[QSA-0629242] Security Update Bundle

Qlustar Security Advisory 0629242

June 29th, 2024

Summary:

A Qlustar security update bundle is a cumulative update of packages that are taken from upstream Debian/Ubuntu without modification. Only packages that are used in a typical HPC/Storage cluster installation are mentioned in Qlustar Security Advisories. Other non-HPC related updates also enter the Qlustar repository, but their functionality is not separately verified by the Qlustar team. To track these updates subscribe to the general security mailing lists of Debian/Ubuntu and/or CentOS/AlmaLinux.

Package(s)       : see upstream description of individual package
Qlustar releases : 12.0, 13
Affected versions: All versions prior to this update
Vulnerability    : see upstream description of individual package
Problem type     : see upstream description of individual package
Qlustar-specific : no
CVE Id(s)        : see upstream description of individual package

This update includes several security related package updates from Debian/Ubuntu and CentOS/AlmaLinux. The following list provides references to the upstream security report of the corresponding packages. You can view the original upstream advisory by clicking on the corresponding title.

Relevant to Qlustar 13 and 12.0

OpenSSL vulnerability

It was discovered that OpenSSL failed to choose an appropriately short private key size when computing shared-secrets in the Diffie-Hellman Key Agreement Protocol. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, resulting in a denial of service.

Wget vulnerability

It was discovered that Wget incorrectly handled semicolons in the userinfo subcomponent of a URI. A remote attacker could possibly trick a user into connecting to a different host than expected.

CUPS vulnerability

Rory McNamara discovered that when starting the cupsd server with a Listen configuration item, the cupsd process fails to validate if bind call passed. An attacker could possibly trick cupsd to perform an arbitrary chmod of the provided argument, providing world-writable access to the target.

PHP vulnerability

It was discovered that PHP could early return in the filter_var function resulting in invalid user information being treated as valid user information. An attacker could possibly use this issue to expose raw user input information.

MariaDB vulnerability

A security issue was discovered in MariaDB and this update includes new upstream MariaDB versions to fix the issue.

MariaDB has been updated to 10.6.18 in Qlustar 13. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

SSSD vulnerability

It was discovered that SSSD did not always correctly apply the GPO policy for authenticated users, contrary to expectations. This could result in improper authorization or improper access to resources.

libarchive vulnerability

It was discovered that libarchive incorrectly handled certain RAR archive files. An attacker could possibly use this issue to execute arbitrary code or cause a crash.

Git vulnerabilities

It was discovered that Git incorrectly handled certain submodules. An attacker could possibly use this issue to execute arbitrary code.

It was discovered that Git incorrectly handled certain cloned repositories. An attacker could possibly use this issue to execute arbitrary code.

It was discovered that Git incorrectly handled local clones with hardlinked files/directories. An attacker could possibly use this issue to place a specialized repository on their target’s local system.

It was discovered that Git incorrectly handled certain symlinks. An attacker could possibly use this issue to impact availability and integrity creating hardlinked arbitrary files into users repository’s objects/directory.

It was discovered that Git incorrectly handled certain cloned repositories. An attacker could possibly use this issue to execute arbitrary code.

PHP vulnerabilities

It was discovered that PHP incorrectly handled PHP_CLI_SERVER_WORKERS variable. An attacker could possibly use this issue to cause a crash or execute arbitrary code.

It was discovered that PHP incorrectly handled certain cookies. An attacker could possibly use this issue to cookie by pass.

It was discovered that PHP incorrectly handled some passwords. An attacker could possibly use this issue to cause an account takeover attack.

less vulnerability

It was discovered that less mishandled newline characters in file names. If a user or automated system were tricked into opening specially crafted files, an attacker could possibly use this issue to execute arbitrary commands on the host.

GNU cpio vulnerability

Ingo Brückl discovered that cpio contained a path traversal vulnerability. If a user or automated system were tricked into extracting a specially crafted cpio archive, an attacker could possibly use this issue to write arbitrary files outside the target directory on the host, even if using the option –no-absolute-filenames. Note that the corrected cpio package version on Qlustar 13 is 2.15+dfsg-1.ql.1.

CentOS 7.9 / AlmaLinux 8.10 security updates

Please check the CentOS mailing list for details about CentOS 7 updates and the AlmaLinux Errata site for details about AlmaLinux 8 updates that entered this release (everything from April 22nd until June 25th).

Update instructions:

The problem can be corrected by updating your system to the following or more recent package versions:

For Qlustar 13

qlustar-module-core-jammy-amd64-13.2       13.2.0-b569f1542
qlustar-module-core-centos8-amd64-13.2     13.2.0-b569f1542

For Qlustar 12.0

qlustar-module-core-focal-amd64-12.0.3     12.0.3.6-b566f1541
qlustar-module-core-centos7-amd64-12.0.3   12.0.3.6-b566f1541

Special Update instructions:

In addition to the steps described in the general Qlustar Update Instructions these updates require the following:

  • On Qlustar 12, also perform the following manual steps if you haven’t done so yet: Write the dnsmasq and slurm config with QluMan before rebooting. If your cluster was installed with a release earlier than 12.0.0.8-b546f1425 you will have to generate new LDAP certificates at some point since the earlier ones were generated with a 1 year validity. Now they are generated with an unlimited validity. To check the expiration date execute 
    # openssl x509 -dates -in /etc/ssl/certs/qlustar-ca-cert.pem | grep notAfter

    To regenerate the certificate with unlimited validity execute

    # qluman-ldap-cli --update-certs

    before rebooting the whole cluster.
    Please note that we no longer provide 12.x AlmaLinux 8 modules for Qlustar 12. If you want to use AlmaLinux 8 under Qlustar 12, please switch to the 13.x image modules and create a corresponding chroot for it.