[QSA-0726232] Security Update Bundle

Qlustar Security Advisory 0726232

July 26th, 2023

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

OpenSSH vulnerability

It was discovered that OpenSSH incorrectly handled loading certain PKCS#11 providers. If a user forwarded their ssh-agent to an untrusted system, a remote attacker could possibly use this issue to load arbitrary libraries from the user’s system and execute arbitrary code.

Samba vulnerabilities

It was discovered that Samba incorrectly handled Winbind NTLM authentication responses. An attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service.

Florent Saudel and Arnaud Gatignolof discovered that Samba incorrectly handled certain Spotlight requests. A remote attacker could possibly use this issue to cause Samba to consume resources, leading to a denial of service.

Ralph Boehme and Stefan Metzmacher discovered that Samba incorrectly handled paths returned by Spotlight requests. A remote attacker could possibly use this issue to obtain sensitive information.

curl vulnerabilities

Hiroki Kurosawa discovered that curl incorrectly handled validating certain certificate wildcards. A remote attacker could possibly use this issue to spoof certain website certificates using IDN hosts.

Hiroki Kurosawa discovered that curl incorrectly handled callbacks when certain options are set by applications. This could cause applications using curl to misbehave, resulting in information disclosure, or a denial of service.

PHP vulnerability

t was discovered that PHP incorrectly handled certain Digest authentication for SOAP. An attacker could possibly use this issue to expose sensitive information.

Vim vulnerabilities

It was discovered that Vim contained an out-of-bounds read vulnerability. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

It was discovered that Vim did not properly manage memory when freeing allocated memory. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

It was discovered that Vim contained a heap-based buffer overflow vulnerability. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

It was discovered that Vim did not properly manage memory when recording and using select mode. An attacker could possibly use this issue to cause a denial of service.

It was discovered that Vim incorrectly handled certain memory operations during a visual block yank. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

It was discovered that Vim contained a NULL pointer dereference vulnerability when switching tabpages. An attacker could possible use this issue to cause a denial of service.

CentOS 7.9 / AlmaLinux 8.8 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 June 29th 2023 until July 26th).

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-amd64-13.0       13.0.6-b565f1499
qlustar-module-core-centos8-amd64-13.0     13.0.6-b565f1499

For Qlustar 12.0

qlustar-module-core-focal-amd64-12.0.2     12.0.2.6-b566f1500

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.