Vulnerability Report

CVE-2023-46728

Title: Squid-Cache Squid Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2023-46728.

CWE Category CWE-476
Published Date Nov 06, 2023
Modified Date Nov 03, 2025
Exploit Status Not Found
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
5.95%

Vulnerability Summary

CVE-2023-46728: Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a NULL pointer dereference bug Squid is vulnerable to a Denial of Service attack against Squid's Gopher gateway. The gopher protocol is always available and enabled in Squid prior to Squid 6.0.1. Responses triggering this bug are possible to be received from any gopher server, even those without malicious intent. Gopher support has been removed in Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should reject all gopher URL requests.

Impacted Vendors

S
squid 1
S
squid-cache 1

Reference Links

https://github.com/squid-cache/squid/commit/6ea12e8fb590ac6959e9356a81aa3370576568c3 https://github.com/squid-cache/squid/security/advisories/GHSA-cg5h-v6vc-w33f https://lists.fedoraproject.org/archives/list/[email protected]/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/ https://lists.fedoraproject.org/archives/list/[email protected]/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/ https://security.netapp.com/advisory/ntap-20231214-0006/ https://github.com/squid-cache/squid/commit/6ea12e8fb590ac6959e9356a81aa3370576568c3 https://github.com/squid-cache/squid/security/advisories/GHSA-cg5h-v6vc-w33f https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html https://lists.fedoraproject.org/archives/list/[email protected]/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/ https://lists.fedoraproject.org/archives/list/[email protected]/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/ https://security.netapp.com/advisory/ntap-20231214-0006/
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-46728 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.