Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol (PPP) when used with the Layer Two Tunneling Protocol (L2TP).
A local user could exploit this flaw to gain administrative privileges. (CVE-2014-4943)

Michael S. Tsirkin discovered an information leak in the Linux kernel's segmentation of skbs when using the zerocopy feature of vhost-net. A local attacker could exploit this flaw to gain potentially sensitive information from kernel memory. (CVE-2014-0131)

An flaw was discovered in the Linux kernel's audit subsystem when auditing certain syscalls. A local attacker could exploit this flaw to obtain potentially sensitive single-bit values from kernel memory or cause a denial of service (OOPS). (CVE-2014-3917)

A flaw was discovered in the Linux kernel's implementation of user namespaces with respect to inode permissions. A local user could exploit this flaw by creating a user namespace to gain administrative privileges. (CVE-2014-4014)

Don Bailey discovered a flaw in the LZO decompress algorithm used by the Linux kernel. An attacker could exploit this flaw to cause a denial of service (memory corruption or OOPS). (CVE-2014-4608)

Don Bailey and Ludvig Strigeus discovered an integer overflow in the Linux kernel's implementation of the LZ4 decompression algorithm, when used by code not complying with API limitations. An attacker could exploit this flaw to cause a denial of service (memory corruption) or possibly other unspecified impact. (CVE-2014-4611).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the way the Linux kernel's futex     subsystem handled the requeuing of certain Priority     Inheritance (PI) futexes. A local, unprivileged user     could use this flaw to escalate their privileges on the     system.(CVE-2014-3153)

  - An out-of-bounds write flaw was found in the way the     Apple Magic Mouse/Trackpad multi-touch driver handled     Human Interface Device (HID) reports with an invalid     size. An attacker with physical access to the system     could use this flaw to crash the system or,     potentially, escalate their privileges on the     system.(CVE-2014-3181)

  - An out-of-bounds read flaw was found in the way the     Logitech Unifying receiver driver handled HID reports     with an invalid device_index value. An attacker with     physical access to the system could use this flaw to     crash the system or, potentially, escalate their     privileges on the system.(CVE-2014-3182)

  - Multiple out-of-bounds write flaws were found in the     way the Cherry Cymotion keyboard driver, KYE/Genius     device drivers, Logitech device drivers, Monterey     Genius KB29E keyboard driver, Petalynx Maxter remote     control driver, and Sunplus wireless desktop driver     handled HID reports with an invalid report descriptor     size. An attacker with physical access to the system     could use either of these flaws to write data past an     allocated memory buffer.(CVE-2014-3184)

  - A memory corruption flaw was found in the way the USB     ConnectTech WhiteHEAT serial driver processed     completion commands sent via USB Request Blocks     buffers. An attacker with physical access to the system     could use this flaw to crash the system or,     potentially, escalate their privileges on the     system.(CVE-2014-3185)

  - It was found that Linux kernel's ptrace subsystem did     not properly sanitize the address-space-control bits     when the program-status word (PSW) was being set. On     IBM S/390 systems, a local, unprivileged user could use     this flaw to set address-space-control bits to the     kernel space, and thus gain read and write access to     kernel memory.(CVE-2014-3534)

  - A flaw was found in the way the Linux kernel's     kvm_iommu_map_pages() function handled IOMMU mapping     failures. A privileged user in a guest with an assigned     host device could use this flaw to crash the     host.(CVE-2014-3601)

  - It was found that KVM's Write to Model Specific     Register (WRMSR) instruction emulation would write     non-canonical values passed in by the guest to certain     MSRs in the host's context. A privileged guest user     could use this flaw to crash the host.(CVE-2014-3610)

  - A race condition flaw was found in the way the Linux     kernel's KVM subsystem handled PIT (Programmable     Interval Timer) emulation. A guest user who has access     to the PIT I/O ports could use this flaw to crash the     host.(CVE-2014-3611)

  - A flaw was found in the way the Linux kernel's keys     subsystem handled the termination condition in the     associative array garbage collection functionality. A     local, unprivileged user could use this flaw to crash     the system.(CVE-2014-3631)

  - It was found that the Linux kernel's KVM subsystem did     not handle the VM exits gracefully for the invept     (Invalidate Translations Derived from EPT)     instructions. On hosts with an Intel processor and     invept VM exit support, an unprivileged guest user     could use these instructions to crash the     guest.(CVE-2014-3645)

  - It was found that the Linux kernel's KVM subsystem did     not handle the VM exits gracefully for the invvpid     (Invalidate Translations Based on VPID) instructions.
    On hosts with an Intel processor and invppid VM exit     support, an unprivileged guest user could use these     instructions to crash the guest.(CVE-2014-3646)

  - A flaw was found in the way the Linux kernel's KVM     subsystem handled non-canonical addresses when     emulating instructions that change the RIP (for     example, branches or calls). A guest user with access     to an I/O or MMIO region could use this flaw to crash     the guest.(CVE-2014-3647)

  - A flaw was found in the way the Linux kernel's Stream     Control Transmission Protocol (SCTP) implementation     handled malformed Address Configuration Change Chunks     (ASCONF). A remote attacker could use either of these     flaws to crash the system.(CVE-2014-3673)

  - A flaw was found in the way the Linux kernel's Stream     Control Transmission Protocol (SCTP) implementation     handled duplicate Address Configuration Change Chunks     (ASCONF). A remote attacker could use either of these     flaws to crash the system.(CVE-2014-3687)

  - A flaw was found in the way the Linux kernel's Stream     Control Transmission Protocol (SCTP) implementation     handled the association's output queue. A remote     attacker could send specially crafted packets that     would cause the system to use an excessive amount of     memory, leading to a denial of service.(CVE-2014-3688)

  - It was found that the Linux kernel's KVM implementation     did not ensure that the host CR4 control register value     remained unchanged across VM entries on the same     virtual CPU. A local, unprivileged user could use this     flaw to cause a denial of service on the     system.(CVE-2014-3690)

  - An out-of-bounds memory access flaw was found in the     Linux kernel's system call auditing implementation. On     a system with existing audit rules defined, a local,     unprivileged user could use this flaw to leak kernel     memory to user space or, potentially, crash the     system.(CVE-2014-3917)

  - A flaw was found in the way Linux kernel's Transparent     Huge Pages (THP) implementation handled non-huge page     migration. A local, unprivileged user could use this     flaw to crash the kernel by migrating transparent     hugepages.(CVE-2014-3940)

  - The capabilities implementation in the Linux kernel     before 3.14.8 does not properly consider that     namespaces are inapplicable to inodes, which allows     local users to bypass intended chmod restrictions by     first creating a user namespace, as demonstrated by     setting the setgid bit on a file with group ownership     of root.(CVE-2014-4014)

  - An information leak flaw was found in the RAM Disks     Memory Copy (rd_mcp) backend driver of the iSCSI Target     subsystem of the Linux kernel. A privileged user could     use this flaw to leak the contents of kernel memory to     an iSCSI initiator remote client.(CVE-2014-4027)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

3.14.8 稳定更新包含一系列重要的跨树补丁。

请注意，Tenable Network Security 已直接从 Fedora 安全公告中提取上述描述块。Tenable 已尝试在不引入其他问题的情况下尽可能进行了自动整理和排版。

远程 Ubuntu 14.04 LTS 主机上安装的一个程序包受到 USN-2337-1 公告中提及的多个漏洞影响。

  - 在 3.14.1 及之前版本的 Linux 内核中，virt/kvm/ioapic.c 中的 ioapic_deliver 函数未正确验证 kvm_irq_delivery_to_apic 返回值，从而允许客户机操作系统用户通过 I/O APIC 的重定向表中的构建条目造成拒绝服务（主机操作系统崩溃）。注意：在漏洞公布之前，受影响的代码已经移动到 ioapic_service 函数。(CVE-2014-0155)

  - 在 3.14.1 及之前的 Linux 内核中，Netlink 实现未提供用于根据套接字的打开者对套接字操作进行授权的机制，从而允许本地用户通过使用 setuid 程序的 (1) stdout 或 (2) stderr 的 Netlink 套接字来绕过预期访问限制并修改网络配置。(CVE-2014-0181)

  - 在 3.15.1 及之前的 Linux 内核中 fs/aio.c 中 aio_read_events_ring 函数中的数组索引错误允许本地用户通过大型 head 值来获得内核内存中的敏感信息。
    (CVE-2014-0206)

  - 在 3.14.8 之前的 Linux 内核中，功能实现未正确地考虑命名空间不适用于 inode，允许本地用户通过首先创建用户命名空间以绕过预定的 chmod 限制，以 root 的组所有权在文件上设置 setgid 位即为一例。(CVE-2014-4014)

  - 在 3.14 之前的 Linux 内核中，drivers/target/target_core_rd.c 中的 rd_build_device_space 函数未正确初始化特定数据结构，使本地用户可通过利用对 SCSI 发起程序的访问权限来从 ramdisk_mcp 内存获取敏感信息。(CVE-2014-4027)

  - 到 3.15.1 为止的 Linux 内核中的 mm/shmem.c 没有正确实现范围通知和打孔之间的交互，使得本地用户可通过使用 mmap 系统调用来访问漏洞，从而造成拒绝服务 (i_mutex hold)，通过阻止完成 (1) MADV_REMOVE madvise 调用或 (2) FALLOC_FL_PUNCH_HOLE fallocate 调用来干扰预期的 shmem 活动可证实这一点。
    (CVE-2014-4171)

  - 启用 syscall 审计并设置 sep CPU 功能标记之后，本地用户可利用 32 位 x86 平台上 3.15.1 及之前版本的 Linux 内核中的 arch/x86/kernel/entry_32.S，通过无效的 syscall 编号造成拒绝服务（OOPS 和系统崩溃），编号 1000 即为一例。(CVE-2014-4508)

  - 在 3.15.2 之前版本的 Linux 内核的 ALSA 控制实现中，sound/core/control.c 的 snd_ctl_elem_user_tlv 函数的 tlv 处理程序功能中存在争用条件，本地用户可利用 /dev/snd/controlCX 访问从内核内存获取敏感信息。
    (CVE-2014-4652)

  - 在 3.15.2 之前版本的 Linux 内核中，ALSA 控制实现中的 sound/core/control.c 不确保拥有读/写锁定，本地用户可通过利用 /dev/snd/controlCX 访问造成拒绝服务（释放后使用），并且从内核内存获取敏感信息。
    (CVE-2014-4653)

  - 在 3.15.2 之前的 Linux 内核的 ALSA 控制实现中，sound/core/control.c 中的 snd_ctl_elem_add 函数没有检查 SNDRV_CTL_IOCTL_ELEM_REPLACE 命令的授权，这允许本地用户通过利用 ioctl 调用的 /dev/snd/controlCX 访问删除内核控件并造成拒绝服务（释放后使用和系统崩溃）。(CVE-2014-4654)

  - 在 3.15.2 之前的 Linux 内核的 ALSA 控制实现中，sound/core/control.c 中的 snd_ctl_elem_add 函数没有正确维护 user_ctl_count 值，这允许本地用户利用大量 SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl 调用的 /dev/snd/controlCX 访问造成拒绝服务（整数溢出和限制绕过）。(CVE-2014-4655)

  - 在 3.15.2 之前的 Linux 内核的 ALSA 控制实现中，sound/core/control.c 中存在多个整数溢出，允许本地用户利用 /dev/snd/controlCX 访问造成拒绝服务，此漏洞与 (1) snd_ctl_add 函数中的索引值和 (2) snd_ctl_remove_numid_conflict 函数中的 numid 值有关。(CVE-2014-4656)

  - 在 3.15.2 之前的 Linux 内核中，net/sctp/associola.c 中的 sctp_association_free 函数没有正确管理特定的 backlog 值，这允许远程攻击者通过构建的 SCTP 数据包造成拒绝服务（套接字中断）。(CVE-2014-4667)

  - 在 3.15.8 之前的 Linux 内核中，fs/namei.c in 的 mountpoint_last 函数在尝试结合符号链接使用 umount 系统调用期间未正确维护某个引用计数，这允许本地用户通过 umount 程序造成拒绝服务（内存消耗或释放后使用），或可能产生其他不明影响。(CVE-2014-5045)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

启用 syscall 审计并设置 sep CPU 功能标记之后，32 位 x86 平台上 3.15.1 及更早版本的 Linux 内核中的 arch/x86/kernel/entry_32.S 允许本地用户通过无效的 syscall 编号造成拒绝服务（OOPS 和系统崩溃），这一点已由编号 1000 证实。

3.15.1 及之前版本的 Linux 内核中 fs/aio.c 中 aio_read_events_ring 函数中的数组索引错误允许本地用户通过大型 head 值来获得内核内存中的敏感信息。

在低于 3.14.8 版本的 Linux 内核中的功能实现未正确地考虑命名空间不适用于 inode，允许本地用户通过首先创建用户命名空间以绕过预定的 chmod 限制，以 root 的组所有权在文件上设置 setgid 位即为一例。

**存在争议** 3.15.2 之前的 Linux 内核中 LZO 解压缩器中 lib/lzo/lzo1x_decompress_safe.c 中的 lzo1x_decompress_safe 函数中存在多种整数溢出，允许上下文有关的攻击者通过构建的 Literal Run 造成拒绝服务（内存损坏）。注意：LZO 算法的作者表示“Linux 内核
*不* 受影响；这是媒体炒作。”

据 Sasha Levin 报告，与第二层隧道协议 (L2TP) 配合使用时，Linux 内核的点对点协议 (PPP) 中存在缺陷。
本地用户可利用此缺陷获得管理权限。(CVE-2014-4943)

Michael S. Tsirkin 发现在使用 vhost-net 的 zerocopy 功能时，Linux 内核的 skbs 分段中存在信息泄漏。本地攻击者可利用此缺陷获取内核内存中的潜在敏感信息。(CVE-2014-0131)

Salva Peiró发现 Linux 内核的 media- 设备驱动程序中存在信息泄漏。本地攻击者可以利用此缺陷获取内核内存中的敏感信息。(CVE-2014-1739)

审计某些 syscall 时，在 Linux 内核的审计子系统中发现一个缺陷。本地攻击者可利用此缺陷获取内核内存中的潜在敏感单位值或造成拒绝服务 (OOPS)。(CVE-2014-3917)

在关于 inode 权限的用户命名空间的 Linux 内核的实现中发现一个缺陷。本地用户可以通过创建用户命名空间来利用此缺陷，从而获取管理权限。(CVE-2014-4014)

在 Linux 内核的 iSCSI 目标子系统的 rd_mcp 后端中发现信息泄漏。本地用户可以利用此缺陷，通过利用对 SCSI 发起程序的访问权限来获取 ramdisk_mcp 内存中的敏感信息。(CVE-2014-4027)

Don Bailey 在 Linux 内核使用的 LZO 解压缩算法中发现一个缺陷。攻击者可利用此缺陷造成拒绝服务（内存损坏或 OOPS）。(CVE-2014-4608)。

据 Sasha Levin 报告，与第二层隧道协议 (L2TP) 配合使用时，Linux 内核的点对点协议 (PPP) 中存在缺陷。
本地用户可利用此缺陷获得管理权限。(CVE-2014-4943)

Michael S. Tsirkin 发现在使用 vhost-net 的 zerocopy 功能时，Linux 内核的 skbs 分段中存在信息泄漏。本地攻击者可利用此缺陷获取内核内存中的潜在敏感信息。(CVE-2014-0131)

审计某些 syscall 时，在 Linux 内核的审计子系统中发现一个缺陷。本地攻击者可利用此缺陷获取内核内存中的潜在敏感单位值或造成拒绝服务 (OOPS)。(CVE-2014-3917)

在关于 inode 权限的用户命名空间的 Linux 内核的实现中发现一个缺陷。本地用户可以通过创建用户命名空间来利用此缺陷，从而获取管理权限。(CVE-2014-4014)

Don Bailey 在 Linux 内核使用的 LZO 解压缩算法中发现一个缺陷。攻击者可利用此缺陷造成拒绝服务（内存损坏或 OOPS）。(CVE-2014-4608)

Don Bailey 和 Ludvig Strigeus 发现，当由不符合 API 限制的代码使用时，LZ4 解压缩算法的 Linux 内核的实现中存在整数溢出。攻击者可利用此缺陷造成拒绝服务（内存损坏）或可能造成其他不明影响。(CVE-2014-4611)。

ID	Name	Product	Family	Published	Updated	Severity
76566	Ubuntu 12.04 LTS : linux-lts-saucy vulnerabilities (USN-2287-1)	Nessus	Ubuntu Local Security Checks	7/17/2014	1/19/2021	high
124804	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1480)	Nessus	Huawei Local Security Checks	5/13/2019	7/4/2024	high
76133	Fedora 20：kernel-3.14.8-200.fc20 (2014-7430)	Nessus	Fedora Local Security Checks	6/19/2014	1/11/2021	medium
77492	Ubuntu 14.04 LTS：Linux 内核漏洞 (USN-2337-1)	Nessus	Ubuntu Local Security Checks	9/3/2014	8/28/2024	medium
78311	Amazon Linux AMI：内核 (ALAS-2014-368)	Nessus	Amazon Linux Local Security Checks	10/12/2014	8/18/2020	high
76564	Ubuntu 12.04 LTS：linux-lts-quantal 漏洞 (USN-2285-1)	Nessus	Ubuntu Local Security Checks	7/17/2014	1/19/2021	high
76566	Ubuntu 12.04 LTS：linux-lts-saucy 漏洞 (USN-2287-1)	Nessus	Ubuntu Local Security Checks	7/17/2014	1/19/2021	high

Detections

Analytics

Plugins Search

high

high

medium

medium

high

high

high