CVE-2024-37894 (GCVE-0-2024-37894)
Vulnerability from cvelistv5 – Published: 2024-06-25 19:39 – Updated: 2025-11-03 20:38
VLAI
EPSS
VEX
Title
Squid vulnerable to heap corruption in ESI assign
Summary
Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Out-of-bounds Write error when assigning ESI variables, Squid is susceptible to a Memory Corruption error. This error can lead to a Denial of Service attack.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-26 14:07 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
4 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| squid-cache | squid |
Affected:
>= 3.0, <= 3.5.28
Affected: >= 4.0, <= 4.16 Affected: >= 5.0, <= 5.9 Affected: >= 6.0, <= 6.9 |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-37894",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-26T14:07:04.077026Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-06-26T14:07:11.424Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2025-11-03T20:38:02.746Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg",
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"name": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00009.html"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "squid",
"vendor": "squid-cache",
"versions": [
{
"status": "affected",
"version": "\u003e= 3.0, \u003c= 3.5.28"
},
{
"status": "affected",
"version": "\u003e= 4.0, \u003c= 4.16"
},
{
"status": "affected",
"version": "\u003e= 5.0, \u003c= 5.9"
},
{
"status": "affected",
"version": "\u003e= 6.0, \u003c= 6.9"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Out-of-bounds Write error when assigning ESI variables, Squid is susceptible to a Memory Corruption error. This error can lead to a Denial of Service attack."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787: Out-of-bounds Write",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-07-19T13:06:23.373Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"name": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
}
],
"source": {
"advisory": "GHSA-wgvf-q977-9xjg",
"discovery": "UNKNOWN"
},
"title": "Squid vulnerable to heap corruption in ESI assign"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2024-37894",
"datePublished": "2024-06-25T19:39:02.376Z",
"dateReserved": "2024-06-10T19:54:41.361Z",
"dateUpdated": "2025-11-03T20:38:02.746Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2024-37894",
"date": "2026-09-19",
"epss": "0.06255",
"percentile": "0.93239"
},
"fkie_nvd": {
"descriptions": [
{
"lang": "en",
"value": "Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Out-of-bounds Write error when assigning ESI variables, Squid is susceptible to a Memory Corruption error. This error can lead to a Denial of Service attack."
},
{
"lang": "es",
"value": "Squid es un proxy de almacenamiento en cach\u00e9 para la Web que admite HTTP, HTTPS, FTP y m\u00e1s. Debido a un error de escritura fuera de los l\u00edmites al asignar variables ESI, Squid es susceptible a un error de corrupci\u00f3n de memoria. Este error puede provocar un ataque de denegaci\u00f3n de servicio."
}
],
"id": "CVE-2024-37894",
"lastModified": "2024-11-21T09:24:29.227",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 4.0,
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
},
"published": "2024-06-25T20:15:11.873",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"source": "security-advisories@github.com",
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "squid",
"vendor": "squid-cache",
"versions": [
{
"status": "affected",
"version": "\u003e= 3.0, \u003c= 3.5.28"
},
{
"status": "affected",
"version": "\u003e= 4.0, \u003c= 4.16"
},
{
"status": "affected",
"version": "\u003e= 5.0, \u003c= 5.9"
},
{
"status": "affected",
"version": "\u003e= 6.0, \u003c= 6.9"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
"matchCriteriaId": "269E064C-AAF8-4A48-BBAB-76A37C1A0684",
"versionEndExcluding": "6.10",
"versionStartIncluding": "3.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Out-of-bounds Write error when assigning ESI variables, Squid is susceptible to a Memory Corruption error. This error can lead to a Denial of Service attack."
},
{
"lang": "es",
"value": "Squid es un proxy de almacenamiento en cach\u00e9 para la Web que admite HTTP, HTTPS, FTP y m\u00e1s. Debido a un error de escritura fuera de los l\u00edmites al asignar variables ESI, Squid es susceptible a un error de corrupci\u00f3n de memoria. Este error puede provocar un ataque de denegaci\u00f3n de servicio."
}
],
"id": "CVE-2024-37894",
"lastModified": "2026-06-17T07:39:00.220",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 4.0,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-37894",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-26T14:07:04.077026Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-06-25T20:15:11.873",
"references": [
{
"source": "security-advisories@github.com",
"tags": [
"Patch"
],
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"source": "security-advisories@github.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"source": "security-advisories@github.com",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00009.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T11:42:33+00:00",
"cve": "CVE-2024-37894",
"id": "CVE-2024-37894",
"initial_release_date": "2024-06-25T00:00:00+00:00",
"product_status:fixed": "26",
"product_status:known_affected": "13",
"product_status:known_not_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "squid: Out-of-bounds write error may lead to Denial of Service",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-37894.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-01T01:11:13Z",
"cve": "CVE-2024-37894",
"id": "CVE-2024-37894",
"initial_release_date": "2024-06-26T23:18:18Z",
"product_status:known_affected": "425",
"product_status:known_not_affected": "2",
"product_status:recommended": "28",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2024-37894",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-37894.json",
"version": "44"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T20:38:02.746Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg",
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"name": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00009.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-37894",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-26T14:07:04.077026Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-06-26T14:07:08.052Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "squid",
"vendor": "squid-cache",
"versions": [
{
"status": "affected",
"version": "\u003e= 3.0, \u003c= 3.5.28"
},
{
"status": "affected",
"version": "\u003e= 4.0, \u003c= 4.16"
},
{
"status": "affected",
"version": "\u003e= 5.0, \u003c= 5.9"
},
{
"status": "affected",
"version": "\u003e= 6.0, \u003c= 6.9"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Out-of-bounds Write error when assigning ESI variables, Squid is susceptible to a Memory Corruption error. This error can lead to a Denial of Service attack."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"description": "CWE-787: Out-of-bounds Write",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-07-19T13:06:23.373Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg"
},
{
"name": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch"
},
{
"url": "https://security.netapp.com/advisory/ntap-20240719-0001/"
}
],
"source": {
"advisory": "GHSA-wgvf-q977-9xjg",
"discovery": "UNKNOWN"
},
"title": "Squid vulnerable to heap corruption in ESI assign"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2024-37894",
"datePublished": "2024-06-25T19:39:02.376Z",
"dateReserved": "2024-06-10T19:54:41.361Z",
"dateUpdated": "2025-11-03T20:38:02.746Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…