CVE-2016-4555

critical-risk

Published 2016-05-10

client_side_request.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via crafted Edge Side Includes (ESI) responses.

Do I need to act?

62.8% chance of exploitation in next 30 days

EPSS score — higher than 37% of all CVEs

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (20)

Squid

Affected Vendors

Oracle Canonical Squid-Cache

References (32)

Exploit http://bugs.squid-cache.org/show_bug.cgi?id=4455

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html

http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html

http://www.debian.org/security/2016/dsa-3625

Patch http://www.openwall.com/lists/oss-security/2016/05/06/3

Patch http://www.openwall.com/lists/oss-security/2016/05/06/5

Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.h...

Third Party Advisory http://www.securitytracker.com/id/1035770

Vendor Advisory http://www.squid-cache.org/Advisories/SQUID-2016_9.txt

Patch http://www.squid-cache.org/Versions/v3/3.4/changesets/SQUID-2016_9.patch

Patch http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_9.patch

Third Party Advisory http://www.ubuntu.com/usn/USN-2995-1

https://access.redhat.com/errata/RHSA-2016:1139

https://access.redhat.com/errata/RHSA-2016:1140

https://security.gentoo.org/glsa/201607-01

Exploit http://bugs.squid-cache.org/show_bug.cgi?id=4455

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html

http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html

and 12 more references

/ 100

critical-risk

Severity 26/34 · High

Exploitability 19/34 · Moderate

Exposure 33/34 · Critical