CVE-2017-15118

Impact:
Important
Public Date:
2017-11-28
CWE:
CWE-121
Bugzilla:
1516922: CVE-2017-15118 Qemu: stack buffer overflow in NBD server triggered via long export name
A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, allowing causing an out-of-bounds stack write in the qemu process. If NBD server requires TLS, the attacker cannot trigger the buffer overflow without first successfully negotiating TLS.

Find out more about CVE-2017-15118 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 7.5
Base Metrics AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial

CVSS v3 metrics

CVSS3 Base Score 8.3
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Low
Integrity Impact Low
Availability Impact Low

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat OpenStack Platform 12.0 (qemu-kvm-rhev) RHSA-2018:1113 2018-04-11
Red Hat OpenStack Platform 11.0 (Ocata) (qemu-kvm-rhev) RHSA-2018:1113 2018-04-11
Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts (qemu-kvm-rhev) RHSA-2018:1104 2018-04-10
Red Hat OpenStack Platform 9.0 (qemu-kvm-rhev) RHSA-2018:1113 2018-04-11
Red Hat OpenStack Platform 8.0 (Liberty) (qemu-kvm-rhev) RHSA-2018:1113 2018-04-11
Red Hat OpenStack Platform 10 (qemu-kvm-rhev) RHSA-2018:1113 2018-04-11

Affected Packages State

Platform Package State
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 7 qemu-kvm Not affected
Red Hat Enterprise Linux 7 qemu-kvm-ma Affected
Red Hat Enterprise Linux 6 qemu-kvm Not affected
Red Hat Enterprise Linux 6 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 5 kvm Not affected
Red Hat Enterprise Linux 5 xen Not affected

Acknowledgements

This issue was discovered by Eric Blake (Red Hat).

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