[QSA-0808222] Security Update Bundle

Qlustar Security Advisory 0808222

August 8th, 2022

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 : 11.0, 12.0
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 12.0 and 11.0

GnuTLS vulnerabilities

It was discovered that GnuTLS incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service.

It was discovered that GnuTLS incorrectly handled the verification of certain pkcs7 signatures. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code.

Samba vulnerabilities

It was discovered that Samba did not handle MaxQueryDuration when being used in AD DC configurations, contrary to expectations.

Luke Howard discovered that Samba incorrectly handled certain restrictions associated with changing passwords. A remote attacker being requested to change passwords could possibly use this issue to escalate privileges.

Luca Moro discovered that Samba incorrectly handled certain SMB1 communications. A remote attacker could possibly use this issue to obtain sensitive memory contents.

Joseph Sutton discovered that Samba incorrectly handled certain password change requests. A remote attacker could use this issue to change passwords of other users, resulting in privilege escalation.

Joseph Sutton discovered that Samba incorrectly handled certain LDAP add or modify requests. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service.

Joseph Sutton and Andrew Bartlett discovered that Samba incorrectly handled certain LDAP add or modify requests. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service.

libtirpc vulnerability

It was discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service.

protobuf-c vulnerability

Pietro Borrello discovered that protobuf-c contained an invalid arithmetic shift. This vulnerability allowed attackers to cause a denial of service (system crash) via unspecified vectors.

It was discovered that protobuf-c contained an unsigned integer overflow. This vulnerability allowed attackers to cause a denial of service (system crash) via unspecified vectors.

Todd Miller discovered that protobuf-c contained a possible NULL dereference. This could cause a vulnerability that allowed attackers to cause a denial of service (system crash) via unspecified vectors.

Python vulnerability

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

Git vulnerabilities

Carlo Marcelo Arenas Belón discovered that an issue related to CVE-2022-24765 still affected Git. An attacker could possibly use this issue to run arbitrary commands as administrator.

X.Org X Server vulnerabilities

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain inputs. An attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code and escalate privileges.

NSS vulnerabilities

Tavis Ormandy discovered that NSS incorrectly handled an empty pkcs7 sequence. A remote attacker could possibly use this issue to cause NSS to crash, resulting in a denial of service.

Ronald Crane discovered that NSS incorrectly handled certain memory operations. A remote attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code.

CentOS 7.9 / AlmaLinux 8.6 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 23rd, 2022 to August 5th 2022).

Update instructions:

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

For Qlustar 12.0

qlustar-module-core-focal-amd64-12.0.1     12.0.1.0-b548f1441
qlustar-module-core-centos7-amd64-12.0.1   12.0.1.0-b548f1441
qlustar-module-core-centos8-amd64-12.0.1   12.0.1.0-b548f1441

For Qlustar 11.0

qlustar-module-core-bionic-amd64-11.0.1    11.0.1.17-b549f1440

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.
On Qlustar 11: Also perform the manual steps ‘7. Migration to GRUB PXE booting’ and ‘11. Adjust root bash shell initialization’ as described in the Release Notes if you haven’t done so yet.