CVE-2020-25653: Race Condition
First published: Thu Oct 08 2020(Updated: )
A 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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Spice-space Spice-vdagent | <=0.20.0 | |
| Debian Debian Linux | =9.0 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| redhat/spice-vdagent | <0.21.0 | 0.21.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1886372
- https://lists.debian.org/debian-lts-announce/2021/01/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GQT56LATVTB2DJOVVJOKQVMVUXYCT2VB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIWJ2EIQXWEA2VDBODEATHAT37X4CREP/
- https://www.openwall.com/lists/oss-security/2020/11/04/1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1894436
- https://github.com/freedesktop/spice-vd_agent/commit/51c415df82a52e9ec033225783c77df95f387891
- https://github.com/freedesktop/spice-vd_agent/commit/5c50131797e985d0a5654c1fd7000ae945ed29a7
- https://access.redhat.com/security/cve/cve-2020-25653
- https://access.redhat.com/errata/RHSA-2021:1791
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OIWJ2EIQXWEA2VDBODEATHAT37X4CREP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GQT56LATVTB2DJOVVJOKQVMVUXYCT2VB/
Frequently Asked Questions
What is CVE-2020-25653?
CVE-2020-25653 is a race condition vulnerability found in the spice-vdagentd daemon, which handles new client connections.
What is the impact of CVE-2020-25653?
CVE-2020-25653 may allow an unprivileged local guest user to become the active agent for spice-vdagentd, resulting in a denial of service or information leakage from the host.
What software versions are affected by CVE-2020-25653?
Versions up to and including 0.20.0 of spice-vdagent, Debian Linux 9.0, Fedora 32, and Fedora 33 are affected.
How severe is CVE-2020-25653?
CVE-2020-25653 has a severity rating of 6.3 (medium).
How do I fix CVE-2020-25653?
To fix CVE-2020-25653, update to version 0.21.0 of spice-vdagent.
- agent/weakness
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- collector/nvd-index
- agent/software-canonical-lookup
- agent/softwarecombine
- agent/references
- agent/remedy
- agent/severity
- agent/author
- agent/description
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2020-25653
- agent/tags
- agent/event
- collector/mitre-cve
- source/MITRE
- vendor/spice-space
- canonical/spice-space spice-vdagent
- version/spice-space spice-vdagent/0.20.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/32
- version/fedoraproject fedora/33
- package-manager/redhat