CVE-2015-5165
Description
An information leak flaw was found in the way QEMU's RTL8139 emulation implementation processed network packets under RTL8139 controller's C+ mode of operation. An unprivileged guest user could use this flaw to read up to 65 KB of uninitialized QEMU heap memory.
Statement
This issue affects the versions of kvm and xen packages as shipped with Red Hat Enterprise Linux 5.
This issue affects the versions of the qemu-kvm packages as shipped with Red Hat Enterprise Linux 6 and 7.
This issue affects the Red Hat Enterprise Linux 6 based versions of qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.
This issue affects the Red Hat Enterprise Linux 7 based versions of the qemu-kvm-rhev packages as shipped with Red Hat Enterprise Virtualization 3.
Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 3.3 | 9.3 | N/A |
| Attack Vector | Adjacent Network | Network | N/A |
| Access Complexity | Low | Medium | N/A |
| Authentication | None | None | N/A |
| Confidentiality Impact | Partial | Complete | N/A |
| Integrity Impact | None | Complete | N/A |
| Availability Impact | None | Complete | N/A |
Vector
Red Hat: AV:A/AC:L/Au:N/C:P/I:N/A:N
NVD: AV:N/AC:M/Au:N/C:C/I:C/A:C
Understanding the Weakness (CWE)
Integrity,Other
Technical Impact: Unexpected State; Quality Degradation; Varies by Context
The uninitialized data may be invalid, causing logic errors within the program. In some cases, this could result in a security problem.
Acknowledgements
Red Hat would like to thank Xen project for reporting this issue. Upstream acknowledges Donghai Zhu (Alibaba) as the original reporter.
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