CVE-2015-5739

high-risk

Published 2017-10-18

The net/http library in net/textproto/reader.go in Go before 1.4.3 does not properly parse HTTP header keys, which allows remote attackers to conduct HTTP request smuggling attacks via a space instead of a hyphen, as demonstrated by "Content Length" instead of "Content-Length."

Do I need to act?

11.9% chance of exploitation in next 30 days

EPSS score — higher than 88% 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 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (16)

Enterprise Linux Server

Enterprise Linux Server Aus

Enterprise Linux Server Eus

Enterprise Linux Server Tus

Fedora

Enterprise Linux Server Aus

Enterprise Linux Server Eus

Enterprise Linux Server Tus

Affected Vendors

Fedoraproject Redhat Golang

References (18)

Third Party Advisory http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167997.ht...

Third Party Advisory http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168029.ht...

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1538.html

Mailing List http://seclists.org/oss-sec/2015/q3/237

Mailing List http://seclists.org/oss-sec/2015/q3/292

Mailing List http://seclists.org/oss-sec/2015/q3/294

Third Party Advisory http://www.securityfocus.com/bid/76281

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1250352

Issue Tracking https://github.com/golang/go/commit/117ddcb83d7f42d6aa72241240af99ded81118e9