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
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
- https://rhn.redhat.com/errata/RHSA-2017-0328.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0329.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0330.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0331.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0332.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0333.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0334.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0350.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0351.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0352.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0396.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0454.htmlThird Party Advisory
- https://www.openwall.com/lists/oss-security/2017/02/21/1Mailing List, Third Party Advisory
- https://www.securityfocus.com/bid/96378Third Party Advisory, VDB Entry
- https://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
- https://rhn.redhat.com/errata/RHSA-2017-0328.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0329.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0330.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0331.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0332.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0333.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0334.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0350.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0351.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0352.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0396.htmlThird Party Advisory
- https://rhn.redhat.com/errata/RHSA-2017-0454.htmlThird Party Advisory
- https://www.openwall.com/lists/oss-security/2017/02/21/1Mailing List, Third Party Advisory
- https://www.securityfocus.com/bid/96378Third Party Advisory, VDB Entry
- https://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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