CVE-2017-17563

NameCVE-2017-17563
DescriptionAn issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1230-1, DLA-1549-1, DSA-4112-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xen (PTS)stretch (security), stretch4.8.5.final+shim4.10.4-1+deb9u12fixed
buster, buster (security)4.11.3+24-g14b62ab3e5-1~deb10u1fixed
bullseye, sid4.11.4-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xensource(unstable)4.8.3+comet2+shim4.10.0+comet3-1+deb9u5
xensourcejessie4.4.4lts2-0+deb8u1DLA-1549-1
xensourcestretch4.8.3+comet2+shim4.10.0+comet3-1+deb9u4.1DSA-4112-1
xensourcewheezy4.1.6.lts1-11DLA-1230-1

Notes

https://xenbits.xen.org/xsa/advisory-249.html

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