CVE-2015-5400: debian debian_linux
Vulnerability summary
CVE-2015-5400 is a medium (CVSS 6.8) vulnerability in debian debian_linux. EPSS estimates a 20.84% chance of exploitation in the next 30 days, higher than 97.5% of scored vulnerabilities. 4 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 28-09-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
20.84%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 20.84% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
4 foundExploit Reference (squid-cache.org)
Maturity: unknown
Exploit Reference (openwall.com)
Maturity: unknown
Exploit Reference (squid-cache.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian3 products
- squid< 4.1-1
- squid3< 3.1.6-1.2+squeeze5 | < 3.1.20-2.2+deb7u3 | < 3.4.8-6+deb8u1
- debian_linuxEOL7.0 | 8.0
Fedoraproject1 product
- fedoraEOL22
Mageia1 product
- squid< 3.4.13-1.1.mga5
Squid-cache1 product
- squid≤ 3.5.2
Ubuntu1 product
- squid3< 3.5.12-1ubuntu6
5 vendors · 7 products
References
21 links- lists.fedoraproject.org/pipermail/package-announce/2016-May/183598.htmlVendor AdvisoryX Refsource FEDORA
- www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patchX Refsource CONFIRMExploitVendor Advisory
- www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10494.patchX Refsource CONFIRMExploitVendor Advisory
Show all 21 references
- www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patchX Refsource CONFIRMExploitVendor Advisory