CVE catalog
CVE-2015-5400
squid: CVE-2015-5400
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 20.84% · Oct 25, 2026
Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend proxy via a CONNECT request.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | squid | sid | 7.7-1 | fixed |
| Debian | squid | forky | 7.7-1 | fixed |
| Debian | squid | trixie | 6.13-2+deb13u3 | fixed |
| Debian | squid | trixie-security | 6.13-2+deb13u2 | fixed |
| Debian | squid | bookworm | 5.7-2+deb12u5 | fixed |
| Debian | squid | bookworm-security | 5.7-2+deb12u6 | fixed |
| Ubuntu | squid3 | 16.04 | 3.3.8-1ubuntu16 | vulnerable |
| Ubuntu | squid3 | 16.04 | 3.3.8-1ubuntu17 | vulnerable |
| Ubuntu | squid3 | 16.04 | 3.5.12-1ubuntu6 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | squid | source | sid | 4.1-1 | not yet assigned | Not reported | Not reported |
| Debian | squid | source | forky | 4.1-1 | not yet assigned | Not reported | Not reported |
| Debian | squid | source | trixie | 4.1-1 | not yet assigned | Not reported | Not reported |
| Debian | squid | source | bookworm | 4.1-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | squid3 | deb | 16.04 | 3.5.12-1ubuntu6 | Not reported | UBUNTU-CVE-2015-5400 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [squid]Unknown
Details (4)
5.7-2+deb12u5· amd64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u5· arm64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· amd64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· arm64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
- [squid-cgi]Unknown
Source package: [squid]
Details (4)
5.7-2+deb12u5· amd64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u5· arm64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· amd64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· arm64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
- [squidclient]Unknown
Source package: [squid]
Details (4)
5.7-2+deb12u5· amd64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u5· arm64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· amd64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· arm64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
- [squid-common]Unknown
Source package: [squid]
Details (4)
5.7-2+deb12u5· all · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u5· all · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· all · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· all · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
- [squid-openssl]Unknown
Source package: [squid]
Details (4)
5.7-2+deb12u5· amd64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u5· arm64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· amd64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· arm64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
- [squid-purge]Unknown
Source package: [squid]
Details (4)
5.7-2+deb12u5· amd64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u5· arm64 · bookwormFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· amd64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
5.7-2+deb12u6· arm64 · bookworm-securityFixed · Fixed:
4.1-1dsa · squid · debian · bookworm; dsa · squid · debian · 12
[Debian 13 (Trixie)]
- [squid]Unknown
Details (4)
6.13-2+deb13u2· amd64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· amd64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
- [squid-cgi]Unknown
Source package: [squid]
Details (4)
6.13-2+deb13u2· amd64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· amd64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
- [squidclient]Unknown
Source package: [squid]
Details (4)
6.13-2+deb13u2· amd64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· amd64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
- [squid-common]Unknown
Source package: [squid]
Details (4)
6.13-2+deb13u2· all · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· all · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· all · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· all · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
- [squid-openssl]Unknown
Source package: [squid]
Details (4)
6.13-2+deb13u2· amd64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· amd64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
- [squid-purge]Unknown
Source package: [squid]
Details (4)
6.13-2+deb13u2· amd64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixieFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· amd64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
6.13-2+deb13u2· arm64 · trixie-securityFixed · Fixed:
4.1-1dsa · squid · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2016_2008-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2015-5400]
- [https://osv.dev/vulnerability/DLA-286-1]
- [https://osv.dev/vulnerability/DSA-3327-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2015-5400]
- [https://security-tracker.debian.org/tracker/CVE-2015-5400]
- [https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-5400.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]