Bug 2222793 (CVE-2023-34966) - CVE-2023-34966 samba: infinite loop in mdssvc RPC service for spotlight
Summary: CVE-2023-34966 samba: infinite loop in mdssvc RPC service for spotlight
Keywords:
Status: NEW
Alias: CVE-2023-34966
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2222896 2222894 2222895 2224253
Blocks: 2216374
TreeView+ depends on / blocked
 
Reported: 2023-07-13 18:08 UTC by TEJ RATHI
Modified: 2024-05-08 11:28 UTC (History)
10 users (show)

Fixed In Version: samba 4.16.11, samba 4.17.10, samba 4.18.5
Doc Type: If docs needed, set a value
Doc Text:
An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:6667 0 None None None 2023-11-07 08:22:28 UTC
Red Hat Product Errata RHSA-2023:7139 0 None None None 2023-11-14 15:22:03 UTC
Red Hat Product Errata RHSA-2024:0423 0 None None None 2024-01-24 16:48:20 UTC
Red Hat Product Errata RHSA-2024:0580 0 None None None 2024-01-30 13:24:29 UTC

Description TEJ RATHI 2023-07-13 18:08:13 UTC 
When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This infinite loop bug in Samba's mdssvc RPC service for Spotlight can be triggered by an unauthenticated attacker by issuing a malformed RPC request.
Comment 2 TEJ RATHI 2023-07-20 09:25:10 UTC 
This CVE is public now - https://www.samba.org/samba/security/CVE-2023-34966.html
Comment 3 TEJ RATHI 2023-07-20 09:33:10 UTC 
Created samba tracking bugs for this issue:

Affects: fedora-all [bug 2224253]
Comment 4 errata-xmlrpc 2023-11-07 08:22:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6667 https://access.redhat.com/errata/RHSA-2023:6667
Comment 5 errata-xmlrpc 2023-11-14 15:22:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:7139 https://access.redhat.com/errata/RHSA-2023:7139
Comment 7 errata-xmlrpc 2024-01-24 16:48:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0423 https://access.redhat.com/errata/RHSA-2024:0423
Comment 8 errata-xmlrpc 2024-01-30 13:24:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:0580 https://access.redhat.com/errata/RHSA-2024:0580
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