csaf_redhat - rhsa-2014

rhsa-2014_1025

Vulnerability from csaf_redhat

Published

2014-08-06 15:49

Modified

2024-09-15 21:52

Summary

Red Hat Security Advisory: kernel security and bug fix update

Notes

Topic

Updated kernel packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 6.2 Advanced Update Support. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the pppol2tp_setsockopt() and pppol2tp_getsockopt() functions in the Linux kernel's PPP over L2TP implementation handled requests with a non-SOL_PPPOL2TP socket option level. A local, unprivileged user could use this flaw to escalate their privileges on the system. (CVE-2014-4943, Important) Red Hat would like to thank Sasha Levin for reporting this issue. This update also fixes the following bug: * When a device was registered to a bus, a race condition could occur between the device being added to the list of devices of the bus and binding the device to a driver. As a result, the device could already be bound to a driver which led to a warning and incorrect reference counting, and consequently to a kernel panic on device removal. To avoid the race condition, this update adds a check to identify an already bound device. (BZ#1114409) All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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        "text": "Updated kernel packages that fix one security issue and one bug are now\navailable for Red Hat Enterprise Linux 6.2 Advanced Update Support.\n\nThe Red Hat Security Response Team has rated this update as having\nImportant security impact. A Common Vulnerability Scoring System (CVSS)\nbase score, which gives a detailed severity rating, is available from the\nCVE link in the References section.",
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        "text": "The kernel packages contain the Linux kernel, the core of any Linux\noperating system.\n\n* A flaw was found in the way the pppol2tp_setsockopt() and\npppol2tp_getsockopt() functions in the Linux kernel\u0027s PPP over L2TP\nimplementation handled requests with a non-SOL_PPPOL2TP socket option\nlevel. A local, unprivileged user could use this flaw to escalate their\nprivileges on the system. (CVE-2014-4943, Important)\n\nRed Hat would like to thank Sasha Levin for reporting this issue.\n\nThis update also fixes the following bug:\n\n* When a device was registered to a bus, a race condition could occur\nbetween the device being added to the list of devices of the bus and\nbinding the device to a driver. As a result, the device could already be\nbound to a driver which led to a warning and incorrect reference counting,\nand consequently to a kernel panic on device removal. To avoid the race\ncondition, this update adds a check to identify an already bound device.\n(BZ#1114409)\n\nAll kernel users are advised to upgrade to these updated packages, which\ncontain backported patches to correct these issues. The system must be\nrebooted for this update to take effect.",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Sasha Levin"
          ]
        }
      ],
      "cve": "CVE-2014-4943",
      "discovery_date": "2014-07-12T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1119458"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the way the pppol2tp_setsockopt() and pppol2tp_getsockopt() functions in the Linux kernel\u0027s PPP over L2TP implementation handled requests with a non-SOL_PPPOL2TP socket option level. A local, unprivileged user could use this flaw to escalate their privileges on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: net: pppol2tp: level handling in pppol2tp_[s,g]etsockopt()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue does not affect the Linux kernel packages as shipped with Red Hat\nEnterprise Linux 5 and Red Hat Enterprise MRG 2.\n\nPlease note that on Red Hat Enterprise Linux 6 pppol2tp module is not\nautomatically loaded when AF_PPPOX/PX_PROTO_OL2TP socket is created as\nRed Hat Enterprise Linux 6 lacks upstream commit 9395a09d05a23bb and default\nmodprobe configuration as shipped with module-init-tools package does not\ncontain the alias for pppol2tp protocol either. As a result, pppol2tp module\nhas to be explicitly enabled and/or loaded by the system administrator.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.2,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "products": [
            "6Server-6.2.AUS:kernel-0:2.6.32-220.54.1.el6.src",
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            "6Server-optional-6.2.AUS:python-perf-debuginfo-0:2.6.32-220.54.1.el6.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: net: pppol2tp: level handling in pppol2tp_[s,g]etsockopt()"
    }
  ]
}

cve-2014-4943

Vulnerability from cvelistv5

Published

2014-07-19 19:00

Modified

2024-08-06 11:34

Severity

Summary

The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.

References

URL	Tags
http://www.exploit-db.com/exploits/36267	exploit, x_refsource_EXPLOIT-DB
http://linux.oracle.com/errata/ELSA-2014-3047.html	x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html	vendor-advisory, x_refsource_SUSE
http://www.securitytracker.com/id/1030610	vdb-entry, x_refsource_SECTRACK
http://secunia.com/advisories/60220	third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/59790	third-party-advisory, x_refsource_SECUNIA
http://rhn.redhat.com/errata/RHSA-2014-1025.html	vendor-advisory, x_refsource_REDHAT
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf	x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html	vendor-advisory, x_refsource_SUSE
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html	vendor-advisory, x_refsource_SUSE
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html	vendor-advisory, x_refsource_SUSE
https://bugzilla.redhat.com/show_bug.cgi?id=1119458	x_refsource_CONFIRM
http://linux.oracle.com/errata/ELSA-2014-0924.html	x_refsource_CONFIRM
http://secunia.com/advisories/60393	third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/60380	third-party-advisory, x_refsource_SECUNIA
http://linux.oracle.com/errata/ELSA-2014-3048.html	x_refsource_CONFIRM
https://exchange.xforce.ibmcloud.com/vulnerabilities/94665	vdb-entry, x_refsource_XF
http://openwall.com/lists/oss-security/2014/07/17/1	mailing-list, x_refsource_MLIST
http://secunia.com/advisories/60011	third-party-advisory, x_refsource_SECUNIA
https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf	x_refsource_CONFIRM
http://www.debian.org/security/2014/dsa-2992	vendor-advisory, x_refsource_DEBIAN
http://osvdb.org/show/osvdb/109277	vdb-entry, x_refsource_OSVDB
http://secunia.com/advisories/60071	third-party-advisory, x_refsource_SECUNIA

Impacted products

Vendor	Product
n/a	n/a

Show details on NVD website