{
  "threat_severity" : "Important",
  "public_date" : "2018-04-20T00:00:00Z",
  "bugzilla" : {
    "description" : "zlib: A flaw found in zlib when compressing (not decompressing) certain inputs",
    "id" : "2067945",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2067945"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.2",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-119",
  "details" : [ "zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.", "An out-of-bounds access flaw was found in zlib, which allows memory corruption when deflating (ex: when compressing) if the input has many distant matches. For some rare inputs with a large number of distant matches (crafted payloads), the buffer into which the compressed or deflated data is written can overwrite the distance symbol table which it overlays. This issue results in corrupted output due to invalid distances, which leads to out-of-bound access, corrupting the memory and potentially crashing the application." ],
  "statement" : "This bug was introduced in zlib v1.2.2.2 through zlib v1.2.11, with the addition of the Z_FIXED option, which forces the use of fixed Huffman codes, rather than dynamic Huffman codes, allowing for a simpler decoder for special applications.\nThis bug is difficult to trigger, as Z_FIXED is usually only used in special circumstances.\nRsync does the compression in-transit using zlib. As rsync uses vulnerable zlib v1.2.8 package, which incorrectly handles memory when performing certain zlib compressing or deflating operations. This results in rsync to crash.\nNote - The issue wasn't publicly labelled as security vulnerability until 2022, but the fix was public since 2018.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6 Extended Lifecycle Support",
    "release_date" : "2022-05-11T00:00:00Z",
    "advisory" : "RHSA-2022:2214",
    "cpe" : "cpe:/o:redhat:rhel_els:6",
    "package" : "zlib-0:1.2.3-31.el6_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2022-05-11T00:00:00Z",
    "advisory" : "RHSA-2022:2213",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "zlib-0:1.2.7-20.el7_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Advanced Update Support",
    "release_date" : "2023-02-28T00:00:00Z",
    "advisory" : "RHSA-2023:0976",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.4",
    "package" : "zlib-0:1.2.7-17.el7_4.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)",
    "release_date" : "2023-02-28T00:00:00Z",
    "advisory" : "RHSA-2023:0975",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.6",
    "package" : "zlib-0:1.2.7-18.el7_6.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Advanced Update Support",
    "release_date" : "2023-02-28T00:00:00Z",
    "advisory" : "RHSA-2023:0943",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.7",
    "package" : "zlib-0:1.2.7-18.el7_7.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Telco Extended Update Support",
    "release_date" : "2023-02-28T00:00:00Z",
    "advisory" : "RHSA-2023:0943",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.7",
    "package" : "zlib-0:1.2.7-18.el7_7.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions",
    "release_date" : "2023-02-28T00:00:00Z",
    "advisory" : "RHSA-2023:0943",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.7",
    "package" : "zlib-0:1.2.7-18.el7_7.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-11-08T00:00:00Z",
    "advisory" : "RHSA-2022:7813",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8::crb",
    "package" : "mingw-zlib-0:1.2.8-10.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-04-28T00:00:00Z",
    "advisory" : "RHSA-2022:1642",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "zlib-0:1.2.11-18.el8_5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-05-11T00:00:00Z",
    "advisory" : "RHSA-2022:2201",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "rsync-0:3.1.3-14.el8_6.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions",
    "release_date" : "2022-04-26T00:00:00Z",
    "advisory" : "RHSA-2022:1591",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.1",
    "package" : "zlib-0:1.2.11-11.el8_1.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions",
    "release_date" : "2022-05-11T00:00:00Z",
    "advisory" : "RHSA-2022:2197",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.1",
    "package" : "rsync-0:3.1.3-6.el8_1.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2022-05-02T00:00:00Z",
    "advisory" : "RHSA-2022:1661",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.2",
    "package" : "zlib-0:1.2.11-17.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2022-05-11T00:00:00Z",
    "advisory" : "RHSA-2022:2192",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.2",
    "package" : "rsync-0:3.1.3-7.el8_2.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2022-05-11T00:00:00Z",
    "advisory" : "RHSA-2022:2198",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.4",
    "package" : "rsync-0:3.1.3-12.el8_4.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2022-05-31T00:00:00Z",
    "advisory" : "RHSA-2022:4845",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.4",
    "package" : "zlib-0:1.2.11-18.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-05-17T00:00:00Z",
    "advisory" : "RHSA-2022:4584",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "zlib-0:1.2.11-31.el9_0.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-05-18T00:00:00Z",
    "advisory" : "RHSA-2022:4592",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "rsync-0:3.2.3-9.el9_0.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-11-15T00:00:00Z",
    "advisory" : "RHSA-2022:8420",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9::crb",
    "package" : "mingw-zlib-0:1.2.12-2.el9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-05-17T00:00:00Z",
    "advisory" : "RHSA-2022:4584",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "zlib-0:1.2.11-31.el9_0.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-05-18T00:00:00Z",
    "advisory" : "RHSA-2022:4592",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "rsync-0:3.2.3-9.el9_0.1"
  }, {
    "product_name" : "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7",
    "release_date" : "2022-07-01T00:00:00Z",
    "advisory" : "RHSA-2022:5439",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7::hypervisor",
    "package" : "redhat-virtualization-host-0:4.3.23-20220622.0.el7_9"
  }, {
    "product_name" : "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
    "release_date" : "2022-06-03T00:00:00Z",
    "advisory" : "RHSA-2022:4896",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4.4::el8",
    "package" : "redhat-virtualization-host-0:4.5.0-202205291010_8.6"
  }, {
    "product_name" : "Text-Only JBCS",
    "release_date" : "2022-10-26T00:00:00Z",
    "advisory" : "RHSA-2022:7144",
    "cpe" : "cpe:/a:redhat:jboss_core_services:1",
    "package" : "zlib"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2018-25032\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-25032" ],
  "name" : "CVE-2018-25032",
  "csaw" : false
}