usn-4008-2
Vulnerability from osv_ubuntu
Published
2019-06-05 19:43
Modified
2026-04-22 07:36
Summary
apparmor update
Details

USN-4008-1 fixed multiple security issues in the Linux kernel. This update provides the corresponding changes to AppArmor policy for correctly operating under the Linux kernel with fixes for CVE-2019-11190. Without these changes, some profile transitions may be unintentionally denied due to missing mmap ('m') rules.

Original advisory details:

Robert Święcki discovered that the Linux kernel did not properly apply Address Space Layout Randomization (ASLR) in some situations for setuid elf binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid elf binary. (CVE-2019-11190)

It was discovered that a null pointer dereference vulnerability existed in the LSI Logic MegaRAID driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-11810)

It was discovered that a race condition leading to a use-after-free existed in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel. The RDS protocol is disabled via blocklist by default in Ubuntu. If enabled, a local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-11815)

Federico Manuel Bento discovered that the Linux kernel did not properly apply Address Space Layout Randomization (ASLR) in some situations for setuid a.out binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid a.out binary. (CVE-2019-11191)

As a hardening measure, this update disables a.out support.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "apparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "apparmor-docs",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "apparmor-easyprof",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "apparmor-notify",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "apparmor-profiles",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "apparmor-utils",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "dh-apparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "libapache2-mod-apparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "libapparmor-perl",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "libapparmor1",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "libpam-apparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "python-apparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "python-libapparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "python3-apparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          },
          {
            "binary_name": "python3-libapparmor",
            "binary_version": "2.10.95-0ubuntu2.11"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "apparmor",
        "purl": "pkg:deb/ubuntu/apparmor@2.10.95-0ubuntu2.11?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.10.95-0ubuntu2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.10-0ubuntu6",
        "2.10-0ubuntu7",
        "2.10-0ubuntu8",
        "2.10-0ubuntu10",
        "2.10-0ubuntu11",
        "2.10-0ubuntu12",
        "2.10-3ubuntu1",
        "2.10-3ubuntu2",
        "2.10.95-0ubuntu1",
        "2.10.95-0ubuntu2",
        "2.10.95-0ubuntu2.2",
        "2.10.95-0ubuntu2.5",
        "2.10.95-0ubuntu2.6",
        "2.10.95-0ubuntu2.7",
        "2.10.95-0ubuntu2.8",
        "2.10.95-0ubuntu2.9",
        "2.10.95-0ubuntu2.10"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-4008-1 fixed multiple security issues in the Linux kernel. This update\nprovides the corresponding changes to AppArmor policy for correctly\noperating under the Linux kernel with fixes for CVE-2019-11190. Without\nthese changes, some profile transitions may be unintentionally denied due\nto missing mmap (\u0027m\u0027) rules.\n\nOriginal advisory details:\n\n Robert \u015awi\u0119cki discovered that the Linux kernel did not properly apply\n Address Space Layout Randomization (ASLR) in some situations for setuid elf\n binaries. A local attacker could use this to improve the chances of\n exploiting an existing vulnerability in a setuid elf binary.\n (CVE-2019-11190)\n \n It was discovered that a null pointer dereference vulnerability existed in\n the LSI Logic MegaRAID driver in the Linux kernel. A local attacker could\n use this to cause a denial of service (system crash). (CVE-2019-11810)\n \n It was discovered that a race condition leading to a use-after-free existed\n in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux\n kernel. The RDS protocol is disabled via blocklist by default in Ubuntu. If\n enabled, a local attacker could use this to cause a denial of service\n (system crash) or possibly execute arbitrary code. (CVE-2019-11815)\n \n Federico Manuel Bento discovered that the Linux kernel did not properly\n apply Address Space Layout Randomization (ASLR) in some situations for\n setuid a.out binaries. A local attacker could use this to improve the\n chances of exploiting an existing vulnerability in a setuid a.out binary.\n (CVE-2019-11191)\n \n As a hardening measure, this update disables a.out support.\n",
  "id": "USN-4008-2",
  "modified": "2026-04-22T07:36:37Z",
  "published": "2019-06-05T19:43:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4008-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-11190"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "apparmor update",
  "upstream": [
    "UBUNTU-CVE-2019-11190"
  ]
}



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