Package Instance

Phusion Passenger denial of service
The http parser in Phusion Passenger 6.0.21 through 6.0.25 before 6.0.26 allows a denial of service during parsing of a request with an invalid HTTP method.

Information Exposure
Given a Passenger-spawned application process that reports that it listens on a certain Unix domain socket, if any of the parent directories of said socket are writable by a normal user that is not the application's user, then that non-application user can swap that directory with something else, resulting in traffic being redirected to a non-application user's process through an alternative Unix domain socket.

Improper Link Resolution Before File Access
During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.

Server Instance Directory Creation Local Symlink File Overwrite
This package contains a flaw as the program creates the server instance directory insecurely. It is possible for a local attacker to use a symlink attack against the directory to cause the program to unexpectedly overwrite an arbitrary file.

Multiple vulnerabilities in Asterisk might allow remote attackers to cause
    a Denial of Service condition, or conduct other attacks.

Incorrect Permission Assignment for Critical Resource
An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.

Incorrect Permission Assignment for Critical Resource
An issue was discovered in Phusion Passenger. The set of groups (gidset) is not set correctly, leaving it up to randomness (i.e., uninitialized memory) which supplementary groups are actually being set while lowering privileges.