Improper input validation in Squid-Cache Squid
CVE-2016-2390
The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.256 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.256 · newest: 0.256 · change: 0.000
Affected products
- Squid-Cache Squid — versions 4.0.4, 4.0.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.squid-cache.org/Advisories/SQUID-2016_1.txt (Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html (vendor-advisory)
- www.securitytracker.com/id/1035045 (vdb-entry)
- lists.squid-cache.org/pipermail/squid-announce/2016-February/000038.html (Vendor Advisory, mailing-list)
- lists.squid-cache.org/pipermail/squid-announce/2016-February/000037.html (Vendor Advisory, mailing-list)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html (vendor-advisory)
- bugs.squid-cache.org/show_bug.cgi
Frequently asked questions
- What is CVE-2016-2390?
- CVE-2016-2390 is a medium-severity vulnerability in Squid-Cache Squid, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2016-04-19.
- How severe is CVE-2016-2390?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2016-2390 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.