CVE-2020-35517
HIGHCVSS 8.2/10EPSS 0.52%
Last modified
CVE-2020-35517 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
Description
A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | >= 5.0.0, <= 5.2.50 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1915823Issue Tracking, Patch, Third Party Advisory
- https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2cPatch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.htmlExploit, Mailing List, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202208-27Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210312-0002/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/01/22/1Exploit, Mailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1915823Issue Tracking, Patch, Third Party Advisory
- https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2cPatch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.htmlExploit, Mailing List, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202208-27Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210312-0002/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/01/22/1Exploit, Mailing List, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-35517?
A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.
How severe is CVE-2020-35517?
CVE-2020-35517 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2020-35517?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
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- CVE-2020-35512A use-after-free flaw was found in D-Bus Development branch …7.8
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- CVE-2020-35515Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-35516Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-35518When binding against a DN during authentication, the reply f…5.3
- CVE-2020-35519An out-of-bounds (OOB) memory access flaw was found in x25_b…7.8
- CVE-2020-3552A vulnerability in the Ethernet packet handling of Cisco Air…7.4
- CVE-2020-35520Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-35521A flaw was found in libtiff. Due to a memory allocation fail…5.5
- CVE-2020-35522In LibTIFF, there is a memory malloc failure in tif_pixarlog…5.5
Are you affected by CVE-2020-35517?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST