CVE-2015-5739

CRITICAL severity · CVSS 9.8 · CWE-444

9.8CVSS CRITICAL

Summary

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."

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)12%

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1250352 ↗

Additional information

NVD record
https://bugzilla.redhat.com/show_bug.cgi?id=1250352Patch
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167997.htmlAdvisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168029.htmlAdvisory
http://rhn.redhat.com/errata/RHSA-2016-1538.htmlAdvisory
http://seclists.org/oss-sec/2015/q3/237Advisory
http://seclists.org/oss-sec/2015/q3/292Advisory
http://seclists.org/oss-sec/2015/q3/294Advisory
http://www.securityfocus.com/bid/76281Advisory