Information disclosure in Xen - CVE-2013-4361

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Main Vulnerability Database Vulnerabilities #VU32626

Information disclosure in Xen - CVE-2013-4361

Published: October 1, 2013 / Updated: July 28, 2020


Vulnerability identifier: #VU32626
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-4361
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.

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.


Affected software

Xen
xen (Alpine package)

How to mitigate CVE-2013-4361

Install update from vendor's website.

xen (Alpine package) - update to 4.3.0-r8

External References

Related Security Bulletins