CVE-2013-4361
UnknownEPSS 0.40%
Last modified
CVE-2013-4361 is a vulnerability of currently unknown severity. The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | 3.3.0 |
| Xen | Xen | 3.3.1 |
| Xen | Xen | 3.3.2 |
| Xen | Xen | 3.4.0 |
| Xen | Xen | 3.4.1 |
| Xen | Xen | 3.4.2 |
| Xen | Xen | 3.4.3 |
| Xen | Xen | 3.4.4 |
| Xen | Xen | 4.0.0 |
| Xen | Xen | 4.0.1 |
| Xen | Xen | 4.0.2 |
| Xen | Xen | 4.0.3 |
| Xen | Xen | 4.0.4 |
| Xen | Xen | 4.1.0 |
| Xen | Xen | 4.1.1 |
| Xen | Xen | 4.1.2 |
| Xen | Xen | 4.1.3 |
| Xen | Xen | 4.1.4 |
| Xen | Xen | 4.1.5 |
| Xen | Xen | 4.2.0 |
| Xen | Xen | 4.2.1 |
| Xen | Xen | 4.2.2 |
| Xen | Xen | 4.3.0 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2013-4361?
The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction.
How severe is CVE-2013-4361?
Severity scoring for CVE-2013-4361 is pending analysis. The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.
How do I fix CVE-2013-4361?
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 2013
- CVE-2013-4355Xen 4.3.x and earlier does not properly handle certain error…
- CVE-2013-4356Xen 4.3.x writes hypervisor mappings to certain shadow paget…
- CVE-2013-4357The eglibc package before 2.14 incorrectly handled the getad…7.5
- CVE-2013-4358libavcodec/h264.c in FFmpeg before 0.11.4 allows remote atta…
- CVE-2013-4359Integer overflow in kbdint.c in mod_sftp in ProFTPD 1.3.4d a…
- CVE-2013-4360Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultI…
- CVE-2013-4362WEB-DAV Linux File System (davfs2) 1.4.6 and 1.4.7 allow loc…
- CVE-2013-4363Algorithmic complexity vulnerability in Gem::Version::ANCHOR…
- CVE-2013-4364(1) oo-analytics-export and (2) oo-analytics-import in the o…
- CVE-2013-4365Heap-based buffer overflow in the fcgid_header_bucket_read f…
- CVE-2013-4366http/impl/client/HttpClientBuilder.java in Apache HttpClient…9.8
- CVE-2013-4367ovirt-engine 3.2 running on Linux kernel 3.1 and newer creat…7.8
Are you affected by CVE-2013-4361?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST