CVE-2017-2628 Auth bypass in curl

Critical 9.8 Published 12 Mar 2018 Updated 5 Aug 2024

A backporting error in Red Hat's curl package failed to properly disable GSSAPI, potentially allowing authentication bypass in HTTP Negotiate scenarios.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2017-2628?

CVE-2017-2628 is a critical authentication bypass vulnerability in Haxx Curl, published on 12 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

curl, as shipped in Red Hat Enterprise Linux 6 before version 7.19.7-53, did not correctly backport the fix for CVE-2015-3148 because it did not reflect the fact that the HAVE_GSSAPI define was meanwhile substituted by USE_HTTP_NEGOTIATE. This issue was introduced in RHEL 6.7 and affects RHEL 6 curl only.

Weakness: CWE-287

Which versions are affected by CVE-2017-2628?

It affects 1 product.

Linux distribution packages (16)

`curl` Red Hat:enterprise_linux:6::client	All versions	`0:7.19.7-53.el6_9`
`curl-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`0:7.19.7-53.el6_9`
`libcurl` Red Hat:enterprise_linux:6::client	All versions	`0:7.19.7-53.el6_9`
`libcurl-devel` Red Hat:enterprise_linux:6::client	All versions	`0:7.19.7-53.el6_9`
`curl` Red Hat:enterprise_linux:6::computenode	All versions	`0:7.19.7-53.el6_9`
`curl-debuginfo` Red Hat:enterprise_linux:6::computenode	All versions	`0:7.19.7-53.el6_9`
`libcurl` Red Hat:enterprise_linux:6::computenode	All versions	`0:7.19.7-53.el6_9`
`libcurl-devel` Red Hat:enterprise_linux:6::computenode	All versions	`0:7.19.7-53.el6_9`
`curl` Red Hat:enterprise_linux:6::server	All versions	`0:7.19.7-53.el6_9`
`curl-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:7.19.7-53.el6_9`
`libcurl` Red Hat:enterprise_linux:6::server	All versions	`0:7.19.7-53.el6_9`
`libcurl-devel` Red Hat:enterprise_linux:6::server	All versions	`0:7.19.7-53.el6_9`
`curl` Red Hat:enterprise_linux:6::workstation	All versions	`0:7.19.7-53.el6_9`
`curl-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`0:7.19.7-53.el6_9`
`libcurl` Red Hat:enterprise_linux:6::workstation	All versions	`0:7.19.7-53.el6_9`
`libcurl-devel` Red Hat:enterprise_linux:6::workstation	All versions	`0:7.19.7-53.el6_9`

Products include Haxx Curl.

How do I fix CVE-2017-2628?

Apply the vendor's patch.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2017-2628 being exploited?

There is no known exploitation of CVE-2017-2628 in the wild and no public exploit code.

All Haxx Curl vulnerabilities

Sources

Also known as GHSA-9v4c-xqrp-4vv9, RHSA-2017:0847.