[QSA-0216232] Security Update Bundle

Qlustar Security Advisory 0216232

February 16th, 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 : 11.0, 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, 12.0 and 11.0

Git vulnerabilities

It was discovered that Git incorrectly handled certain repositories. An attacker could use this issue to make Git uses its local clone optimization even when using a non-local transport.

Joern Schneeweisz discovered that Git incorrectly handled certain commands. An attacker could possibly use this issue to overwrite a patch outside the working tree.

X.Org X Server vulnerability

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain memory operations. An attacker could possibly use these issues to cause the X Server to crash, execute arbitrary code, or escalate privileges.

OpenSSL vulnerabilities

David Benjamin discovered that OpenSSL incorrectly handled X.400 address processing. A remote attacker could possibly use this issue to read arbitrary memory contents or cause OpenSSL to crash, resulting in a denial of service.

Corey Bonnell discovered that OpenSSL incorrectly handled X.509 certificate verification. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.

Hubert Kario discovered that OpenSSL had a timing based side channel in the OpenSSL RSA Decryption implementation. A remote attacker could possibly use this issue to recover sensitive information.

Dawei Wang discovered that OpenSSL incorrectly handled parsing certain PEM data. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.

Octavio Galland and Marcel Böhme discovered that OpenSSL incorrectly handled streaming ASN.1 data. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code.

Marc Schönefeld discovered that OpenSSL incorrectly handled malformed PKCS7 data. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.

Kurt Roeckx discovered that OpenSSL incorrectly handled validating certain DSA public keys. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.

Hubert Kario and Dmitry Belyavsky discovered that OpenSSL incorrectly validated certain signatures. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.

tmux vulnerability

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

Apache vulnerabilities

It was discovered that the Apache HTTP Server mod_dav module incorrectly handled certain If: request headers. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service.

ZeddYu_Lu discovered that the Apache HTTP Server mod_proxy_ajp module incorrectly interpreted certain HTTP Requests. A remote attacker could possibly use this issue to perform an HTTP Request Smuggling attack.

Dimas Fariski Setyawan Putra discovered that the Apache HTTP Server mod_proxy module incorrectly truncated certain response headers. This may result in later headers not being interpreted by the client.

PAM vulnerability

It was discovered that PAM did not correctly restrict login from an IP address that is not resolvable via DNS. An attacker could possibly use this issue to bypass authentication.

Samba vulnerabilities

Evgeny Legerov discovered that Samba incorrectly handled buffers in certain GSSAPI routines of Heimdal. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service.

Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos keys. A remote attacker could possibly use this issue to elevate privileges.

It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure Channel. A remote attacker could possibly use this issue to elevate privileges.

Greg Hudson discovered that Samba incorrectly handled PAC parsing. On 32-bit systems, a remote attacker could use this issue to escalate privileges, or possibly execute arbitrary code.

Joseph Sutton discovered that Samba could be forced to issue rc4-hmac encrypted Kerberos tickets. A remote attacker could possibly use this issue to escalate privileges.

PHP vulnerability

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

Sudo vulnerabilities

Matthieu Barjole and Victor Cutillas discovered that Sudo incorrectly handled user-specified editors when using the sudoedit command. A local attacker that has permission to use the sudoedit command could possibly use this issue to edit arbitrary files.

It was discovered that the Protobuf-c library, used by Sudo, incorrectly handled certain arithmetic shifts. An attacker could possibly use this issue to cause Sudo to crash, resulting in a denial of service.

Git vulnerabilities

Markus Vervier and Eric Sesterhenn discovered that Git incorrectly handled certain gitattributes. An attacker could possibly use this issue to cause a crash or execute arbitrary code.

Joern Schneeweisz discovered that Git incorrectly handled certain commands. An attacker could possibly use this issue to cause a crash or execute arbitrary code.

Vim vulnerabilities

It was discovered that Vim makes illegal memory calls when pasting brackets in Ex mode. An attacker could possibly use this to crash Vim, access or modify memory, or execute arbitrary commands.

It was discovered that Vim makes illegal memory calls when making certain retab calls. An attacker could possibly use this to crash Vim, access or modify memory, or execute arbitrary commands.

CentOS 7.9 / AlmaLinux 8.7 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 December 16th 2022 until February 16th 2023).

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       13.0.1-b564f1472
qlustar-module-core-centos8-amd64-13.0     13.0.1-b564f1472

For Qlustar 12.0

qlustar-module-core-focal-amd64-12.0.2     12.0.2.1-b560f1473
qlustar-module-core-centos7-amd64-12.0.2   12.0.2.1-b560f1473

For Qlustar 11.0

qlustar-module-core-bionic-amd64-11.0.1    11.0.1.20-b562f1471

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.

  • 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.