Input validation error in Xen - CVE-2015-4163
Published: June 15, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40714
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-4163
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows local guest domains to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference) via a hypercall without a GNTTABOP_setup_table or GNTTABOP_set_version.
Affected software
Xen
SUSE Linux
Fedora
xen
SUSE Linux
Fedora
xen
How to mitigate CVE-2015-4163
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
xen - addressed in versions 4.4.2-6.fc21, 4.5.0-11.fc22
External References
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3286
- http://www.securityfocus.com/bid/75141
- http://www.securitytracker.com/id/1032568
- http://xenbits.xen.org/xsa/advisory-134.html
- https://security.gentoo.org/glsa/201604-03
- https://support.citrix.com/article/CTX206006