CVE-2017-2620
MEDIUMCVSS 5.5/10EPSS 3.49%
Last modified
CVE-2017-2620 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. EPSS estimates a 3.49% chance of exploitation in the next 30 days.
Description
Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
Metrics
CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Qemu | Qemu | < 2.8.0 | — |
| Citrix | Xenserver | 6.0.2 | — |
| Citrix | Xenserver | 6.2.0 | Sp1 |
| Citrix | Xenserver | 6.5 | Sp1 |
| Citrix | Xenserver | 7.0 | — |
| Citrix | Xenserver | 7.1 | — |
| Redhat | Openstack | 5.0 | — |
| Redhat | Openstack | 6.0 | — |
| Redhat | Openstack | 7.0 | — |
| Redhat | Openstack | 8 | — |
| Redhat | Openstack | 9 | — |
| Redhat | Openstack | 10 | — |
| Debian | Debian Linux | 7.0 | — |
| Redhat | Enterprise Linux Desktop | 6.0 | — |
| Redhat | Enterprise Linux Desktop | 7.0 | — |
| Redhat | Enterprise Linux Server | 6.0 | — |
| Redhat | Enterprise Linux Server | 7.0 | — |
| Redhat | Enterprise Linux Server Aus | 7.3 | — |
| Redhat | Enterprise Linux Server Aus | 7.4 | — |
| Redhat | Enterprise Linux Server Eus | 7.3 | — |
| Redhat | Enterprise Linux Server Eus | 7.4 | — |
| Redhat | Enterprise Linux Server Eus | 7.5 | — |
| Redhat | Enterprise Linux Workstation | 6.0 | — |
| Redhat | Enterprise Linux Workstation | 7.0 | — |
| Xen | Xen | <= 4.7.1 | — |
| Xen | Xen | 4.7.1 | R1 |
References
- http://rhn.redhat.com/errata/RHSA-2017-0328.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0329.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0330.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0331.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0332.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0333.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0334.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0350.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0351.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0352.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0396.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0454.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2017/02/21/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/96378Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037870Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2620Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/02/msg00005.htmlThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.htmlPatch, Third Party Advisory
- https://security.gentoo.org/glsa/201703-07Third Party Advisory
- https://security.gentoo.org/glsa/201704-01Third Party Advisory
- https://support.citrix.com/article/CTX220771Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-209.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0328.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0329.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0330.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0331.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0332.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0333.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0334.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0350.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0351.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0352.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0396.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0454.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2017/02/21/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/96378Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037870Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2620Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/02/msg00005.htmlThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.htmlPatch, Third Party Advisory
- https://security.gentoo.org/glsa/201703-07Third Party Advisory
- https://security.gentoo.org/glsa/201704-01Third Party Advisory
- https://support.citrix.com/article/CTX220771Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-209.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-2620?
Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
How severe is CVE-2017-2620?
CVE-2017-2620 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 3.49% probability of exploitation in the next 30 days.
How do I fix CVE-2017-2620?
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.
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