CVE-2020-25653

NameCVE-2020-25653
DescriptionA race condition vulnerability was found in the way the spice-vdagentd daemon handled new client connections. This flaw may allow an unprivileged local guest user to become the active agent for spice-vdagentd, possibly resulting in a denial of service or information leakage from the host. The highest threat from this vulnerability is to data confidentiality as well as system availability. This flaw affects spice-vdagent versions 0.20 and prior.
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-2524-1
NVD severitymedium
Debian Bugs973769

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
spice-vdagent (PTS)stretch0.17.0-1vulnerable
stretch (security)0.17.0-1+deb9u1fixed
buster0.18.0-1vulnerable
bullseye0.20.0-2fixed
bookworm, sid0.20.0-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
spice-vdagentsourcestretch0.17.0-1+deb9u1DLA-2524-1
spice-vdagentsource(unstable)0.20.0-2973769

Notes

[buster] - spice-vdagent <no-dsa> (Minor issue)
https://www.openwall.com/lists/oss-security/2020/11/04/1
https://gitlab.freedesktop.org/spice/linux/vd_agent/-/commit/51c415df82a52e9ec033225783c77df95f387891
https://gitlab.freedesktop.org/spice/linux/vd_agent/-/commit/5c50131797e985d0a5654c1fd7000ae945ed29a7

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