Vulnerabilities > CVE-2007-6733 - Resource Management Errors vulnerability in Linux Kernel 2.6.9
Attack vector
LOCAL Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
COMPLETE Summary
The nfs_lock function in fs/nfs/file.c in the Linux kernel 2.6.9 does not properly remove POSIX locks on files that are setgid without group-execute permission, which allows local users to cause a denial of service (BUG and system crash) by locking a file on an NFS filesystem and then changing this file's permissions, a related issue to CVE-2010-0727.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
OS | 1 |
Common Weakness Enumeration (CWE)
Nessus
NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2010-0178.NASL description Updated kernel packages that fix three security issues, address several hundred bugs, and add numerous enhancements are now available as part of the ongoing support and maintenance of Red Hat Enterprise Linux version 5. This is the fifth regular update. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * a race condition was found in the mac80211 implementation, a framework used for writing drivers for wireless devices. An attacker could trigger this flaw by sending a Delete Block ACK (DELBA) packet to a target system, resulting in a remote denial of service. Note: This issue only affected users on 802.11n networks, and that also use the iwlagn driver with Intel wireless hardware. (CVE-2009-4027, Important) * a flaw was found in the gfs2_lock() implementation. The GFS2 locking code could skip the lock operation for files that have the S_ISGID bit (set-group-ID on execution) in their mode set. A local, unprivileged user on a system that has a GFS2 file system mounted could use this flaw to cause a kernel panic. (CVE-2010-0727, Moderate) * a divide-by-zero flaw was found in the ext4 file system code. A local attacker could use this flaw to cause a denial of service by mounting a specially crafted ext4 file system. (CVE-2009-4307, Low) These updated packages also include several hundred bug fixes for and enhancements to the Linux kernel. Space precludes documenting each of these changes in this advisory and users are directed to the Red Hat Enterprise Linux 5.5 Release Notes for information on the most significant of these changes : http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/ Release_Notes/ Also, for details concerning every bug fixed in and every enhancement added to the kernel for this release, refer to the kernel chapter in the Red Hat Enterprise Linux 5.5 Technical Notes : http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/ Technical_Notes/kernel.html All Red Hat Enterprise Linux 5 users are advised to install these updated packages, which address these vulnerabilities as well as fixing the bugs and adding the enhancements noted in the Red Hat Enterprise Linux 5.5 Release Notes and Technical Notes. The system must be rebooted for this update to take effect. last seen 2020-06-01 modified 2020-06-02 plugin id 46282 published 2010-05-11 reporter This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/46282 title RHEL 5 : kernel (RHSA-2010:0178) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2010:0178. The text # itself is copyright (C) Red Hat, Inc. # include("compat.inc"); if (description) { script_id(46282); script_version ("1.33"); script_cvs_date("Date: 2019/10/25 13:36:15"); script_cve_id("CVE-2007-6733", "CVE-2009-4026", "CVE-2009-4027", "CVE-2009-4307", "CVE-2010-0727", "CVE-2010-1188"); script_bugtraq_id(37170); script_xref(name:"RHSA", value:"2010:0178"); script_name(english:"RHEL 5 : kernel (RHSA-2010:0178)"); script_summary(english:"Checks the rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Red Hat host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "Updated kernel packages that fix three security issues, address several hundred bugs, and add numerous enhancements are now available as part of the ongoing support and maintenance of Red Hat Enterprise Linux version 5. This is the fifth regular update. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * a race condition was found in the mac80211 implementation, a framework used for writing drivers for wireless devices. An attacker could trigger this flaw by sending a Delete Block ACK (DELBA) packet to a target system, resulting in a remote denial of service. Note: This issue only affected users on 802.11n networks, and that also use the iwlagn driver with Intel wireless hardware. (CVE-2009-4027, Important) * a flaw was found in the gfs2_lock() implementation. The GFS2 locking code could skip the lock operation for files that have the S_ISGID bit (set-group-ID on execution) in their mode set. A local, unprivileged user on a system that has a GFS2 file system mounted could use this flaw to cause a kernel panic. (CVE-2010-0727, Moderate) * a divide-by-zero flaw was found in the ext4 file system code. A local attacker could use this flaw to cause a denial of service by mounting a specially crafted ext4 file system. (CVE-2009-4307, Low) These updated packages also include several hundred bug fixes for and enhancements to the Linux kernel. Space precludes documenting each of these changes in this advisory and users are directed to the Red Hat Enterprise Linux 5.5 Release Notes for information on the most significant of these changes : http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/ Release_Notes/ Also, for details concerning every bug fixed in and every enhancement added to the kernel for this release, refer to the kernel chapter in the Red Hat Enterprise Linux 5.5 Technical Notes : http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/ Technical_Notes/kernel.html All Red Hat Enterprise Linux 5 users are advised to install these updated packages, which address these vulnerabilities as well as fixing the bugs and adding the enhancements noted in the Red Hat Enterprise Linux 5.5 Release Notes and Technical Notes. The system must be rebooted for this update to take effect." ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2009-4027" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2009-4307" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2010-0727" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2010-1188" ); # http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/ script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/documentation/en-us/" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2010:0178" ); script_set_attribute(attribute:"solution", value:"Update the affected packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_cwe_id(189, 362); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-PAE"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-PAE-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-doc"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-headers"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-xen-devel"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5"); script_set_attribute(attribute:"vuln_publication_date", value:"2009/12/02"); script_set_attribute(attribute:"patch_publication_date", value:"2010/03/30"); script_set_attribute(attribute:"plugin_publication_date", value:"2010/05/11"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Red Hat Local Security Checks"); script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("rpm.inc"); include("ksplice.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat"); os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat"); os_ver = os_ver[1]; if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 5.x", "Red Hat " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu); if (get_one_kb_item("Host/ksplice/kernel-cves")) { rm_kb_item(name:"Host/uptrack-uname-r"); cve_list = make_list("CVE-2007-6733", "CVE-2009-4026", "CVE-2009-4027", "CVE-2009-4307", "CVE-2010-0727", "CVE-2010-1188"); if (ksplice_cves_check(cve_list)) { audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2010:0178"); } else { __rpm_report = ksplice_reporting_text(); } } yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo"); if (!empty_or_null(yum_updateinfo)) { rhsa = "RHSA-2010:0178"; yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa); if (!empty_or_null(yum_report)) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : yum_report ); exit(0); } else { audit_message = "affected by Red Hat security advisory " + rhsa; audit(AUDIT_OS_NOT, audit_message); } } else { flag = 0; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-PAE-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-PAE-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-debug-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-debug-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-debug-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-debug-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-debug-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-debug-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", reference:"kernel-doc-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i386", reference:"kernel-headers-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-headers-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-headers-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-kdump-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"s390x", reference:"kernel-kdump-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-xen-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-xen-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"i686", reference:"kernel-xen-devel-2.6.18-194.el5")) flag++; if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"kernel-xen-devel-2.6.18-194.el5")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : rpm_report_get() + redhat_report_package_caveat() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel / kernel-PAE / kernel-PAE-devel / kernel-debug / etc"); } }
NASL family SuSE Local Security Checks NASL id SUSE9_12636.NASL description This update fixes various security issues and some bugs in the SUSE Linux Enterprise 9 kernel. The following security issues were fixed : - A crafted NFS write request might have caused a buffer overwrite, potentially causing a kernel crash. (CVE-2010-2521) - The x86_64 copy_to_user implementation might have leaked kernel memory depending on specific user buffer setups. (CVE-2008-0598) - drivers/net/r8169.c in the r8169 driver in the Linux kernel did not properly check the size of an Ethernet frame that exceeds the MTU, which allows remote attackers to (1) cause a denial of service (temporary network outage) via a packet with a crafted size, in conjunction with certain packets containing A characters and certain packets containing E characters; or (2) cause a denial of service (system crash) via a packet with a crafted size, in conjunction with certain packets containing last seen 2020-06-01 modified 2020-06-02 plugin id 48901 published 2010-08-27 reporter This script is Copyright (C) 2010-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/48901 title SuSE9 Security Update : Linux kernel (YOU Patch Number 12636)
Redhat
advisories |
|
Seebug
bulletinFamily | exploit |
description | CVE(CAN) ID: CVE-2007-6733 Linux Kernel是开放源码操作系统Linux所使用的内核。 Linux Kernel的fs/nfs/file.c文件中的nfs_lock函数没有正确的删除对setgid未设置group-execute权限文件的 POSIX锁定,这允许本地用户通过在NSF文件系统上锁定文件然后再更改该文件的权限导致系统崩溃。 Linux kernel 2.6.9 厂商补丁: Linux ----- 目前厂商已经发布了升级补丁以修复这个安全问题,请到厂商的主页下载: http://lkml.org/lkml/2005/12/21/334 |
id | SSV:19298 |
last seen | 2017-11-19 |
modified | 2010-03-19 |
published | 2010-03-19 |
reporter | Root |
title | Linux Kernel nfs_lock函数本地拒绝服务漏洞 |