kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service

A flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).

kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg()

Linux kernel vhost since version 4.8 does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file.

ovirt-ansible-roles: passwords revealed in ansible log when provisioning new provider

ovirt-ansible-roles before version 1.0.6 has a vulnerability due to a missing no_log directive, resulting in the 'Add oVirt Provider to ManageIQ/CloudForms' playbook inadvertently disclosing admin passwords in the provisioning log. In an environment where logs are shared with other parties, this could lead to privilege escalation.

polkit: Improper authorization in polkit_backend_interactive_authority_check_authorization function in polkitd

A flaw was found in polkit before version 0.116. The implementation of the polkit_backend_interactive_authority_check_authorization function in polkitd allows to test for authentication and trigger authentication of unrelated processes owned by other users. This may result in a local DoS and information disclosure.

undertow: File descriptor leak caused by JarURLConnection.getLastModified() allows attacker to cause a denial of service

It was found that URLResource.getLastModified() in Undertow closes the file descriptors only when they are finalized which can cause file descriptors to exhaust. This leads to a file handler leak.

setup: nologin listed in /etc/shells violates security expectations

setup before version 2.11.4-1.fc28 in Fedora and Red Hat Enterprise Linux added /sbin/nologin and /usr/sbin/nologin to /etc/shells. This violates security assumptions made by pam_shells and some daemons which allow access based on a user's shell being listed in /etc/shells. Under some circumstances, users which had their shell changed to /sbin/nologin could still access the system.

glusterfs: auth.allow allows unauthenticated clients to mount gluster volumes (CVE-2018-1088 regression)

glusterfs server before versions 3.10.12, 4.0.2 is vulnerable when using 'auth.allow' option which allows any unauthenticated gluster client to connect from any network to mount gluster storage volumes. NOTE: this vulnerability exists because of a CVE-2018-1088 regression.

dhcp: Command injection vulnerability in the DHCP client NetworkManager integration script

DHCP packages in Red Hat Enterprise Linux 6 and 7, Fedora 28, and earlier are vulnerable to a command injection flaw in the NetworkManager integration script included in the DHCP client. A malicious DHCP server, or an attacker on the local network able to spoof DHCP responses, could use this flaw to execute arbitrary commands with root privileges on systems using NetworkManager and configured to obtain network configuration using the DHCP protocol.

A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.

kernel: drivers: getrandom(2) unblocks too early after system boot

kernel drivers before version 4.17-rc1 are vulnerable to a weakness in the Linux kernel's implementation of random seed data. Programs, early in the boot sequence, could use the data allocated for the seed before it was sufficiently generated.

nodejs-is-my-json-valid: ReDoS when validating JSON fields with email format

It was discovered that the is-my-json-valid JavaScript library used an inefficient regular expression to validate JSON fields defined to have email format. A specially crafted JSON file could cause it to consume an excessive amount of CPU time when validated.

PackageKit: authentication bypass allows to install signed packages without administrator privileges

An authentication bypass flaw has been found in PackageKit before 1.1.10 that allows users without administrator privileges to install signed packages. A local attacker can use this vulnerability to install vulnerable packages to further compromise a system.

ansible-tower: Remote code execution by users with access to define variables in job templates

Ansible Tower through version 3.2.3 has a vulnerability that allows users only with access to define variables for a job template to execute arbitrary code on the Tower server.

source-to-image: Unsanitized paths in tar.go:ExtractTarStreamFromTarReader() allow malicious containers to overwrite files on the client machine

Openshift Enterprise source-to-image before version 1.1.10 is vulnerable to an improper validation of user input. An attacker who could trick a user into using the command to copy files locally, from a pod, could override files outside of the target directory of the command.

source-to-image: Improper path sanitization in ExtractTarStreamFromTarReader in tar/tar.go

A flaw was found in source-to-image function as shipped with Openshift Enterprise 3.x. An improper path validation of tar files in ExtractTarStreamFromTarReader in tar/tar.go leads to privilege escalation.

ansible-tower: Privilege escalation flaw allows for organization admins to obtain system privileges

Ansible Tower before version 3.2.4 has a flaw in the management of system and organization administrators that allows for privilege escalation. System administrators that are members of organizations can have their passwords reset by organization administrators, allowing organization administrators access to the entire system.

zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution

zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath function. A local attacker could exploit this to execute arbitrary code in the context of another user.

etcd: DNS rebinding vulnerability in etcd server

DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address).

etcd: Cross-site request forgery via crafted local POST forms

A cross-site request forgery flaw was found in etcd 3.3.1 and earlier. An attacker can set up a website that tries to send a POST request to the etcd server and modify a key. Adding a key is done with PUT so it is theoretically safe (can't PUT from an HTML form or such) but POST allows creating in-order keys that an attacker can send.

foreman: Ovirt admin password exposed by foreman API

A flaw was found in foreman before 1.16.1. The issue allows users with limited permissions for powering oVirt/RHV hosts on and off to discover the username and password used to connect to the compute resource.