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CVE-2024-37894

Squid vulnerable to heap corruption in ESI assign

MEDIUM
6.3
CVSS Score
Published: June 25, 2024 at 07:39 PM UTC
Updated: June 17, 2026 at 07:39 AM UTC
2 products affected across 1 vendorSquidCache Squid

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Severity
MEDIUM6.3
Exploit prediction
EPSS 6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Squid· Squid Cache
95%
v ≤ 3.5.28v ≤ 4.16v ≤ 5.9v ≤ 6.93.0 ≤ v < 6.10
Affected range stops below 6.10, so it looks safe — our inference, not a vendor statement
Cache Squid· Squid Cache
75%
v ≤ 3.5.28v ≤ 4.16v ≤ 5.9v ≤ 6.93.0 ≤ v < 6.10
Affected range stops below 6.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/squid-cache/squid/commit/f411fe7d75197852f0e5ee85027a06d58dd8df4c.patch
x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20240719-0001/
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/03/msg00009.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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