Vulnerability Description
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p4, 11.0-RELEASE-p15, 10.4-STABLE, 10.4-RELEASE-p3, and 10.3-RELEASE-p24, not all information in the struct ptrace_lwpinfo is relevant for the state of any thread, and the kernel does not fill the irrelevant bytes or short strings. Since the structure filled by the kernel is allocated on the kernel stack and copied to userspace, a leak of information of the kernel stack of the thread is possible from the debugger. As a result, some bytes from the kernel stack of the thread using ptrace (PT_LWPINFO) call can be observed in userspace.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freebsd | Freebsd | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/101861Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039809Third Party AdvisoryVDB Entry
- https://www.freebsd.org/security/advisories/FreeBSD-SA-17:08.ptrace.ascVendor Advisory
- http://www.securityfocus.com/bid/101861Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039809Third Party AdvisoryVDB Entry
- https://www.freebsd.org/security/advisories/FreeBSD-SA-17:08.ptrace.ascVendor Advisory
FAQ
What is CVE-2017-1086?
CVE-2017-1086 is a vulnerability with a CVSS score of 3.3 (LOW). In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p4, 11.0-RELEASE-p15, 10.4-STABLE, 10.4-RELEASE-p3, and 10.3-RELEASE-p24, not all information in the struct ptrace_lwpinfo is relevant for the state of any ...
How severe is CVE-2017-1086?
CVE-2017-1086 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-1086?
Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.