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Red Hat Enterprise Linux 8 RHSA-2021:1791-01 Moderate: spice-vdagent DoS

red hat
Calendar Grey May 18, 2021
Dist Redhat Esm H88
A recent enhancement for spice-vdagent on Red Hat Enterprise Linux 8 has been released, correcting multiple vulnerabilities within the application.
An update for spice-vdagent is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The spice-vdagent packages provide a SPICE agent for Linux guests.
Security Fix(es):
* spice-vdagent: possible file transfer DoS and information leak via active_xfers hash map (CVE-2020-25651)
* spice-vdagent: UNIX domain socket peer PID retrieved via SO_PEERCRED is subject to race condition (CVE-2020-25653)
* spice-vdagent: memory DoS via arbitrary entries in active_xfers hash table (CVE-2020-25650)
* spice-vdagent: possibility to exhaust file descriptors in vdagentd (CVE-2020-25652)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate information leak update DoS security fix Red Hat Enterprise Linux spice-vdagent

References

https://access.redhat.com/security/cve/CVE-2020-25650 https://access.redhat.com/security/cve/CVE-2020-25651 https://access.redhat.com/security/cve/CVE-2020-25652 https://access.redhat.com/security/cve/CVE-2020-25653 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: spice-vdagent-0.20.0-3.el8.src.rpm
aarch64: spice-vdagent-0.20.0-3.el8.aarch64.rpm spice-vdagent-debuginfo-0.20.0-3.el8.aarch64.rpm spice-vdagent-debugsource-0.20.0-3.el8.aarch64.rpm
ppc64le: spice-vdagent-0.20.0-3.el8.ppc64le.rpm spice-vdagent-debuginfo-0.20.0-3.el8.ppc64le.rpm spice-vdagent-debugsource-0.20.0-3.el8.ppc64le.rpm
s390x: spice-vdagent-0.20.0-3.el8.s390x.rpm spice-vdagent-debuginfo-0.20.0-3.el8.s390x.rpm spice-vdagent-debugsource-0.20.0-3.el8.s390x.rpm
x86_64: spice-vdagent-0.20.0-3.el8.x86_64.rpm spice-vdagent-debuginfo-0.20.0-3.el8.x86_64.rpm spice-vdagent-debugsource-0.20.0-3.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/


Advisory ID: RHSA-2021:1791-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1791
Issue date: 2021-05-18

Topic

An update for spice-vdagent is now available for Red Hat Enterprise Linux8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate information leak update DoS security fix Red Hat Enterprise Linux spice-vdagent

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1790904 - [wayland] Multiple displays: mouse coordinates taken from the other display

1824610 - [wayland] 3. and 4. spice display does not react to mouse interaction

1886345 - CVE-2020-25650 spice-vdagent: memory DoS via arbitrary entries in active_xfers hash table

1886359 - CVE-2020-25651 spice-vdagent: possible file transfer DoS and information leak via active_xfers hash map

1886366 - CVE-2020-25652 spice-vdagent: possibility to exhaust file descriptors in vdagentd

1886372 - CVE-2020-25653 spice-vdagent: UNIX domain socket peer PID retrieved via SO_PEERCRED is subject to race condition

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