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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3640 Security updates for the Linux Kernel 23 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: linux kernel Publisher: SUSE Operating System: SUSE Impact/Access: Root Compromise -- Remote/Unauthenticated Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-18386 CVE-2018-14633 CVE-2018-5391 Reference: ESB-2018.3590 ESB-2018.3563 ESB-2018.2612 ESB-2018.2361 Original Bulletin: https://www.suse.com/support/update/announcement/2018/suse-su-20183865-1/ https://www.suse.com/support/update/announcement/2018/suse-su-20183860-1/ https://www.suse.com/support/update/announcement/2018/suse-su-20183867-1/ Comment: This bulletin contains three (3) SUSE security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for the Linux Kernel (Live Patch 6 for SLE 12 SP3) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3865-1 Rating: important References: #1103098 #1112039 Cross-References: CVE-2018-18386 CVE-2018-5391 Affected Products: SUSE Linux Enterprise Live Patching 12-SP3 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for the Linux Kernel 4.4.103-6_33 fixes several issues. The following security issues were fixed: - CVE-2018-5391: Fixed a possible denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098). - CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bsc#1112039). 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 Live Patching 12-SP3: zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-2747=1 SUSE-SLE-Live-Patching-12-SP3-2018-2748=1 SUSE-SLE-Live-Patching-12-SP3-2018-2749=1 Package List: - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64): kgraft-patch-4_4_103-6_33-default-11-2.1 kgraft-patch-4_4_103-6_33-default-debuginfo-11-2.1 kgraft-patch-4_4_103-6_38-default-11-2.1 kgraft-patch-4_4_103-6_38-default-debuginfo-11-2.1 kgraft-patch-4_4_92-6_30-default-11-2.1 kgraft-patch-4_4_92-6_30-default-debuginfo-11-2.1 References: https://www.suse.com/security/cve/CVE-2018-18386.html https://www.suse.com/security/cve/CVE-2018-5391.html https://bugzilla.suse.com/1103098 https://bugzilla.suse.com/1112039 ______________________________________________________________________________ SUSE Security Update: Security update for the Linux Kernel (Live Patch 15 for SLE 12 SP3) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3860-1 Rating: important References: #1103098 Cross-References: CVE-2018-5391 Affected Products: SUSE Linux Enterprise Live Patching 12-SP3 ______________________________________________________________________________ An update that fixes one vulnerability is now available. Description: This update for the Linux Kernel 4.4.140-94_42 fixes one issue. The following security issue was fixed: - CVE-2018-5391: Fixed a possible denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098). 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 Live Patching 12-SP3: zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-2750=1 SUSE-SLE-Live-Patching-12-SP3-2018-2751=1 SUSE-SLE-Live-Patching-12-SP3-2018-2752=1 SUSE-SLE-Live-Patching-12-SP3-2018-2753=1 SUSE-SLE-Live-Patching-12-SP3-2018-2754=1 SUSE-SLE-Live-Patching-12-SP3-2018-2755=1 SUSE-SLE-Live-Patching-12-SP3-2018-2756=1 SUSE-SLE-Live-Patching-12-SP3-2018-2757=1 Package List: - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64): kgraft-patch-4_4_114-94_11-default-9-2.1 kgraft-patch-4_4_114-94_11-default-debuginfo-9-2.1 kgraft-patch-4_4_114-94_14-default-9-2.1 kgraft-patch-4_4_114-94_14-default-debuginfo-9-2.1 kgraft-patch-4_4_120-94_17-default-8-2.1 kgraft-patch-4_4_120-94_17-default-debuginfo-8-2.1 kgraft-patch-4_4_126-94_22-default-8-2.1 kgraft-patch-4_4_126-94_22-default-debuginfo-8-2.1 kgraft-patch-4_4_131-94_29-default-6-2.1 kgraft-patch-4_4_131-94_29-default-debuginfo-6-2.1 kgraft-patch-4_4_132-94_33-default-6-2.1 kgraft-patch-4_4_132-94_33-default-debuginfo-6-2.1 kgraft-patch-4_4_138-94_39-default-5-2.1 kgraft-patch-4_4_138-94_39-default-debuginfo-5-2.1 kgraft-patch-4_4_140-94_42-default-5-2.1 kgraft-patch-4_4_140-94_42-default-debuginfo-5-2.1 References: https://www.suse.com/security/cve/CVE-2018-5391.html https://bugzilla.suse.com/1103098 ______________________________________________________________________________ SUSE Security Update: Security update for the Linux Kernel (Live Patch 20 for SLE 12 SP3) ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3867-1 Rating: important References: #1107832 Cross-References: CVE-2018-14633 Affected Products: SUSE Linux Enterprise Live Patching 12-SP3 ______________________________________________________________________________ An update that fixes one vulnerability is now available. Description: This update for the Linux Kernel 4.4.156-94_64 fixes one issue. The following security issue was fixed: - CVE-2018-14633: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in the Linux kernel 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 Live Patching 12-SP3: zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-2746=1 Package List: - SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64): kgraft-patch-4_4_156-94_64-default-2-2.1 kgraft-patch-4_4_156-94_64-default-debuginfo-2-2.1 References: https://www.suse.com/security/cve/CVE-2018-14633.html 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 iQIVAwUBW/dNdGaOgq3Tt24GAQiyRxAAs1xHCOtD5sqatm1IokIZIb/Zdgl63UFV 6zv6FYAr8w1A+fDiiiDvIBHqevAfukLbt51HEBiTN1rv9axCx9GF3L9uwexTKmOg zjA2dlqQCe5bc3D3s/xoH1xQNXOSKMAAfhAjxo3XGFAZ8hYoqL1Eow9tsWFZbqyY JM1Cv6urQJNsnQjnysn5DKxgb+15ZNU1zjVfqLs2H/4FTjiMM3DMInIlarDlIWeH XbndVypevD+DZUEEy6KVNgf15TPI9lCzUQDDQ6Qs4RB1lnOR44bkf0HQqMEitLDX tffsC5RXRV/nVA7PNRTzDetJ/jGFdG8c02Ebak/mggitjySd3RfDZ3ERMHk2lcy5 1pAxKnl0Xci6CM/Tzif5U7VCcTP/AofP+xhmRCJzu1ekLRnY8lUM6J42W7tCWx42 XkMJD2v8gI8Xc/P84PFZBJgMQmof6as5RMNrlr2JT45BuaGD4npYWYkEml+oBfYH KXKk08vh9CcEmYp+8VMk8NiTC0uih5Ee65HwxvMFI6BYi3mOcBk0cquQobq8kfQj mcybG8M4kRygqHVvpT4vQm6Ejfq7LgigxIU4vXJlSx4HbtanYJfNa2agDCGtf/Ho 1M4DixHopTd+68iNuI59+ifVcbK5Z6QsA3m4S7lrzoC0VupS0iRR8F3bz0uv48T0 8N1QzxAPHQc= =aj3B -----END PGP SIGNATURE-----