CVE-2024-23638 (GCVE-0-2024-23638)
Vulnerability from cvelistv5 – Published: 2024-01-23 23:23 – Updated: 2025-06-17 21:19
VLAI?
Title
SQUID-2023:11 Denial of Service in Cache Manager
Summary
Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. As a workaround, prevent access to Cache Manager using Squid's main access control: `http_access deny manager`.
Severity ?
6.5 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| squid-cache | squid |
Affected:
< 6.6
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-01T23:06:25.310Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rx",
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rx"
},
{
"name": "https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382b",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382b"
},
{
"name": "https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8"
},
{
"name": "https://megamansec.github.io/Squid-Security-Audit/stream-assert.html",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://megamansec.github.io/Squid-Security-Audit/stream-assert.html"
},
{
"name": "http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patch",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patch"
},
{
"name": "http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patch",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patch"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20240208-0010/"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7R4KPSO3MQT3KAOZV7LC2GG3CYMCGK7H/"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWQHRDRHDM5PQTU6BHH4C5KGL37X6TVI/"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-23638",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-01-24T16:36:13.499042Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-06-17T21:19:27.553Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "squid",
"vendor": "squid-cache",
"versions": [
{
"status": "affected",
"version": "\u003c 6.6"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid\u0027s patch archives. As a workaround, prevent access to Cache Manager using Squid\u0027s main access control: `http_access deny manager`."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-825",
"description": "CWE-825: Expired Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-04-25T02:06:01.902Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rx",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rx"
},
{
"name": "https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382b"
},
{
"name": "https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8"
},
{
"name": "https://megamansec.github.io/Squid-Security-Audit/stream-assert.html",
"tags": [
"x_refsource_MISC"
],
"url": "https://megamansec.github.io/Squid-Security-Audit/stream-assert.html"
},
{
"name": "http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patch",
"tags": [
"x_refsource_MISC"
],
"url": "http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patch"
},
{
"name": "http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patch",
"tags": [
"x_refsource_MISC"
],
"url": "http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patch"
},
{
"url": "https://security.netapp.com/advisory/ntap-20240208-0010/"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7R4KPSO3MQT3KAOZV7LC2GG3CYMCGK7H/"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWQHRDRHDM5PQTU6BHH4C5KGL37X6TVI/"
}
],
"source": {
"advisory": "GHSA-j49p-553x-48rx",
"discovery": "UNKNOWN"
},
"title": "SQUID-2023:11 Denial of Service in Cache Manager"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2024-23638",
"datePublished": "2024-01-23T23:23:19.070Z",
"dateReserved": "2024-01-19T00:18:53.232Z",
"dateUpdated": "2025-06-17T21:19:27.553Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
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…
Loading…