CVE-2016-0749
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Description
A memory allocation flaw, leading to a heap-based buffer overflow, was found in spice's smartcard interaction, which runs under the QEMU-KVM context on the host. A user connecting to a guest VM using spice could potentially use this flaw to crash the QEMU-KVM process or execute arbitrary code with the privileges of the host's QEMU-KVM process.
Additional information
- Bugzilla 1300646: spice: heap-based memory corruption within smartcard handling
- CWE-131->CWE-122: Incorrect Calculation of Buffer Size leads to Heap-based Buffer Overflow
- FAQ: Frequently asked questions about CVE-2016-0749
Common Vulnerability Scoring System (CVSS) Score Details
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).
Red Hat | NVD | |
---|---|---|
CVSS v2 Base Score | 6.8 | 10 |
Attack Vector | Network | Network |
Access Complexity | Medium | Low |
Authentication | None | None |
Confidentiality Impact | Partial | Complete |
Integrity Impact | Partial | Complete |
Availability Impact | Partial | Complete |
CVSS v2 Vector
Red Hat: AV:N/AC:M/Au:N/C:P/I:P/A:P
NVD: AV:N/AC:L/Au:N/C:C/I:C/A:C
Acknowledgements
This issue was discovered by Jing Zhao (Red Hat).
Frequently Asked Questions
Why is Red Hat's CVSS v3 score or Impact different from other vendors?
My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?
What can I do if my product is listed as "Will not fix"?
What can I do if my product is listed as "Fix deferred"?
What is a mitigation?
I have a Red Hat product but it is not in the above list, is it affected?
Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?
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