Permissions, Privileges, and Access Controls in Fedora - CVE-2015-2152
Published: March 18, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40869
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-2152
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate data.
Xen 4.5.x and earlier enables certain default backends when emulating a VGA device for an x86 HVM guest qemu even when the configuration disables them, which allows local guest users to obtain access to the VGA console by (1) setting the DISPLAY environment variable, when compiled with SDL support, or connecting to the VNC server on (2) ::1 or (3) 127.0.0.1, when not compiled with SDL support.
Affected software
Fedora
Gentoo Linux
SUSE Linux
xen
Gentoo Linux
SUSE Linux
xen
How to mitigate CVE-2015-2152
Install update from vendor's website.
xen - addressed in versions 4.4.1-15.fc21, 4.4.1-16.fc21, 4.5.0-5.fc22, 4.5.0-6.fc22
External References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
- http://www.securityfocus.com/bid/73068
- http://www.securitytracker.com/id/1031806
- http://www.securitytracker.com/id/1031919
- http://xenbits.xen.org/xsa/advisory-119.html
- https://security.gentoo.org/glsa/201504-04