CVE & CISA-KEV Catalog

CVE-2016-9602

HIGHEPSS 89th pctl
7.6
CVSS v3
NVD

Description

Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.

How to fix

Remediation Available
qemuDebian
Fixed in:1:2.8+dfsg-3CVE-2016-9602
Fixed in:1:2.8+dfsg-3CVE-2016-9602
Fixed in:1:2.8+dfsg-3CVE-2016-9602
Fixed in:1:2.8+dfsg-3CVE-2016-9602
qemuUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-systemUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-aarch64Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-armUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-mipsUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-miscUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-ppcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-s390xUbuntu
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-sparcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1
qemu-system-x86Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.33USN-3261-1
Fixed in:1:2.5+dfsg-5ubuntu10.11USN-3261-1

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeChanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

3.79%probability of exploitation in 30 days
89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Related Vulnerabilities

Other CWE-59 (Link Following) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2022-30333High7.599%KEV + RansomFix
CVE-2021-21300High8.089%-Fix
CVE-2021-32610High7.173%-Fix
CVE-2020-36193High7.571%KEVFix
CVE-2023-40028Medium4.969%-Fix
CVE-2023-36874High7.843%KEVFix

Common questions

How do I fix CVE-2016-9602?

Published advisories record a fix for 11 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2016-9602 being actively exploited?

Not that we know of. CVE-2016-9602 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 3.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 89% of all scored CVEs.

How severe is CVE-2016-9602?

CVE-2016-9602 has a CVSS v3 base score of 7.6, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2016-9602 affect?

Published advisories record a fix for qemu (Debian), qemu (Ubuntu), qemu-system (Ubuntu), qemu-system-aarch64 (Ubuntu), and 7 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.