The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems.
An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2017-5715 to this issue.
No Avaya system products are vulnerable, as the affected versions of libvirt are not installed by default.
More information about these vulnerabilities can be found in the security advisory issued by Red Hat:
Avaya uses the Common Vulnerability Scoring System version 3
(CVSSv3) base score and metrics as reported by the vendor for the affected
component(s) or by the National Institute of Standards and Technology in the National Vulnerability Database. In some cases, such as where CVSS information is not available from the vendor or NIST, Avaya will calculate the CVSSv3 base score and metrics. Customers are encouraged to calculate the Temporal and Environmental CVSSv3 scores to determine how the vulnerability could affect their specific implementation or environment. For more information on CVSS and how the score is calculated, see
Common Vulnerability Scoring System v3.0: Specification Document.
| Vulnerability | CVSSv3 Base Score | CVSSv3 Metrics |
|---|---|---|
|
CVE-2017-5715 |
5.6 (Medium) | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |
Avaya software-only products operate on general-purpose operating systems. Occasionally vulnerabilities may be discovered in the underlying operating system or applications that come with the operating system. These vulnerabilities often do not impact the software-only product directly but may threaten the integrity of the underlying platform.
In the case of this advisory Avaya software-only products are not affected by the vulnerability directly but the underlying Linux platform may be. Customers should determine on which Linux operating system the product was installed and then follow that vendor's guidance.
| Product: | Actions: |
|---|---|
| Avaya Aura® Application Enablement Services | Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the AES application. |
| Oceanalytics Elite | Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Oceanalytics Elite application. |
Recommended Actions for Software-Only Products:
In the event that the affected package is installed, Avaya recommends following recommended actions supplied by Red Hat regarding their Enterprise Linux.
Additional information may also be available via the Avaya support website and through your Avaya account representative. Please contact your Avaya product support representative, or dial 1-800-242-2121, with any questions.
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V 1.0 - January 4, 2018 - Initial Statement issued.
V 2.0 - February 13, 2018 - Updated Overall Severity Classification and CVSS information to reflect Red Hat's updated scoring.
Avaya customers or Business Partners should report any security issues found with Avaya products via the standard support process.
Independent security researchers can contact Avaya at
securityalerts@avaya.com.
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