Vulnerability from csaf_suse
Published
2022-06-10 08:18
Modified
2022-06-10 08:18
Summary
Security update for grub2

Notes

Title of the patch
Security update for grub2
Description of the patch
This update for grub2 fixes the following issues: Security fixes and hardenings for boothole 3 / boothole 2022 (bsc#1198581) - CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap (bsc#1191184) - CVE-2021-3696: Fixed that a crafted PNG image could lead to out-of-bound write during huffman table handling (bsc#1191185) - CVE-2021-3697: Fixed that a crafted JPEG image could lead to buffer underflow write in the heap (bsc#1191186) - CVE-2022-28733: Fixed fragmentation math in net/ip (bsc#1198460) - CVE-2022-28734: Fixed an out-of-bound write for split http headers (bsc#1198493) - CVE-2022-28736: Fixed a use-after-free in chainloader command (bsc#1198496) - Update SBAT security contact (bsc#1193282) - Bump grub's SBAT generation to 2
Patchnames
SUSE-2022-2039,SUSE-SLE-SERVER-12-SP2-BCL-2022-2039
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: "important",
      },
      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 grub2",
            title: "Title of the patch",
         },
         {
            category: "description",
            text: "This update for grub2 fixes the following issues:\n\nSecurity fixes and hardenings for boothole 3 / boothole 2022 (bsc#1198581)\n\n- CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap (bsc#1191184)\n- CVE-2021-3696: Fixed that a crafted PNG image could lead to out-of-bound write during huffman table handling (bsc#1191185)\n- CVE-2021-3697: Fixed that a crafted JPEG image could lead to buffer underflow write in the heap (bsc#1191186)\n- CVE-2022-28733: Fixed fragmentation math in net/ip (bsc#1198460)\n- CVE-2022-28734: Fixed an out-of-bound write for split http headers (bsc#1198493)\n- CVE-2022-28736: Fixed a use-after-free in chainloader command (bsc#1198496)\n- Update SBAT security contact (bsc#1193282)\n- Bump grub's SBAT generation to 2\n",
            title: "Description of the patch",
         },
         {
            category: "details",
            text: "SUSE-2022-2039,SUSE-SLE-SERVER-12-SP2-BCL-2022-2039",
            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",
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            summary: "SUSE ratings",
            url: "https://www.suse.com/support/security/rating/",
         },
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            category: "self",
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         },
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         },
         {
            category: "self",
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         },
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            category: "self",
            summary: "SUSE Bug 1191184",
            url: "https://bugzilla.suse.com/1191184",
         },
         {
            category: "self",
            summary: "SUSE Bug 1191185",
            url: "https://bugzilla.suse.com/1191185",
         },
         {
            category: "self",
            summary: "SUSE Bug 1191186",
            url: "https://bugzilla.suse.com/1191186",
         },
         {
            category: "self",
            summary: "SUSE Bug 1193282",
            url: "https://bugzilla.suse.com/1193282",
         },
         {
            category: "self",
            summary: "SUSE Bug 1198460",
            url: "https://bugzilla.suse.com/1198460",
         },
         {
            category: "self",
            summary: "SUSE Bug 1198493",
            url: "https://bugzilla.suse.com/1198493",
         },
         {
            category: "self",
            summary: "SUSE Bug 1198496",
            url: "https://bugzilla.suse.com/1198496",
         },
         {
            category: "self",
            summary: "SUSE Bug 1198581",
            url: "https://bugzilla.suse.com/1198581",
         },
         {
            category: "self",
            summary: "SUSE CVE CVE-2021-3695 page",
            url: "https://www.suse.com/security/cve/CVE-2021-3695/",
         },
         {
            category: "self",
            summary: "SUSE CVE CVE-2021-3696 page",
            url: "https://www.suse.com/security/cve/CVE-2021-3696/",
         },
         {
            category: "self",
            summary: "SUSE CVE CVE-2021-3697 page",
            url: "https://www.suse.com/security/cve/CVE-2021-3697/",
         },
         {
            category: "self",
            summary: "SUSE CVE CVE-2022-28733 page",
            url: "https://www.suse.com/security/cve/CVE-2022-28733/",
         },
         {
            category: "self",
            summary: "SUSE CVE CVE-2022-28734 page",
            url: "https://www.suse.com/security/cve/CVE-2022-28734/",
         },
         {
            category: "self",
            summary: "SUSE CVE CVE-2022-28736 page",
            url: "https://www.suse.com/security/cve/CVE-2022-28736/",
         },
      ],
      title: "Security update for grub2",
      tracking: {
         current_release_date: "2022-06-10T08:18:50Z",
         generator: {
            date: "2022-06-10T08:18:50Z",
            engine: {
               name: "cve-database.git:bin/generate-csaf.pl",
               version: "1",
            },
         },
         id: "SUSE-SU-2022:2039-1",
         initial_release_date: "2022-06-10T08:18:50Z",
         revision_history: [
            {
               date: "2022-06-10T08:18:50Z",
               number: "1",
               summary: "Current version",
            },
         ],
         status: "final",
         version: "1",
      },
   },
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                  ],
                  category: "architecture",
                  name: "i586",
               },
               {
                  branches: [
                     {
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                     },
                     {
                        category: "product_version",
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                           product_id: "grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
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                  ],
                  category: "architecture",
                  name: "noarch",
               },
               {
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                     {
                        category: "product_version",
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                  category: "architecture",
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               },
               {
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               },
               {
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                  ],
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            ],
            category: "vendor",
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      ],
      relationships: [
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            category: "default_component_of",
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            },
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            },
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            relates_to_product_reference: "SUSE Linux Enterprise Server 12 SP2-BCL",
         },
         {
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            },
            product_reference: "grub2-x86_64-efi-2.02-115.67.2.x86_64",
            relates_to_product_reference: "SUSE Linux Enterprise Server 12 SP2-BCL",
         },
         {
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            },
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            relates_to_product_reference: "SUSE Linux Enterprise Server 12 SP2-BCL",
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   },
   vulnerabilities: [
      {
         cve: "CVE-2021-3695",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2021-3695",
            },
         ],
         notes: [
            {
               category: "general",
               text: "A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
            ],
         },
         references: [
            {
               category: "external",
               summary: "CVE-2021-3695",
               url: "https://www.suse.com/security/cve/CVE-2021-3695",
            },
            {
               category: "external",
               summary: "SUSE Bug 1191184 for CVE-2021-3695",
               url: "https://bugzilla.suse.com/1191184",
            },
            {
               category: "external",
               summary: "SUSE Bug 1203445 for CVE-2021-3695",
               url: "https://bugzilla.suse.com/1203445",
            },
            {
               category: "external",
               summary: "SUSE Bug 1205057 for CVE-2021-3695",
               url: "https://bugzilla.suse.com/1205057",
            },
            {
               category: "external",
               summary: "SUSE Bug 1227915 for CVE-2021-3695",
               url: "https://bugzilla.suse.com/1227915",
            },
         ],
         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 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 7.5,
                  baseSeverity: "HIGH",
                  vectorString: "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
                  version: "3.1",
               },
               products: [
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2022-06-10T08:18:50Z",
               details: "important",
            },
         ],
         title: "CVE-2021-3695",
      },
      {
         cve: "CVE-2021-3696",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2021-3696",
            },
         ],
         notes: [
            {
               category: "general",
               text: "A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
            ],
         },
         references: [
            {
               category: "external",
               summary: "CVE-2021-3696",
               url: "https://www.suse.com/security/cve/CVE-2021-3696",
            },
            {
               category: "external",
               summary: "SUSE Bug 1191185 for CVE-2021-3696",
               url: "https://bugzilla.suse.com/1191185",
            },
         ],
         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 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 5,
                  baseSeverity: "MEDIUM",
                  vectorString: "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L",
                  version: "3.1",
               },
               products: [
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2022-06-10T08:18:50Z",
               details: "moderate",
            },
         ],
         title: "CVE-2021-3696",
      },
      {
         cve: "CVE-2021-3697",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2021-3697",
            },
         ],
         notes: [
            {
               category: "general",
               text: "A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
            ],
         },
         references: [
            {
               category: "external",
               summary: "CVE-2021-3697",
               url: "https://www.suse.com/security/cve/CVE-2021-3697",
            },
            {
               category: "external",
               summary: "SUSE Bug 1191186 for CVE-2021-3697",
               url: "https://bugzilla.suse.com/1191186",
            },
            {
               category: "external",
               summary: "SUSE Bug 1203445 for CVE-2021-3697",
               url: "https://bugzilla.suse.com/1203445",
            },
            {
               category: "external",
               summary: "SUSE Bug 1205057 for CVE-2021-3697",
               url: "https://bugzilla.suse.com/1205057",
            },
         ],
         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 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 7.5,
                  baseSeverity: "HIGH",
                  vectorString: "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
                  version: "3.1",
               },
               products: [
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2022-06-10T08:18:50Z",
               details: "important",
            },
         ],
         title: "CVE-2021-3697",
      },
      {
         cve: "CVE-2022-28733",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2022-28733",
            },
         ],
         notes: [
            {
               category: "general",
               text: "Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
            ],
         },
         references: [
            {
               category: "external",
               summary: "CVE-2022-28733",
               url: "https://www.suse.com/security/cve/CVE-2022-28733",
            },
            {
               category: "external",
               summary: "SUSE Bug 1198460 for CVE-2022-28733",
               url: "https://bugzilla.suse.com/1198460",
            },
            {
               category: "external",
               summary: "SUSE Bug 1203445 for CVE-2022-28733",
               url: "https://bugzilla.suse.com/1203445",
            },
            {
               category: "external",
               summary: "SUSE Bug 1205057 for CVE-2022-28733",
               url: "https://bugzilla.suse.com/1205057",
            },
            {
               category: "external",
               summary: "SUSE Bug 1227915 for CVE-2022-28733",
               url: "https://bugzilla.suse.com/1227915",
            },
         ],
         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 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 8.8,
                  baseSeverity: "HIGH",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               products: [
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2022-06-10T08:18:50Z",
               details: "important",
            },
         ],
         title: "CVE-2022-28733",
      },
      {
         cve: "CVE-2022-28734",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2022-28734",
            },
         ],
         notes: [
            {
               category: "general",
               text: "Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
            ],
         },
         references: [
            {
               category: "external",
               summary: "CVE-2022-28734",
               url: "https://www.suse.com/security/cve/CVE-2022-28734",
            },
            {
               category: "external",
               summary: "SUSE Bug 1198493 for CVE-2022-28734",
               url: "https://bugzilla.suse.com/1198493",
            },
            {
               category: "external",
               summary: "SUSE Bug 1203445 for CVE-2022-28734",
               url: "https://bugzilla.suse.com/1203445",
            },
         ],
         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 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 7,
                  baseSeverity: "HIGH",
                  vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H",
                  version: "3.1",
               },
               products: [
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2022-06-10T08:18:50Z",
               details: "moderate",
            },
         ],
         title: "CVE-2022-28734",
      },
      {
         cve: "CVE-2022-28736",
         ids: [
            {
               system_name: "SUSE CVE Page",
               text: "https://www.suse.com/security/cve/CVE-2022-28736",
            },
         ],
         notes: [
            {
               category: "general",
               text: "There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.",
               title: "CVE description",
            },
         ],
         product_status: {
            recommended: [
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
               "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
            ],
         },
         references: [
            {
               category: "external",
               summary: "CVE-2022-28736",
               url: "https://www.suse.com/security/cve/CVE-2022-28736",
            },
            {
               category: "external",
               summary: "SUSE Bug 1198496 for CVE-2022-28736",
               url: "https://bugzilla.suse.com/1198496",
            },
            {
               category: "external",
               summary: "SUSE Bug 1203445 for CVE-2022-28736",
               url: "https://bugzilla.suse.com/1203445",
            },
            {
               category: "external",
               summary: "SUSE Bug 1205057 for CVE-2022-28736",
               url: "https://bugzilla.suse.com/1205057",
            },
         ],
         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 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 8.4,
                  baseSeverity: "HIGH",
                  vectorString: "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               products: [
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-i386-pc-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-snapper-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-systemd-sleep-plugin-2.02-115.67.2.noarch",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-efi-2.02-115.67.2.x86_64",
                  "SUSE Linux Enterprise Server 12 SP2-BCL:grub2-x86_64-xen-2.02-115.67.2.x86_64",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               date: "2022-06-10T08:18:50Z",
               details: "important",
            },
         ],
         title: "CVE-2022-28736",
      },
   ],
}


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This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
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