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Bugzilla – Full Text Bug Listing |
| Summary: | VUL-0: CVE-2023-34966: samba: Samba Spotlight mdssvc RPC Request Infinite Loop Denial-of-Service Vulnerability | ||
|---|---|---|---|
| Product: | [Novell Products] SUSE Security Incidents | Reporter: | Robert Frohl <rfrohl> |
| Component: | Incidents | Assignee: | Security Team bot <security-team> |
| Status: | RESOLVED FIXED | QA Contact: | Security Team bot <security-team> |
| Severity: | Normal | ||
| Priority: | P3 - Medium | CC: | meissner, nopower, samba-maintainers, scabrero |
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Hardware: | Other | ||
| OS: | Other | ||
| URL: | https://smash.suse.de/issue/371615/ | ||
| Whiteboard: | CVSSv3.1:SUSE:CVE-2023-34966:7.5:(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) | ||
| Found By: | --- | Services Priority: | |
| Business Priority: | Blocker: | --- | |
| Marketing QA Status: | --- | IT Deployment: | --- |
SUSE-SU-2023:2888-1: An update that solves four vulnerabilities and has one fix can now be installed. Category: security (important) Bug References: 1213171, 1213172, 1213173, 1213174, 1213384 CVE References: CVE-2022-2127, CVE-2023-34966, CVE-2023-34967, CVE-2023-34968 Sources used: SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src): samba-4.15.13+git.621.c8ae836ff82-3.85.1 SUSE Linux Enterprise High Availability Extension 12 SP5 (src): samba-4.15.13+git.621.c8ae836ff82-3.85.1 SUSE Linux Enterprise Software Development Kit 12 SP5 (src): samba-4.15.13+git.621.c8ae836ff82-3.85.1 SUSE Linux Enterprise High Performance Computing 12 SP5 (src): samba-4.15.13+git.621.c8ae836ff82-3.85.1 SUSE Linux Enterprise Server 12 SP5 (src): samba-4.15.13+git.621.c8ae836ff82-3.85.1 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. SUSE-SU-2023:3060-1: An update that solves four vulnerabilities and has one fix can now be installed. Category: security (important) Bug References: 1213171, 1213172, 1213173, 1213174, 1213384 CVE References: CVE-2022-2127, CVE-2023-34966, CVE-2023-34967, CVE-2023-34968 Sources used: SUSE Enterprise Storage 7.1 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise Micro 5.2 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise Micro for Rancher 5.2 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise High Availability Extension 15 SP3 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP3 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise Real Time 15 SP3 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise Server 15 SP3 LTSS 15-SP3 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Linux Enterprise Server for SAP Applications 15 SP3 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Manager Proxy 4.2 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Manager Retail Branch Server 4.2 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 SUSE Manager Server 4.2 (src): samba-4.15.13+git.663.9c654e06cdb-150300.3.57.5 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. SUSE-SU-2023:3066-1: An update that solves four vulnerabilities and has one fix can now be installed. Category: security (important) Bug References: 1213171, 1213172, 1213173, 1213174, 1213384 CVE References: CVE-2022-2127, CVE-2023-34966, CVE-2023-34967, CVE-2023-34968 Sources used: SUSE Enterprise Storage 7 (src): samba-4.13.13+git.643.8caa136952b-150200.3.26.3 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. Reassigned to security team to close it. SUSE-SU-2023:2929-1: An update that solves six vulnerabilities and has two security fixes can now be installed. Category: security (important) Bug References: 1212375, 1213170, 1213171, 1213172, 1213173, 1213174, 1213384, 1213386 CVE References: CVE-2020-25720, CVE-2022-2127, CVE-2023-3347, CVE-2023-34966, CVE-2023-34967, CVE-2023-34968 Sources used: openSUSE Leap 15.5 (src): samba-4.17.9+git.367.dae41ffdd1f-150500.3.5.1 Basesystem Module 15-SP5 (src): samba-4.17.9+git.367.dae41ffdd1f-150500.3.5.1 SUSE Linux Enterprise High Availability Extension 15 SP5 (src): samba-4.17.9+git.367.dae41ffdd1f-150500.3.5.1 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. SUSE-SU-2023:2930-1: An update that solves four vulnerabilities and has one security fix can now be installed. Category: security (important) Bug References: 1213171, 1213172, 1213173, 1213174, 1213384 CVE References: CVE-2022-2127, CVE-2023-34966, CVE-2023-34967, CVE-2023-34968 Sources used: openSUSE Leap 15.4 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 openSUSE Leap Micro 5.3 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 openSUSE Leap Micro 5.4 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 SUSE Linux Enterprise Micro for Rancher 5.3 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 SUSE Linux Enterprise Micro 5.3 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 SUSE Linux Enterprise Micro for Rancher 5.4 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 SUSE Linux Enterprise Micro 5.4 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 Basesystem Module 15-SP4 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 SUSE Linux Enterprise High Availability Extension 15 SP4 (src): samba-4.15.13+git.663.9c654e06cdb-150400.3.28.1 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. All done, closing. |
=========================================================== == Subject: Samba Spotlight mdssvc RPC Request Infinite == Loop Denial-of-Service Vulnerability == == CVE ID#: CVE-2023-34966 == == Versions: All versions of Samba prior to 4.18.5, 4.17.10 and 4.16.11. == == Summary: An infinite loop bug in Samba's mdssvc RPC == service for Spotlight can be triggered == by an unauthenticated attacker by issuing a == malformed RPC request. =========================================================== =========== Description =========== 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 bug only affects servers where Spotlight is explicitly enabled globally or on individual shares with "spotlight = yes". ================== Patch Availability ================== Patches addressing both these issues have been posted to: https://www.samba.org/samba/security/ Additionally, Samba 4.18.5, 4.17.10 and 4.16.11 have been issued as security releases to correct the defect. Samba administrators are advised to upgrade to these releases or apply the patch as soon as possible. ================== CVSSv3 calculation ================== CVSS 3.0: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (7.5) ========== Workaround ========== As a possible workaround disable Spotlight by removing all configuration stanzas that enable Spotlight ("spotlight = yes|true"). ======= Credits ======= Originally reported by Florent Saudel of the Thalium team working with Trend Micro Zero Day Initiative. Patches provided by Ralph Boehme of SerNet and the Samba team. ========================================================== == Our Code, Our Bugs, Our Responsibility. == The Samba Team ========================================================== https://www.samba.org/samba/security/CVE-2023-34966.html