High severity7.5NVD Advisory· Published Nov 6, 2023· Updated Jun 17, 2026
CVE-2023-46728
CVE-2023-46728
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
23- osv-coords20 versionspkg:rpm/almalinux/libecappkg:rpm/almalinux/squidpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/squid&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/almalinux/libecap-develpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP4pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP5pkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS
< 1.0.1-2.module_el8.6.0+2741+01592ae8+ 19 more
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 7:4.15-7.module_el8.9.0+3708+6acaac63.5
- (no CPE)range: < 4.17-4.33.1
- (no CPE)range: < 4.17-4.33.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 4.17-150000.5.41.1
- (no CPE)range: < 5.7-150400.3.15.1
- (no CPE)range: < 5.7-150400.3.15.1
- (no CPE)range: < 5.7-150400.3.15.1
- (no CPE)range: < 5.7-150400.3.15.1
- (no CPE)range: < 4.17-150000.5.41.1
< 6.0.1+ 1 more
- (no CPE)range: < 6.0.1
- cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*range: <6.0.1
Patches
Vulnerability mechanics
References
6- github.com/squid-cache/squid/commit/6ea12e8fb590ac6959e9356a81aa3370576568c3nvdPatch
- github.com/squid-cache/squid/security/advisories/GHSA-cg5h-v6vc-w33fnvdVendor Advisory
- lists.debian.org/debian-lts-announce/2025/09/msg00027.htmlnvd
- lists.fedoraproject.org/archives/list/[email protected]/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/nvd
- lists.fedoraproject.org/archives/list/[email protected]/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/nvd
- security.netapp.com/advisory/ntap-20231214-0006/nvd
News mentions
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