usn-2985-2
Vulnerability from osv_ubuntu
Published
2016-05-26 14:59
Modified
2026-04-22 07:36
Summary
eglibc, glibc regression
Details

USN-2985-1 fixed vulnerabilities in the GNU C Library. The fix for CVE-2014-9761 introduced a regression which affected applications that use the libm library but were not fully restarted after the upgrade. This update removes the fix for CVE-2014-9761 and a future update will be provided to address this issue.

We apologize for the inconvenience.

Original advisory details:

Martin Carpenter discovered that pt_chown in the GNU C Library did not properly check permissions for tty files. A local attacker could use this to gain administrative privileges or expose sensitive information. (CVE-2013-2207, CVE-2016-2856)

Robin Hack discovered that the Name Service Switch (NSS) implementation in the GNU C Library did not properly manage its file descriptors. An attacker could use this to cause a denial of service (infinite loop). (CVE-2014-8121)

Joseph Myers discovered that the GNU C Library did not properly handle long arguments to functions returning a representation of Not a Number (NaN). An attacker could use this to cause a denial of service (stack exhaustion leading to an application crash) or possibly execute arbitrary code. (CVE-2014-9761)

Arjun Shankar discovered that in certain situations the nss_dns code in the GNU C Library did not properly account buffer sizes when passed an unaligned buffer. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2015-1781)

Sumit Bose and Lukas Slebodnik discovered that the Name Service Switch (NSS) implementation in the GNU C Library did not handle long lines in the files databases correctly. A local attacker could use this to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-5277)

Adam Nielsen discovered that the strftime function in the GNU C Library did not properly handle out-of-range argument data. An attacker could use this to cause a denial of service (application crash) or possibly expose sensitive information. (CVE-2015-8776)

Hector Marco and Ismael Ripoll discovered that the GNU C Library allowed the pointer-guarding protection mechanism to be disabled by honoring the LD_POINTER_GUARD environment variable across privilege boundaries. A local attacker could use this to exploit an existing vulnerability more easily. (CVE-2015-8777)

Szabolcs Nagy discovered that the hcreate functions in the GNU C Library did not properly check its size argument, leading to an integer overflow. An attacker could use to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-8778)

Maksymilian Arciemowicz discovered a stack-based buffer overflow in the catopen function in the GNU C Library when handling long catalog names. An attacker could use this to cause a denial of service (application crash) or possibly execute arbitrary code. (CVE-2015-8779)

Florian Weimer discovered that the getnetbyname implementation in the GNU C Library did not properly handle long names passed as arguments. An attacker could use to cause a denial of service (stack exhaustion leading to an application crash). (CVE-2016-3075)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "eglibc-source",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-armel",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-dev-ppc64",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-pic",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-ppc64",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-prof",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "multiarch-support",
            "binary_version": "2.19-0ubuntu6.9"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.19-0ubuntu6.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "eglibc",
        "purl": "pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.9?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.19-0ubuntu6.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.17-93ubuntu4",
        "2.18-0ubuntu1",
        "2.18-0ubuntu2",
        "2.18-0ubuntu4",
        "2.18-0ubuntu5",
        "2.18-0ubuntu6",
        "2.18-0ubuntu7",
        "2.19-0ubuntu2",
        "2.19-0ubuntu3",
        "2.19-0ubuntu4",
        "2.19-0ubuntu5",
        "2.19-0ubuntu6",
        "2.19-0ubuntu6.1",
        "2.19-0ubuntu6.3",
        "2.19-0ubuntu6.4",
        "2.19-0ubuntu6.5",
        "2.19-0ubuntu6.6",
        "2.19-0ubuntu6.7",
        "2.19-0ubuntu6.8"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-2985-1 fixed vulnerabilities in the GNU C Library. The fix for\nCVE-2014-9761 introduced a regression which affected applications that\nuse the libm library but were not fully restarted after the upgrade.\nThis update removes the fix for CVE-2014-9761 and a future update\nwill be provided to address this issue.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Martin Carpenter discovered that pt_chown in the GNU C Library did not\n properly check permissions for tty files. A local attacker could use this\n to gain administrative privileges or expose sensitive information.\n (CVE-2013-2207, CVE-2016-2856)\n \n Robin Hack discovered that the Name Service Switch (NSS) implementation in\n the GNU C Library did not properly manage its file descriptors. An attacker\n could use this to cause a denial of service (infinite loop).\n (CVE-2014-8121)\n \n Joseph Myers discovered that the GNU C Library did not properly handle long\n arguments to functions returning a representation of Not a Number (NaN). An\n attacker could use this to cause a denial of service (stack exhaustion\n leading to an application crash) or possibly execute arbitrary code.\n (CVE-2014-9761)\n \n Arjun Shankar discovered that in certain situations the nss_dns code in the\n GNU C Library did not properly account buffer sizes when passed an\n unaligned buffer. An attacker could use this to cause a denial of service\n or possibly execute arbitrary code. (CVE-2015-1781)\n \n Sumit Bose and Lukas Slebodnik discovered that the Name Service\n Switch (NSS) implementation in the GNU C Library did not handle long\n lines in the files databases correctly. A local attacker could use\n this to cause a denial of service (application crash) or possibly\n execute arbitrary code. (CVE-2015-5277)\n \n Adam Nielsen discovered that the strftime function in the GNU C Library did\n not properly handle out-of-range argument data. An attacker could use this\n to cause a denial of service (application crash) or possibly expose\n sensitive information. (CVE-2015-8776)\n \n Hector Marco and Ismael Ripoll discovered that the GNU C Library allowed\n the pointer-guarding protection mechanism to be disabled by honoring the\n LD_POINTER_GUARD environment variable across privilege boundaries. A local\n attacker could use this to exploit an existing vulnerability more easily.\n (CVE-2015-8777)\n \n Szabolcs Nagy discovered that the hcreate functions in the GNU C Library\n did not properly check its size argument, leading to an integer overflow.\n An attacker could use to cause a denial of service (application crash) or\n possibly execute arbitrary code. (CVE-2015-8778)\n \n Maksymilian Arciemowicz discovered a stack-based buffer overflow in the\n catopen function in the GNU C Library when handling long catalog names. An\n attacker could use this to cause a denial of service (application crash) or\n possibly execute arbitrary code. (CVE-2015-8779)\n \n Florian Weimer discovered that the getnetbyname implementation in the GNU C\n Library did not properly handle long names passed as arguments. An attacker\n could use to cause a denial of service (stack exhaustion leading to an\n application crash). (CVE-2016-3075)\n",
  "id": "USN-2985-2",
  "modified": "2026-04-22T07:36:33Z",
  "published": "2016-05-26T14:59:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2985-2"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/1585614"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "eglibc, glibc regression",
  "upstream": []
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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