CVE-2018-7225
UnknownEPSS 6.45%
Last modified
CVE-2018-7225 is a vulnerability of currently unknown severity. An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.. EPSS estimates a 6.45% chance of exploitation in the next 30 days.
Description
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libvncserver Project | Libvncserver | <= 0.9.11 |
| Debian | Debian Linux | 7.0 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 17.10 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.5 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 7.0 |
References
- http://www.openwall.com/lists/oss-security/2018/02/18/1Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/103107Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1055Third Party Advisory
- https://github.com/LibVNC/libvncserver/issues/218Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00035.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3618-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4221Third Party Advisory
- http://www.openwall.com/lists/oss-security/2018/02/18/1Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/103107Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1055Third Party Advisory
- https://github.com/LibVNC/libvncserver/issues/218Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00035.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3618-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4221Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-7225?
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
How severe is CVE-2018-7225?
Severity scoring for CVE-2018-7225 is pending analysis. The EPSS model estimates a 6.45% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7225?
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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Are you affected by CVE-2018-7225?
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