CVE-2016-2390 json
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 er…
published 2016-04-19 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3474
- cvss
- 5.9
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 25.6%
- EPSS 25.6% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- squid Debian 14, Debian 13, Debian 12 4.1-1
debian advisories DEBIAN-CVE-2016-2390
- squid3 SLES for SAP 11 SP4, SLES 11 SP4 3.1.23-8.16.30.1
suse advisories SUSE-SU-2016:2089-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2016-2390 updated cvss 4.3
squid: incorrect server error handling resulting in denial of service
-
Red Hat Enterprise Linux 5 squid Red Hat Enterprise Linux 6 squid Red Hat Enterprise Linux 7 squid, squid-sysvinit, squid-migration-scriptnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
25.55% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
lists.opensuse.org
/opensuse-security-announce/2016-08/msg00010.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2016-08/msg00040.html
vendor-advisory
-
squid-cache.org
/Advisories/SQUID-2016_1.txt
vendor-advisory
-
lists.squid-cache.org
/pipermail/squid-announce/2016-February/000038.html
mailing-list, vendor-advisory
-
lists.squid-cache.org
/pipermail/squid-announce/2016-February/000037.html
mailing-list, vendor-advisory
-
securitytracker.com
/id/1035045
vdb-entry
- bugs.squid-cache.org /show_bug.cgi?id=4437
Sources
- CVE List CVE-2016-2390
- NVD CVE-2016-2390
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.