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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3250 SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 15 Linux Kernel and Live Patch 32 for SLE 12 SP1) 24 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel Publisher: SUSE Operating System: SUSE Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-17182 CVE-2018-14633 CVE-2018-5390 Reference: ASB-2018.0222 ASB-2018.0221 ESB-2018.3230 ESB-2018.3226 ESB-2018.3140 ESB-2018.3136 ESB-2018.3130 Original Bulletin: https://www.suse.com/support/update/announcement/2018/suse-su-20183331-1/ https://www.suse.com/support/update/announcement/2018/suse-su-20183328-1/ Comment: This bulletin contains two (2) SUSE security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 15) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3331-1 Rating: important References: #1107832 #1110233 Cross-References: CVE-2018-14633 CVE-2018-17182 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_13 fixes several issues. The following security issues were fixed: - CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bsc#1110233). - CVE-2018-14633: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. (bsc#1107832). 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-15-2018-2393=1 Package List: - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64): kernel-livepatch-4_12_14-25_13-default-4-2.1 kernel-livepatch-4_12_14-25_13-default-debuginfo-4-2.1 References: https://www.suse.com/security/cve/CVE-2018-14633.html https://www.suse.com/security/cve/CVE-2018-17182.html https://bugzilla.suse.com/1107832 https://bugzilla.suse.com/1110233 SUSE Security Update: Security update for the Linux Kernel (Live Patch 32 for SLE 12 SP1) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3328-1 Rating: important References: #1102682 #1107832 Cross-References: CVE-2018-14633 CVE-2018-5390 Affected Products: SUSE Linux Enterprise Server 12-SP1-LTSS ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for the Linux Kernel 3.12.74-60_64_107 fixes several issues. The following security issues were fixed: - CVE-2018-14633: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. (bsc#1107832). - CVE-2018-5390: The Linux kernel could be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service (bsc#1102682). 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 Server 12-SP1-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-2394=1 Package List: - SUSE Linux Enterprise Server 12-SP1-LTSS (x86_64): kgraft-patch-3_12_74-60_64_107-default-2-2.1 kgraft-patch-3_12_74-60_64_107-xen-2-2.1 References: https://www.suse.com/security/cve/CVE-2018-14633.html https://www.suse.com/security/cve/CVE-2018-5390.html https://bugzilla.suse.com/1102682 https://bugzilla.suse.com/1107832 - --------------------------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 iQIVAwUBW8/4FGaOgq3Tt24GAQg48xAAlXDnplBHIx8DgeDy+9S/EkySGF8EZVMa /iUCjC3RAAfVfly8AXU05tEJV3/y6/pJOOU1dG5gpqDI3/sJhH8U028DCE/ZZzrn wPsBvYwjzLJYuv0Hd9ddNE5Ooc8N1wzcL6T3edjyq3BxM25GqyAYXPri7XBSjiIW 6QgJWqD+okbsSR34PWKLfwO3dwsbZFVJjhunCpqylCQrVenM+atkx0tOJbQh30Rn lo4SMM8aGDu1YtEqE/ku8OraZfn8f39BsOan/kdxksfiGROeVwC+csvEnx+JCMth misGoUbqkzbUVuIYoTEzeVEiRZaGzFRvqBaLbrsExYirERNCaAQ4prUtpLASFQm4 by26UQav8mJmep+SRwK4NY1jPYWl4oLTlPTBS+9T5oVxPc97a07BLTldTPTI0y20 bQVMIofJTTz58nrafU50zq/GdyJrgmQJqT+glg8aDXcJInBie5V0Y61i7PPNGhg1 BYLx57gZQO66sIxYHF1Tn9b3xximXQ/B0ETvMNCfpf8d0kMevcs6KbUMC+rCc4AF NKyyFrLhGISaAbj6/tNIQ8fjz9hJmAMZZobfhq91HmCur/8N2V8bT9VrYVALKoiQ YELvt/32p09gGJiErLl1zknyHpsQ9CcLwjo3ntMF54W3gyCzqhHDPuxrM5pREyLf zmDvIyxw6pA= =ElGb -----END PGP SIGNATURE-----