Vulnerability-Lookup

OPENSUSE-SU-2021:3604-1

Vulnerability from csaf_opensuse - Published: 2021-11-03 13:59 - Updated: 2021-11-03 13:59

Summary

Security update for qemu

Severity

Important

Notes

Title of the patch: Security update for qemu

Description of the patch: This update for qemu fixes the following issues: Security issues fixed: - CVE-2021-3713: Fix out-of-bounds write in UAS (USB Attached SCSI) device emulation (bsc#1189702) - CVE-2021-3748: Fix heap use-after-free in virtio_net_receive_rcu (bsc#1189938) Non-security issues fixed: - Add transfer length item in block limits page of scsi vpd (bsc#1190425) - Fix qemu crash while deleting xen-block (bsc#1189234)

Patchnames: openSUSE-SLE-15.3-2021-3604

CVE-2021-3713

7.8 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 15.3:qemu-s390-4.2.1-11.31.3.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.3:qemu-s390-4.2.1-11.31.3.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.3:qemu-s390-4.2.1-11.31.3.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 15.3:qemu-s390-4.2.1-11.31.3.x86_64	—	Vendor Fix

Threats

Impact important

CVE-2021-3748

6.7 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 4 products, the same list as for CVE-2021-3713

Threats

Impact moderate

References

14 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://lists.opensuse.org/archives/list/security…	self
https://lists.opensuse.org/archives/list/security…	self
https://bugzilla.suse.com/1189234	self
https://bugzilla.suse.com/1189702	self
https://bugzilla.suse.com/1189938	self
https://bugzilla.suse.com/1190425	self
https://www.suse.com/security/cve/CVE-2021-3713/	self
https://www.suse.com/security/cve/CVE-2021-3748/	self
https://www.suse.com/security/cve/CVE-2021-3713	external
https://bugzilla.suse.com/1189702	external
https://www.suse.com/security/cve/CVE-2021-3748	external
https://bugzilla.suse.com/1189938	external

JSON

To clipboard

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CVE-2021-3713 (GCVE-0-2021-3713)

Vulnerability from cvelistv5 – Published: 2021-08-25 18:40 – Updated: 2024-08-03 17:01

Summary

An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.

Severity

No CVSS data available.

CWE

CWE-787

Assigner

redhat redhat root

References

6 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1994640	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://security.netapp.com/advisory/ntap-2021092…	x_refsource_CONFIRM
https://www.debian.org/security/2021/dsa-4980	vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/202208-27	vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
n/a	QEMU	Affected: qemu 6.2.0-rc0

Show details on NVD website

JSON

To clipboard

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CVE-2021-3748 (GCVE-0-2021-3748)

Vulnerability from cvelistv5 – Published: 2022-03-23 19:46 – Updated: 2024-08-03 17:09

Summary

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.

Severity

No CVSS data available.

CWE

CWE-416 - - Use After Free

Assigner

redhat redhat root

References

8 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1998514	x_refsource_MISC
https://ubuntu.com/security/CVE-2021-3748	x_refsource_MISC
https://github.com/qemu/qemu/commit/bedd7e93d0196…	x_refsource_MISC
https://lists.nongnu.org/archive/html/qemu-devel/…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST
https://security.netapp.com/advisory/ntap-2022042…	x_refsource_CONFIRM
https://security.gentoo.org/glsa/202208-27	vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
n/a	QEMU (virtio-net)	Affected: Affects qemu v0.10.0 and above, Fixed In – v6.2.0-rc0 and above.

Show details on NVD website

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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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

OPENSUSE-SU-2021:3604-1

CVE-2021-3713 (GCVE-0-2021-3713)

CVE-2021-3748 (GCVE-0-2021-3748)

Tags

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Nomenclature

Related by attack behaviour