Vulnerability-Lookup

RHSA-2018:2762

Vulnerability from csaf_redhat - Published: 2018-09-25 19:14 - Updated: 2026-06-28 12:31

Summary

Red Hat Security Advisory: qemu-kvm-ma security update

Severity

Important

Notes

Topic: An update for qemu-kvm-ma is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-ma packages provide the user-space component for running virtual machines that use KVM on the IBM z Systems, IBM Power, and 64-bit ARM architectures. Security Fix(es): * QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams (CVE-2018-11806) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Jskz - Zero Day Initiative (trendmicro.com) for reporting this issue.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2018-11806

A heap buffer overflow issue was found in the way SLiRP networking back-end in QEMU processes fragmented packets. It could occur while reassembling the fragmented datagrams of an incoming packet. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or potentially leverage it to execute arbitrary code on the host with privileges of the QEMU process.

5.1 (Medium)


                
                  CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L

CWE-122 - Heap-based Buffer Overflow

Affected products

Fixed 34 products

Product	Version	Remediation
Unresolved product id: 7Server-7.5.Z:qemu-img-ma-10:2.10.0-21.el7_5.4.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-img-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-img-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-common-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-common-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.src	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-ma-debuginfo-10:2.10.0-21.el7_5.4.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-ma-debuginfo-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-ma-debuginfo-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-tools-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-7.5.Z:qemu-kvm-tools-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-img-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-img-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-common-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-common-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.src	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-ma-debuginfo-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-ma-debuginfo-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-tools-ma-10:2.10.0-21.el7_5.4.ppc64le	—	Vendor Fix fix
Unresolved product id: 7Server-Alt-7.5.Z:qemu-kvm-tools-ma-10:2.10.0-21.el7_5.4.s390x	—	Vendor Fix fix
Unresolved product id: 7Server-optional-7.5.Z:qemu-kvm-common-ma-10:2.10.0-21.el7_5.4.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-7.5.Z:qemu-kvm-ma-debuginfo-10:2.10.0-21.el7_5.4.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-7.5.Z:qemu-kvm-tools-ma-10:2.10.0-21.el7_5.4.ppc64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-Alt-7.5.Z:qemu-img-ma-10:2.10.0-21.el7_5.4.aarch64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-Alt-7.5.Z:qemu-kvm-common-ma-10:2.10.0-21.el7_5.4.aarch64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-Alt-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.aarch64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-Alt-7.5.Z:qemu-kvm-ma-10:2.10.0-21.el7_5.4.src	—	Vendor Fix fix
Unresolved product id: 7Server-optional-Alt-7.5.Z:qemu-kvm-ma-debuginfo-10:2.10.0-21.el7_5.4.aarch64	—	Vendor Fix fix
Unresolved product id: 7Server-optional-Alt-7.5.Z:qemu-kvm-tools-ma-10:2.10.0-21.el7_5.4.aarch64	—	Vendor Fix fix

Threats

Impact Important

References

8 references

URL	Category
https://access.redhat.com/errata/RHSA-2018:2762	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1586245	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2018-11806	self
https://bugzilla.redhat.com/show_bug.cgi?id=1586245	external
https://www.cve.org/CVERecord?id=CVE-2018-11806	external
https://nvd.nist.gov/vuln/detail/CVE-2018-11806	external

Acknowledgments

trendmicro.com Jskz - Zero Day Initiative

JSON

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CVE-2018-11806 (GCVE-0-2018-11806)

Vulnerability from cvelistv5 – Published: 2018-06-13 16:00 – Updated: 2024-08-05 08:17

Summary

m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2243 records in the last 180 days details

References

14 references

URL	Tags
https://access.redhat.com/errata/RHSA-2018:2762	vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/104400	vdb-entryx_refsource_BID
https://usn.ubuntu.com/3826-1/	vendor-advisoryx_refsource_UBUNTU
https://lists.gnu.org/archive/html/qemu-devel/201…	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2018/06/07/1	mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=1586245	x_refsource_CONFIRM
https://www.zerodayinitiative.com/advisories/ZDI-…	x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:2462	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:2822	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:2887	vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2019/dsa-4454	vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/May/76	mailing-listx_refsource_BUGTRAQ
https://access.redhat.com/errata/RHSA-2019:2892	vendor-advisoryx_refsource_REDHAT

Date Public

2018-06-05 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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