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Debian 8: DLA-1399-1 Moderate: Ruby-Passenger HTTP Exploits Fix

Two flaws were discovered in ruby-passenger for Ruby Rails and Rack support that allowed attackers to spoof HTTP headers or exploit a race condition which made privilege escalation under certain conditions possible. . Package : ruby-passenger Version : 4.0.53-1+deb8u1 CVE ID : CVE-2015-7519 CVE-2018-12029 Debian Bug : 864651 Two flaws were discovered in ruby-passenger for Ruby Rails and Rack support that allowed attackers to spoof HTTP headers or exploit a race condition which made privilege escalation under certain conditions possible. CVE-2015-7519 Remote attackers could spoof headers passed to applications by using an underscore character instead of a dash character in an HTTP header as demonstrated by an X_User header. CVE-2018-12029 A vulnerability was discovered by the Pulse Security team. It was exploitable only when running a non-standard passenger_instance_registry_dir, via a race condition where after a file was created, there was a window in which it could be replaced with a symlink before it was chowned via the path and not the file descriptor. If the symlink target was to a file which would be executed by root such as root's crontab file, then privilege escalation was possible. This is now mitigated by using fchown(). For Debian 8 "Jessie", these problems have been fixed in version 4.0.53-1+deb8u1. We recommend that you upgrade your ruby-passenger packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS . Recent vulnerabilities in ruby-passenger reveal risks of HTTP header spoofing and unauthorized privilege escalation, making immediate updates crucial for security.. ruby passenger security,debian package update,http header exploits. . LinuxSecurity.com Team

Jun 27, 2018 Debian LTS