VULN/vuln-cve
1
0 Fork 0
Code Pull Requests Actions Activity
Files
c1444140e59c61ba154436ea0cd6284d8a97c3f0
vuln-cve/data/2026/55xxx/CVE-2026-55737.json
T

389 lines
19 KiB
JSON
Raw Blame History

This file contains invisible Unicode characters
This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-55737",
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"state": "PUBLISHED",
"assignerShortName": "EEF",
"dateReserved": "2026-06-17T10:44:34.365Z",
"datePublished": "2026-07-27T15:13:54.699Z",
"dateUpdated": "2026-11-11T18:45:35.184Z"
},
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"erlang",
"external"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/beam/external.c"
],
"programRoutines": [
{
"name": "erlang:binary_to_term/1"
},
{
"name": "erlang:binary_to_term/2"
},
{
"name": "dec_term"
},
{
"name": "decoded_size"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.15",
"status": "unaffected"
},
{
"at": "28.5.0.4",
"status": "unaffected"
},
{
"at": "29.0.4",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "25.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"erlang",
"external"
],
"packageName": "erts",
"packageURL": "pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"emulator/beam/external.c"
],
"programRoutines": [
{
"name": "erlang:binary_to_term/1"
},
{
"name": "erlang:binary_to_term/2"
},
{
"name": "dec_term"
},
{
"name": "decoded_size"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "15.2.7.11",
"status": "unaffected"
},
{
"at": "16.4.0.4",
"status": "unaffected"
},
{
"at": "17.0.4",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "13.0",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"erlang",
"external"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"erts/emulator/beam/external.c"
],
"programRoutines": [
{
"name": "erlang:binary_to_term/1"
},
{
"name": "erlang:binary_to_term/2"
},
{
"name": "dec_term"
},
{
"name": "decoded_size"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "c5210b42a9d3d96f3d25601942ce8122be0f3761",
"status": "affected",
"version": "ebcbb97b4ec223464cac3d94375739a248ddef6e",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "27.3.4.15",
"versionStartIncluding": "25.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "28.5.0.4",
"versionStartIncluding": "28.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "29.0.4",
"versionStartIncluding": "29.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Nick Gunn"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Kiko Fernandez-Reyes"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Sverker Eriksson"
}
],
"datePublic": "2026-07-27T15:13:54.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<p>Signed to Unsigned Conversion Error and Out-of-bounds Write vulnerability in Erlang OTP <code>erts</code> allows an attacker who can supply a crafted Erlang external term format (ETF) binary to <code>binary_to_term/1</code> to corrupt the BEAM heap pointer and crash the virtual machine.</p>\n<p>When decoding a <code>LARGE_TUPLE_EXT</code> term, the validation pass <code>decoded_size()</code> in <code>erts/emulator/beam/external.c</code> reads the 32-bit arity field as unsigned (<code>get_uint32()</code>), while the decode pass <code>dec_term()</code> reads the same field as a signed 32-bit integer (<code>get_int32()</code>) into an <code>int</code>. An arity wire value of <code>0x80000000</code> passes validation as 2147483648 but decodes as -2147483648, so the subsequent <code>hp += n</code> moves the heap allocation pointer backward. Neither pass enforces the runtime tuple-arity limit <code>MAX_ARITYVAL</code>. The result is an out-of-bounds heap write; in practice the VM detects an impossible heap size and aborts, denying service. The required padding is large when uncompressed but the compressed-ETF envelope shrinks it to a small payload on the wire.</p>\n<p>This issue affects OTP from OTP&nbsp;25.0 before OTP&nbsp;27.3.4.15, OTP&nbsp;28.5.0.4, and OTP&nbsp;29.0.4, corresponding to erts from 13.0 before 15.2.7.11, 16.4.0.4, and 17.0.4.</p>"
},
{
"base64": false,
"type": "text/markdown",
"value": "Signed to Unsigned Conversion Error and Out-of-bounds Write vulnerability in Erlang OTP `erts` allows an attacker who can supply a crafted Erlang external term format (ETF) binary to `binary_to_term/1` to corrupt the BEAM heap pointer and crash the virtual machine.\n\nWhen decoding a `LARGE_TUPLE_EXT` term, the validation pass `decoded_size()` in `erts/emulator/beam/external.c` reads the 32-bit arity field as unsigned (`get_uint32()`), while the decode pass `dec_term()` reads the same field as a signed 32-bit integer (`get_int32()`) into an `int`. An arity wire value of `0x80000000` passes validation as 2147483648 but decodes as -2147483648, so the subsequent `hp += n` moves the heap allocation pointer backward. Neither pass enforces the runtime tuple-arity limit `MAX_ARITYVAL`. The result is an out-of-bounds heap write; in practice the VM detects an impossible heap size and aborts, denying service. The required padding is large when uncompressed but the compressed-ETF envelope shrinks it to a small payload on the wire.\n\nThis issue affects OTP from OTP 25.0 before OTP 27.3.4.15, OTP 28.5.0.4, and OTP 29.0.4, corresponding to erts from 13.0 before 15.2.7.11, 16.4.0.4, and 17.0.4."
}
],
"value": "Signed to Unsigned Conversion Error and Out-of-bounds Write vulnerability in Erlang OTP erts allows an attacker who can supply a crafted Erlang external term format (ETF) binary to binary_to_term/1 to corrupt the BEAM heap pointer and crash the virtual machine.\n\nWhen decoding a LARGE_TUPLE_EXT term, the validation pass decoded_size() in erts/emulator/beam/external.c reads the 32-bit arity field as unsigned (get_uint32()), while the decode pass dec_term() reads the same field as a signed 32-bit integer (get_int32()) into an int. An arity wire value of 0x80000000 passes validation as 2147483648 but decodes as -2147483648, so the subsequent hp += n moves the heap allocation pointer backward. Neither pass enforces the runtime tuple-arity limit MAX_ARITYVAL. The result is an out-of-bounds heap write; in practice the VM detects an impossible heap size and aborts, denying service. The required padding is large when uncompressed but the compressed-ETF envelope shrinks it to a small payload on the wire.\n\nThis issue affects OTP from OTP 25.0 before OTP 27.3.4.15, OTP 28.5.0.4, and OTP 29.0.4, corresponding to erts from 13.0 before 15.2.7.11, 16.4.0.4, and 17.0.4."
}
],
"impacts": [
{
"capecId": "CAPEC-92",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-92 Forced Integer Overflow"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-195",
"description": "CWE-195 Signed to Unsigned Conversion Error",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787 Out-of-bounds Write",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF",
"dateUpdated": "2026-11-11T18:45:35.184Z"
},
"references": [
{
"name": "Heap Pointer Corruption via signed/unsigned Mismatch in LARGE_TUPLE_EXT Decoding (binary_to_term/1)",
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-446w-268v-9462"
},
{
"name": "EEF CNA record for CVE-2026-55737",
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-55737.html"
},
{
"name": "OSV record EEF-CVE-2026-55737",
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-55737"
},
{
"name": "Erlang/OTP version ordering",
"tags": [
"x_version-scheme"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
},
{
"name": "Introducing commit ebcbb97 in erlang/otp",
"tags": [
"related"
],
"url": "https://github.com/erlang/otp/commit/ebcbb97b4ec223464cac3d94375739a248ddef6e"
},
{
"name": "Fix commit c5210b4 in erlang/otp",
"tags": [
"patch"
],
"url": "https://github.com/erlang/otp/commit/c5210b42a9d3d96f3d25601942ce8122be0f3761"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Heap pointer corruption via signed/unsigned mismatch in LARGE_TUPLE_EXT decoding in erts external term format decoder"
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-07-27T18:34:45.698069Z",
"id": "CVE-2026-55737",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-27T18:34:55.080Z"
}
}
]
}
}
View Git Blame Copy Permalink