[1] > len check — 1-byte OOB read corrupts TCP MSS, silences mg_send() per connection",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-20",
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"lang": "en",
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"description": "CWE-20: Improper Input Validation",
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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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"descriptions": [
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{
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"cweId": "CWE-125",
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"lang": "en",
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"description": "CWE-125: Out-of-bounds Read",
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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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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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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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"version": "3.1"
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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/cesanta/mongoose/security/advisories/GHSA-3fmr-92g4-wchx",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/cesanta/mongoose/security/advisories/GHSA-3fmr-92g4-wchx"
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},
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{
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"name": "https://github.com/cesanta/mongoose/commit/cc7c6d2d18c28fcc6d085633dddd88402946140a",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/cesanta/mongoose/commit/cc7c6d2d18c28fcc6d085633dddd88402946140a"
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},
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{
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"name": "https://github.com/cesanta/mongoose/releases/tag/7.23",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/cesanta/mongoose/releases/tag/7.23"
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}
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],
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"affected": [
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{
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"vendor": "cesanta",
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"product": "mongoose",
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"versions": [
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{
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"version": "< 7.23",
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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": "2026-10-14T18:25:41.102Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Mongoose is an embedded web server and network library. Prior to 7.23, the built-in TCP/IP stack enabled by MG_ENABLE_TCPIP in src/net_builtin.c does not reject a TCP option whose declared opts[1] length exceeds the remaining option bytes. In handle_opt(), a NOP followed by a truncated MSS option causes opts[3] to be read outside the declared options area and used as the low byte of dmss. An unauthenticated remote peer can corrupt the per-connection MSS value so later mg_send() calls transmit truncated or zero-length application payloads while the TCP connection otherwise appears healthy. This issue is fixed in version 7.23."
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}
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],
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"source": {
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"advisory": "GHSA-3fmr-92g4-wchx",
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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/cesanta/mongoose/security/advisories/GHSA-3fmr-92g4-wchx",
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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": "2026-10-29T13:46:11.110687Z",
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"id": "CVE-2026-73261",
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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": "2026-10-29T13:46:18.474Z"
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}
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}
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]
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}
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} |