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| author |   Yury German <blueknight@gentoo.org> | 2017-03-27 23:16:56 -0400 |
|---|---|---|
| committer | Yury German <blueknight@gentoo.org> | 2017-03-27 23:16:56 -0400 |
| commit | 8b74e819faebc49a67fe1d020f832c2d78298453 (patch) | |
| tree | eb353392a796051decff2a9c1fbda7335799270b | |
| parent | Add GLSA 201703-06 (diff) | |
| download | glsa-8b74e819faebc49a67fe1d020f832c2d78298453.tar.gz glsa-8b74e819faebc49a67fe1d020f832c2d78298453.tar.bz2 glsa-8b74e819faebc49a67fe1d020f832c2d78298453.zip | |
Add GLSA 201703-07
| -rw-r--r-- | glsa-201703-07.xml | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/glsa-201703-07.xml b/glsa-201703-07.xml new file mode 100644 index 00000000..de0af87a --- /dev/null +++ b/glsa-201703-07.xml @@ -0,0 +1,63 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> +<glsa id="201703-07"> + <title>Xen: Privilege Escalation</title> + <synopsis>A vulnerability in Xen's bundled QEMU version might allow privilege + escalation. + </synopsis> + <product type="ebuild">xen</product> + <announced>2017-03-28</announced> + <revised>2017-03-28: 1</revised> + <bug>609120</bug> + <access>local</access> + <affected> + <package name="app-emulation/xen-tools" auto="yes" arch="*"> + <unaffected range="ge">4.7.1-r8</unaffected> + <vulnerable range="lt">4.7.1-r8</vulnerable> + </package> + </affected> + <background> + <p>Xen is a bare-metal hypervisor.</p> + </background> + <description> + <p>In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine + cirrus_bitblt_cputovideo fails to check wethehr the specified memory + region is safe. + </p> + </description> + <impact type="normal"> + <p>A local attacker could potentially execute arbitrary code with + privileges of Xen (QEMU) process on the host, gain privileges on the host + system, or cause a Denial of Service condition. + </p> + </impact> + <workaround> + <p>Running guests in Paravirtualization (PV) mode, or running guests in + Hardware-assisted virtualizion (HVM) utilizing stub domains mitigate + the issue. + </p> + + <p>Running HVM guests with the device model in a stubdomain will mitigate + the issue. + </p> + + <p>Changing the video card emulation to stdvga (stdvga=1, vga=”stdvga”, + in the xl domain configuration) will avoid the vulnerability. + </p> + </workaround> + <resolution> + <p>All Xen Tools users should upgrade to the latest version:</p> + + <code> + # emerge --sync + # emerge --ask --oneshot --verbose + ">=app-emulation/xen-tools-4.7.1-r8" + </code> + + </resolution> + <references> + <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-2620">CVE-2017-2620</uri> + </references> + <metadata tag="requester" timestamp="2017-02-24T02:24:45Z">BlueKnight</metadata> + <metadata tag="submitter" timestamp="2017-03-28T03:15:18Z">whissi</metadata> +</glsa> |