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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0474 Security Bulletin: Vulnerabilities in the Linux kernel affect PowerKVM 14 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM PowerKVM Publisher: IBM Operating System: Linux variants Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Increased Privileges -- Remote with User Interaction Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-10675 CVE-2018-7566 CVE-2017-13215 Reference: ESB-2018.3373 ESB-2018.3229 ESB-2018.2344 ESB-2018.2343 ESB-2018.1412 ESB-2018.3742.3 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=ibm10870832 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerabilities in the Linux kernel affect PowerKVM More support for: PowerKVM Software version: 3.1 Operating system(s): Linux Reference #: 0870832 Modified date: 12 February 2019 Summary PowerKVM is affected by vulnerabilities in the Linux kernel . IBM has now addressed these vulnerabilities. Vulnerability Details CVEID: CVE-2018-10675 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a use-after-free in the do_get_mempolicy function in mm/mempolicy.c. By using specially crafted system calls, a local attacker could exploit this vulnerability to cause a denial of service. CVSS Base Score: 6.2 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 142895 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVEID: CVE-2018-7566 DESCRIPTION: Linux Kernel is vulnerable to a buffer overflow, caused by improper bounds checking by user-supplied input. By using an SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to /dev/snd/seq, a local authenticated attacker could overflow a buffer and execute arbitrary code on the system. CVSS Base Score: 7.8 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 141112 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) CVEID: CVE-2017-13215 DESCRIPTION: Google Android could allow a remote attacker to gain elevated privileges on the system, caused by a flaw in the Upstream kernel skcipher. By persuading a victim to open a specially-crafted application, a remote attacker could exploit this vulnerability to execute arbitrary code as a privileged process. CVSS Base Score: 7.8 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 137560 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) Affected Products and Versions PowerKVM 3.1 Remediation/Fixes Customers can update PowerKVM systems by using "yum update". Fix images are made available via Fix Central. See https://ibm.biz/BdHggw . This issue is addressed starting with v3.1.0.2 update 14. Workarounds and Mitigations none Change History 7 February 2019 - Initial Version Disclaimer According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXGTw1GaOgq3Tt24GAQhYxw/+KapAt3RGNrfTC9Vtyh2gzvLJ6yusFtgU tck0rMIvkyEQgrThNiiAq0Yk94qf95v3yr4ATPK0Y29HFe2DgFvf2e8GSrImLO2h IX5SqcbxD+TY1Pu7caEViWZdPF/wSUBUgeK4uFSUwtYv67/Jg5qU5j1cdy4inQw2 G1S5tjwtHDEolhMA1/NMnDpQpw0lSGabQFHICNV5m8BSAY/K6HAj4/RNuML+41mD Cbpyc1nAwcp5hl8l5ARtDU1JHg0Iif/HHBRNsSWYkIdRDaNmVi2nLxY9UZ6pI/VR iNSqNnUgD+9FieTGFf60hLKhQtv/xdEmrWSFM2XC5tknj7oIsQ+QvDsmQFknNN5O dvQiTje4r3NJPfv71yGOOHGyX78IrAjvgVi66ws9Ho50ygjnNVeKlJTAZXiwZ0yG 0A41yOONrBy8wKUMciDPdzY6Q3Xb1x6A5T7dnc/wrsiUZ0Rg+MIoCiVQH9hpApiC uGRix7nyiRoY+HJCU/f/vRYZgXLD/P+5zBf/5KOVgGVBvuFP9s2jST34U1jHp/AI kxTaxIme48934gtzeMWu48sce+fSwvSZswxKKf0YfjtOwAO0Hyme3o2bkc4o5zOB ES5hFAdkEbXuXgWu5f8qScPCvqAdMad4ct6jzAc4pWdFJkoidDRvrCMJE5v5j5c7 DzE/8f0J1sk= =Ymq7 -----END PGP SIGNATURE-----