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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2940 SUSE Security Update: Security update for the Linux Kernel 1 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: SUSE Operating System: SUSE Impact/Access: Root Compromise -- Existing Account Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-15471 CVE-2018-10938 CVE-2018-10902 CVE-2018-10853 Reference: ESB-2018.2885 ESB-2018.2831 ESB-2018.2698 Original Bulletin: https://www.suse.com/support/update/announcement/2018/suse-su-20182938-1/ https://www.suse.com/support/update/announcement/2018/suse-su-20182933-1/ https://www.suse.com/support/update/announcement/2018/suse-su-20182940-1/ https://www.suse.com/support/update/announcement/2018/suse-su-20182935-1/ Comment: This bulletin contains four (4) SUSE security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for the Linux Kernel (Live Patch 2 for SLE 15) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:2938-1 Rating: important References: #1106191 Cross-References: CVE-2018-10938 Affected Products: SUSE Linux Enterprise Module for Live Patching 15 ______________________________________________________________________________ An update that fixes one vulnerability is now available. Description: This update for the Linux Kernel 4.12.14-25_6 fixes one issue. The following security issue was fixed: - CVE-2018-10938: It was found that a crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system an attacker could leverage this flaw (bsc#1106191). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Module for Live Patching 15: zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2075=1 Package List: - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64): kernel-livepatch-4_12_14-25_6-default-4-2.1 kernel-livepatch-4_12_14-25_6-default-debuginfo-4-2.1 References: https://www.suse.com/security/cve/CVE-2018-10938.html https://bugzilla.suse.com/1106191 - --- SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 15) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:2933-1 Rating: important References: #1097108 #1103203 #1105026 Cross-References: CVE-2018-10853 CVE-2018-15471 Affected Products: SUSE Linux Enterprise Module for Live Patching 15 ______________________________________________________________________________ An update that solves two vulnerabilities and has one errata is now available. Description: This update for the Linux Kernel 4.12.14-25_11 fixes several issues. The following security issues were fixed: - CVE-2018-15471: An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c. The Linux netback driver allowed frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks (bsc#1105026). - CVE-2018-10853: A KVM guest userspace to guest kernel write was fixed, which could be used by guest users to crash the guest kernel (bsc#1097108). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Module for Live Patching 15: zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2072=1 Package List: - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64): kernel-livepatch-4_12_14-25_13-default-2-2.2 kernel-livepatch-4_12_14-25_13-default-debuginfo-2-2.2 References: https://www.suse.com/security/cve/CVE-2018-10853.html https://www.suse.com/security/cve/CVE-2018-15471.html https://bugzilla.suse.com/1097108 https://bugzilla.suse.com/1103203 https://bugzilla.suse.com/1105026 - --- SUSE Security Update: Security update for the Linux Kernel (Live Patch 1 for SLE 15) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:2940-1 Rating: important References: #1105323 #1106191 Cross-References: CVE-2018-10902 CVE-2018-10938 Affected Products: SUSE Linux Enterprise Module for Live Patching 15 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for the Linux Kernel 4.12.14-25_3 fixes several issues. The following security issues were fixed: - CVE-2018-10938: It was found that a crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system an attacker could leverage this flaw. - CVE-2018-10902: It was found that the raw midi kernel driver did not protect against concurrent access which lead to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status(), allowing a malicious local attacker to use this for privilege escalation (bsc#1105323). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Module for Live Patching 15: zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2073=1 SUSE-SLE-Module-Live-Patching-15-2018-2074=1 Package List: - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64): kernel-livepatch-4_12_14-23-default-4-10.2 kernel-livepatch-4_12_14-23-default-debuginfo-4-10.2 kernel-livepatch-4_12_14-25_3-default-4-2.1 kernel-livepatch-4_12_14-25_3-default-debuginfo-4-2.1 kernel-livepatch-SLE15_Update_0-debugsource-4-10.2 References: https://www.suse.com/security/cve/CVE-2018-10902.html https://www.suse.com/security/cve/CVE-2018-10938.html https://bugzilla.suse.com/1105323 https://bugzilla.suse.com/1106191 - --- SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 15) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:2935-1 Rating: important References: #1097108 #1103203 #1105026 #1106191 Cross-References: CVE-2018-10853 CVE-2018-10938 CVE-2018-15471 Affected Products: SUSE Linux Enterprise Module for Live Patching 15 ______________________________________________________________________________ An update that solves three vulnerabilities and has one errata is now available. Description: This update for the Linux Kernel 4.12.14-25_13 fixes several issues. The following security issues were fixed: - CVE-2018-10938: It was found that a crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system an attacker could leverage this flaw (bsc#1106191). - CVE-2018-15471: It was found that the netback driver allowed frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may caused the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks (bsc#1105026). - CVE-2018-10853: It was found that the KVM hypervisor emulated instructions did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest (bsc#1097108). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Module for Live Patching 15: zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2076=1 Package List: - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64): kernel-livepatch-4_12_14-25_13-default-3-2.3 kernel-livepatch-4_12_14-25_13-default-debuginfo-3-2.3 References: https://www.suse.com/security/cve/CVE-2018-10853.html https://www.suse.com/security/cve/CVE-2018-10938.html https://www.suse.com/security/cve/CVE-2018-15471.html https://bugzilla.suse.com/1097108 https://bugzilla.suse.com/1103203 https://bugzilla.suse.com/1105026 https://bugzilla.suse.com/1106191 - --------------------------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 iQIVAwUBW7FZtGaOgq3Tt24GAQgynhAAhBctXpTy1WXhC65G+aJEIFZs5S6wQeAs 7qb3Bhw+NP9h/VSySrjt3s/SbRWavkQSG+4wfGerxy1qjzNLwkROXjXUU97ZgnZy E7c4l2+cImm+Pb3wI+dztLuSWbOUY8mhHV3Img0LXFvGc1iKxouOm9mmAXLymDXV QUL+JHdZVac86TXz9CyxWv2fxeKPyxifb7/ejPzKiSyJV5gCQ0CqtWQ8V0B9+psm GEJ9XsIEiW5xEA/haKlOi6qI8fVgTcL2QkAHJWsQI6efGmyKHFqp/ByeKIICKLix D7Z5KOWTBwCPlKyAbLdRcjjiqHCjZnK6HCNp0LhrPrEoslB5JMVc0Z1akcue+t9k bjj5yjORpe4VzehHtQxXc1bZAtTyVPDyY4VMcNtxsMN24G76+p4lj9oVMtqt1Okr ufEd0gMxpqhixNqc9Z3GXX0fKcYsIJnPvCVd9P5LuXPyM/QmcY8CrXzy+DJn6Wnc jqR0ur/n7kH0aIqRsoomcExoGReT5Sqvyi6v5CPdLgxcj9o7C0GYm4iunkEcNsel k8HhklypiQquwgENcyn59+ZTwtEcQny8xIz24yuxdNigqp1xm7Erk1RGRhTiY5fl XWNBht0Q1GCENNgycCP07euWW1e7y2adPjw1Y1ld+0Q/535UBfmE/s++O0oRI8iR GMRldDpI8uU= =QdYJ -----END PGP SIGNATURE-----