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[QSA-0917192] Security Update Bundle

Qlustar Security Advisory 0917192

Sept 17th, 2019


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.


    Package(s)       : see upstream description of individual package
    Qlustar releases : 10.1, 11.0
    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. 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 11.0 only

systemd vulnerability

It was discovered that the systemd-resolved D-Bus interface did not enforce appropriate access controls. A local unprivileged user could exploit this to modify a system’s DNS resolver settings.

MariaDB vulnerabilities

MariaDB has been updated to version 10.1.41 providing fixes for CVE-2019-2737, CVE-2019-2739, CVE-2019-2740, CVE-2019-2805.

In addition to security fixes, the updated package contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information: https://mariadb.com/kb/en/library/mariadb-10141-changelog/ https://mariadb.com/kb/en/library/mariadb-10141-release-notes/

Relevant to Qlustar 11.0 and 10.1

Expat vulnerability

It was discovered that Expat incorrectly handled certain XML files. An attacker could possibly use this issue to expose sensitive information.

curl vulnerabilities

Thomas Vegas discovered that curl incorrectly handled memory when using Kerberos over FTP. A remote attacker could use this issue to crash curl, resulting in a denial of service.

Thomas Vegas discovered that curl incorrectly handled memory during TFTP transfers. A remote attacker could use this issue to crash curl, resulting in a denial of service, or possibly execute arbitrary code.

Python vulnerabilities

It was discovered that Python incorrectly handled certain pickle files. An attacker could possibly use this issue to consume memory, leading to a denial of service.

It was discovered that Python incorrectly validated the domain when handling cookies. An attacker could possibly trick Python into sending cookies to the wrong domain.

Jonathan Birch and Panayiotis Panayiotou discovered that Python incorrectly handled Unicode encoding during NFKC normalization. An attacker could possibly use this issue to obtain sensitive information.

Colin Read and Nicolas Edet discovered that Python incorrectly handled parsing certain X509 certificates. An attacker could possibly use this issue to cause Python to crash, resulting in a denial of service.

It was discovered that Python incorrectly handled certain urls. A remote attacker could possibly use this issue to perform CRLF injection attacks.

Sihoon Lee discovered that Python incorrectly handled the local_file: scheme. A remote attacker could possibly use this issue to bypass blacklist mechanisms.

Apache HTTP Server vulnerabilities

Stefan Eissing discovered that the HTTP/2 implementation in Apache did not properly handle upgrade requests from HTTP/1.1 to HTTP/2 in some situations. A remote attacker could use this to cause a denial of service (daemon crash). This issue only affected Qlustar 11.

Craig Young discovered that a memory overwrite error existed in Apache when performing HTTP/2 very early pushes in some situations. A remote attacker could use this to cause a denial of service (daemon crash). This issue only affected Qlustar 11.

Craig Young discovered that a read-after-free error existed in the HTTP/2 implementation in Apache during connection shutdown. A remote attacker could use this to possibly cause a denial of service (daemon crash) or possibly expose sensitive information. This issue only affected Qlustar 11.

Matei Badanoiu discovered that the mod_proxy component of Apache did not properly filter URLs when reporting errors in some configurations. A remote attacker could possibly use this issue to conduct cross-site scripting (XSS) attacks.

Yukitsugu Sasaki discovered that the mod_rewrite component in Apache was vulnerable to open redirects in some situations. A remote attacker could use this to possibly expose sensitive information or bypass intended restrictions.

Jonathan Looney discovered that the HTTP/2 implementation in Apache did not properly limit the amount of buffering for client connections in some situations. A remote attacker could use this to cause a denial of service (unresponsive daemon). This issue only affected Qlustar 11.

CUPS vulnerabilities

Stephan Zeisberg discovered that the CUPS SNMP backend incorrectly handled encoded ASN.1 inputs. A remote attacker could possibly use this issue to cause CUPS to crash by providing specially crafted network traffic.

It was discovered that CUPS did not properly handle client disconnection events. A local attacker could possibly use this issue to cause a denial of service or disclose memory from the CUPS server.

PHP vulnerabilities

It was discovered that PHP incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

CentOS 7.6 security updates

Please check the CentOS mailing list for details about CentOS 7 updates that entered this release (everything from July 24th to Sept. 17th, 2019).

Update instructions:

The problem can be corrected by updating your system to the following Qlustar package versions in addition to the package versions mentioned in the upstream reports (follow the Qlustar Update Instructions):

For Qlustar 11.0

    qlustar-module-core-bionic-amd64-11.0.0    11.0.0.3-b514f1262
    qlustar-module-core-centos7-amd64-11.0.0   11.0.0.3-b514f1262
  

For Qlustar 10.1

    qlustar-module-core-xenial-amd64-10.1.1    10.1.1.7-b509f1263
  
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