CVE-2017-15111 keycloak-httpd-client-install symlink attack vulnerability

Medium 5.5 Published Updated

Local attackers can overwrite arbitrary files via symbolic link attacks due to insecure temporary file creation in the Keycloak HTTPD client installer.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2017-15111?

CVE-2017-15111 is a medium-severity path traversal vulnerability in jdennis keycloak-httpd-client-install, published on 20 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

keycloak-httpd-client-install versions before 0.8 insecurely creates temporary file allowing local attackers to overwrite other files via symbolic link.

Weakness: CWE-59, CWE-377

Which versions are affected by CVE-2017-15111?

3 open source packages ship an affected version, including keycloak-httpd-client-install. It affects 1 product.

PackageAffectedFixed in
keycloak-httpd-client-install PyPIAll versions0.8
keycloak-httpd-client-install PyPIAll versions0.8
keycloak-httpd-client-install PyPIAll versions0.8

Products include Keycloak-Httpd-Client-Install Project Keycloak-Httpd-Client-Install.

How do I fix CVE-2017-15111?

Upgrade keycloak-httpd-client-install to 0.8 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2017-15111 being exploited?

There is no known exploitation of CVE-2017-15111 in the wild and no public exploit code.

Sources

Also known as GHSA-vqf9-v3hc-wr54, PYSEC-2026-829.

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