Bug 1177780 - (CVE-2020-25650) VUL-0: CVE-2020-25650: spice-vdagent: memory DoS via arbitrary entries in `active_xfers` hash table
(CVE-2020-25650)
VUL-0: CVE-2020-25650: spice-vdagent: memory DoS via arbitrary entries in `ac...
Status: RESOLVED FIXED
Classification: Novell Products
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents
unspecified
Other Other
: P3 - Medium : Normal
: ---
Assigned To: Security Team bot
Security Team bot
https://smash.suse.de/issue/269397/
CVSSv3.1:SUSE:CVE-2020-25650:5.5:(AV:...
:
Depends on:
Blocks:
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Reported: 2020-10-16 07:34 UTC by Matthias Gerstner
Modified: 2021-08-23 08:43 UTC (History)
4 users (show)

See Also:
Found By: ---
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---


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Description Matthias Gerstner 2020-10-16 07:34:06 UTC
Split-off from audit bug 1173749

 ## a) Memory DoS via Arbitrary Entries in `active_xfers` Hash Table

 The `spice-vdagentd` maintains a hash map named `active_xfers` that maps
 `task_ids` to UNIX domain socket connections they belong to. These `task_ids`
 refer to ongoing file transfers from the host to the virtual machine.

 An arbitrary client connected to `spice-vdagentd` via a UNIX domain socket can
 trigger an entry into this hash map, without the requirement that the client
 is associated with the currently active graphical session (function
 `do_agent_file_xfer_status`, specifically `vdagentd.c:1025`). There is no limit
 on the maximum amount of file transfers ongoing in parallel and there are no
 timeouts applied for a file transfer to be finished.

 Therefore any unprivileged local user with access to the
 `/run/spice-vdagentd/spice-vdagent-sock` socket path can perform a memory
 denial-of-service by entering a large amount of entries into this hash map.
Comment 2 Swamp Workflow Management 2020-11-10 20:15:05 UTC
SUSE-SU-2020:3268-1: An update that solves four vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1173749,1177780,1177781,1177782,1177783
CVE References: CVE-2020-25650,CVE-2020-25651,CVE-2020-25652,CVE-2020-25653
JIRA References: 
Sources used:
SUSE Linux Enterprise Module for Desktop Applications 15-SP2 (src):    spice-vdagent-0.19.0-3.3.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 3 Swamp Workflow Management 2020-11-11 11:17:21 UTC
openSUSE-SU-2020:1898-1: An update that solves four vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1173749,1177780,1177781,1177782,1177783
CVE References: CVE-2020-25650,CVE-2020-25651,CVE-2020-25652,CVE-2020-25653
JIRA References: 
Sources used:
openSUSE Leap 15.2 (src):    spice-vdagent-0.19.0-lp152.2.3.1
Comment 4 Charles Arnold 2021-07-20 22:06:52 UTC
Submitted to SUSE:SLE-15-SP1:Update with SR#246273
Submitted to SUSE:SLE-15:Update 246274
Submitted to SUSE:SLE-12-SP5:Update with SR#246275
Submitted to SUSE:SLE-12-SP4:Update with SR#246276
Submitted to SUSE:SLE-12-SP3:Update with SR#246277
Submitted to SUSE:SLE-12-SP2:Update with SR#246278
Comment 7 Swamp Workflow Management 2021-08-05 14:18:43 UTC
openSUSE-SU-2021:2614-1: An update that solves four vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1173749,1177780,1177781,1177782,1177783
CVE References: CVE-2020-25650,CVE-2020-25651,CVE-2020-25652,CVE-2020-25653
JIRA References: 
Sources used:
openSUSE Leap 15.3 (src):    spice-vdagent-0.21.0-3.3.1
Comment 8 Swamp Workflow Management 2021-08-05 14:30:18 UTC
SUSE-SU-2021:2614-1: An update that solves four vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1173749,1177780,1177781,1177782,1177783
CVE References: CVE-2020-25650,CVE-2020-25651,CVE-2020-25652,CVE-2020-25653
JIRA References: 
Sources used:
SUSE Linux Enterprise Module for Desktop Applications 15-SP3 (src):    spice-vdagent-0.21.0-3.3.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 9 Swamp Workflow Management 2021-08-17 19:27:08 UTC
SUSE-SU-2021:2766-1: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1177780,1177781,1177782,1177783
CVE References: CVE-2020-25650,CVE-2020-25651,CVE-2020-25652,CVE-2020-25653
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 12-SP5 (src):    spice-vdagent-0.16.0-8.8.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 10 Swamp Workflow Management 2021-08-20 13:20:59 UTC
# maintenance_jira_update_notice
SUSE-SU-2021:2803-1: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1177780,1177781,1177782,1177783
CVE References: CVE-2020-25650,CVE-2020-25651,CVE-2020-25652,CVE-2020-25653
JIRA References: 
Sources used:
SUSE Manager Server 4.0 (src):    spice-vdagent-0.17.0-4.3.1
SUSE Manager Retail Branch Server 4.0 (src):    spice-vdagent-0.17.0-4.3.1
SUSE Manager Proxy 4.0 (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise Server for SAP 15-SP1 (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise Server for SAP 15 (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise Server 15-SP1-LTSS (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise Server 15-SP1-BCL (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise Server 15-LTSS (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise High Performance Computing 15-LTSS (src):    spice-vdagent-0.17.0-4.3.1
SUSE Linux Enterprise High Performance Computing 15-ESPOS (src):    spice-vdagent-0.17.0-4.3.1
SUSE Enterprise Storage 6 (src):    spice-vdagent-0.17.0-4.3.1
SUSE CaaS Platform 4.0 (src):    spice-vdagent-0.17.0-4.3.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 11 Wolfgang Frisch 2021-08-23 08:43:00 UTC
Released.