Vulnerability from csaf_suse
Published
2019-04-29 06:09
Modified
2019-04-29 06:09
Summary
Security update for openssh

Notes

Title of the patch
Security update for openssh
Description of the patch
This update for openssh fixes the following issues: Following security issues have been fixed: - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163) - CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) Also the following security related hardening change was done: - Remove arcfour,cast,blowfish from list of default ciphers. (bsc#982273) And the following non-security issues were fixed: - Stop leaking File descriptors (bsc#964336) - sftp-client.c returns wrong error code upon failure (bsc#1091396)
Patchnames
SUSE-SLE-SAP-12-SP1-2019-1081
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

{
   document: {
      aggregate_severity: {
         namespace: "https://www.suse.com/support/security/rating/",
         text: "moderate",
      },
      category: "csaf_security_advisory",
      csaf_version: "2.0",
      distribution: {
         text: "Copyright 2024 SUSE LLC. All rights reserved.",
         tlp: {
            label: "WHITE",
            url: "https://www.first.org/tlp/",
         },
      },
      lang: "en",
      notes: [
         {
            category: "summary",
            text: "Security update for openssh",
            title: "Title of the patch",
         },
         {
            category: "description",
            text: "This update for openssh fixes the following issues:\n\nFollowing security issues have been fixed:\n\n- CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163)\n- CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010)\n\nAlso the following security related hardening change was done:\n\n- Remove arcfour,cast,blowfish from list of default ciphers. (bsc#982273)\n\nAnd the following non-security issues were fixed:\n\n- Stop leaking File descriptors (bsc#964336)\n- sftp-client.c returns wrong error code upon failure (bsc#1091396)\n",
            title: "Description of the patch",
         },
         {
            category: "details",
            text: "SUSE-SLE-SAP-12-SP1-2019-1081",
            title: "Patchnames",
         },
         {
            category: "legal_disclaimer",
            text: "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
            title: "Terms of use",
         },
      ],
      publisher: {
         category: "vendor",
         contact_details: "https://www.suse.com/support/security/contact/",
         name: "SUSE Product Security Team",
         namespace: "https://www.suse.com/",
      },
      references: [
         {
            category: "external",
            summary: "SUSE ratings",
            url: "https://www.suse.com/support/security/rating/",
         },
         {
            category: "self",
            summary: "URL of this CSAF notice",
            url: "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2018_3776-2.json",
         },
         {
            category: "self",
            summary: "URL for SUSE-SU-2018:3776-2",
            url: "https://www.suse.com/support/update/announcement/2018/suse-su-20183776-2/",
         },
         {
            category: "self",
            summary: "E-Mail link for SUSE-SU-2018:3776-2",
            url: "https://lists.suse.com/pipermail/sle-security-updates/2019-April/005403.html",
         },
         {
            category: "self",
            summary: "SUSE Bug 1091396",
            url: "https://bugzilla.suse.com/1091396",
         },
         {
            category: "self",
            summary: "SUSE Bug 1105010",
            url: "https://bugzilla.suse.com/1105010",
         },
         {
            category: "self",
            summary: "SUSE Bug 1106163",
            url: "https://bugzilla.suse.com/1106163",
         },
         {
            category: "self",
            summary: "SUSE Bug 964336",
            url: "https://bugzilla.suse.com/964336",
         },
         {
            category: "self",
            summary: "SUSE Bug 982273",
            url: "https://bugzilla.suse.com/982273",
         },
         {
            category: "self",
            summary: "SUSE CVE CVE-2018-15473 page",
            url: "https://www.suse.com/security/cve/CVE-2018-15473/",
         },
      ],
      title: "Security update for openssh",
      tracking: {
         current_release_date: "2019-04-29T06:09:11Z",
         generator: {
            date: "2019-04-29T06:09:11Z",
            engine: {
               name: "cve-database.git:bin/generate-csaf.pl",
               version: "1",
            },
         },
         id: "SUSE-SU-2018:3776-2",
         initial_release_date: "2019-04-29T06:09:11Z",
         revision_history: [
            {
               date: "2019-04-29T06:09:11Z",
               number: "1",
               summary: "Current version",
            },
         ],
         status: "final",
         version: "1",
      },
   },
   product_tree: {
      branches: [
         {
            branches: [
               {
                  branches: [
                     {
                        category: "product_version",
                        name: "openssh-6.6p1-54.18.1.x86_64",
                        product: {
                           name: "openssh-6.6p1-54.18.1.x86_64",
                           product_id: "openssh-6.6p1-54.18.1.x86_64",
                        },
                     },
                     {
                        category: "product_version",
                        name: "openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
                        product: {
                           name: "openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
                           product_id: "openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
                        },
                     },
                     {
                        category: "product_version",
                        name: "openssh-fips-6.6p1-54.18.1.x86_64",
                        product: {
                           name: "openssh-fips-6.6p1-54.18.1.x86_64",
                           product_id: "openssh-fips-6.6p1-54.18.1.x86_64",
                        },
                     },
                     {
                        category: "product_version",
                        name: "openssh-helpers-6.6p1-54.18.1.x86_64",
                        product: {
                           name: "openssh-helpers-6.6p1-54.18.1.x86_64",
                           product_id: "openssh-helpers-6.6p1-54.18.1.x86_64",
                        },
                     },
                  ],
                  category: "architecture",
                  name: "x86_64",
               },
               {
                  branches: [
                     {
                        category: "product_name",
                        name: "SUSE Linux Enterprise Server for SAP Applications 12 SP1",
                        product: {
                           name: "SUSE Linux Enterprise Server for SAP Applications 12 SP1",
                           product_id: "SUSE Linux Enterprise Server for SAP Applications 12 SP1",
                           product_identification_helper: {
                              cpe: "cpe:/o:suse:sles_sap:12:sp1",
                           },
                        },
                     },
                  ],
                  category: "product_family",
                  name: "SUSE Linux Enterprise",
               },
            ],
            category: "vendor",
            name: "SUSE",
         },
      ],
      relationships: [
         {
            category: "default_component_of",
            full_product_name: {
               name: "openssh-6.6p1-54.18.1.x86_64 as component of SUSE Linux Enterprise Server for SAP Applications 12 SP1",
               product_id: "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-6.6p1-54.18.1.x86_64",
            },
            product_reference: "openssh-6.6p1-54.18.1.x86_64",
            relates_to_product_reference: "SUSE Linux Enterprise Server for SAP Applications 12 SP1",
         },
         {
            category: "default_component_of",
            full_product_name: {
               name: "openssh-askpass-gnome-6.6p1-54.18.1.x86_64 as component of SUSE Linux Enterprise Server for SAP Applications 12 SP1",
               product_id: "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
            },
            product_reference: "openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
            relates_to_product_reference: "SUSE Linux Enterprise Server for SAP Applications 12 SP1",
         },
         {
            category: "default_component_of",
            full_product_name: {
               name: "openssh-fips-6.6p1-54.18.1.x86_64 as component of SUSE Linux Enterprise Server for SAP Applications 12 SP1",
               product_id: "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-fips-6.6p1-54.18.1.x86_64",
            },
            product_reference: "openssh-fips-6.6p1-54.18.1.x86_64",
            relates_to_product_reference: "SUSE Linux Enterprise Server for SAP Applications 12 SP1",
         },
         {
            category: "default_component_of",
            full_product_name: {
               name: "openssh-helpers-6.6p1-54.18.1.x86_64 as component of SUSE Linux Enterprise Server for SAP Applications 12 SP1",
               product_id: "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-helpers-6.6p1-54.18.1.x86_64",
            },
            product_reference: "openssh-helpers-6.6p1-54.18.1.x86_64",
            relates_to_product_reference: "SUSE Linux Enterprise Server for SAP Applications 12 SP1",
         },
      ],
   },
   vulnerabilities: [
      {
         cve: "CVE-2018-15473",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2018-15473",
            },
         ],
         notes: [
            {
               category: "general",
               text: "OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
               "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-6.6p1-54.18.1.x86_64",
               "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
               "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-fips-6.6p1-54.18.1.x86_64",
               "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-helpers-6.6p1-54.18.1.x86_64",
            ],
         },
         references: [
            {
               category: "external",
               summary: "CVE-2018-15473",
               url: "https://www.suse.com/security/cve/CVE-2018-15473",
            },
            {
               category: "external",
               summary: "SUSE Bug 1105010 for CVE-2018-15473",
               url: "https://bugzilla.suse.com/1105010",
            },
            {
               category: "external",
               summary: "SUSE Bug 1106163 for CVE-2018-15473",
               url: "https://bugzilla.suse.com/1106163",
            },
            {
               category: "external",
               summary: "SUSE Bug 1123133 for CVE-2018-15473",
               url: "https://bugzilla.suse.com/1123133",
            },
            {
               category: "external",
               summary: "SUSE Bug 1138392 for CVE-2018-15473",
               url: "https://bugzilla.suse.com/1138392",
            },
            {
               category: "external",
               summary: "SUSE Bug 1205621 for CVE-2018-15473",
               url: "https://bugzilla.suse.com/1205621",
            },
         ],
         remediations: [
            {
               category: "vendor_fix",
               details: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
               product_ids: [
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-6.6p1-54.18.1.x86_64",
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-fips-6.6p1-54.18.1.x86_64",
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-helpers-6.6p1-54.18.1.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 5.3,
                  baseSeverity: "MEDIUM",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  version: "3.1",
               },
               products: [
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-6.6p1-54.18.1.x86_64",
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-askpass-gnome-6.6p1-54.18.1.x86_64",
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-fips-6.6p1-54.18.1.x86_64",
                  "SUSE Linux Enterprise Server for SAP Applications 12 SP1:openssh-helpers-6.6p1-54.18.1.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2019-04-29T06:09:11Z",
               details: "moderate",
            },
         ],
         title: "CVE-2018-15473",
      },
   ],
}


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