Vulnerabilities > CVE-2017-1000255 - Out-of-bounds Write vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
HIGH Availability impact
NONE Summary
On Linux running on PowerPC hardware (Power8 or later) a user process can craft a signal frame and then do a sigreturn so that the kernel will take an exception (interrupt), and use the r1 value *from the signal frame* as the kernel stack pointer. As part of the exception entry the content of the signal frame is written to the kernel stack, allowing an attacker to overwrite arbitrary locations with arbitrary values. The exception handling does produce an oops, and a panic if panic_on_oops=1, but only after kernel memory has been over written. This flaw was introduced in commit: "5d176f751ee3 (powerpc: tm: Enable transactional memory (TM) lazily for userspace)" which was merged upstream into v4.9-rc1. Please note that kernels built with CONFIG_PPC_TRANSACTIONAL_MEM=n are not vulnerable.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 1 | |
| Hardware | 2 |
Common Weakness Enumeration (CWE)
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2017-C110AC0EB1.NASL description The 4.13.8 update contains a number of important fixes across the tree. ---- The 4.13.6 stable kernel update contains a number of important fixes across the tree. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2017-10-26 plugin id 104158 published 2017-10-26 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/104158 title Fedora 26 : kernel (2017-c110ac0eb1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3487-1.NASL description It was discovered that the KVM subsystem in the Linux kernel did not properly keep track of nested levels in guest page tables. A local attacker in a guest VM could use this to cause a denial of service (host OS crash) or possibly execute arbitrary code in the host OS. (CVE-2017-12188) It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-1000255) Bo Zhang discovered that the netlink wireless configuration interface in the Linux kernel did not properly validate attributes when handling certain requests. A local attacker with the CAP_NET_ADMIN could use this to cause a denial of service (system crash). (CVE-2017-12153) It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service (system crash). (CVE-2017-12154) Vitaly Mayatskikh discovered that the SCSI subsystem in the Linux kernel did not properly track reference counts when merging buffers. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2017-12190) It was discovered that the key management subsystem in the Linux kernel did not properly restrict key reads on negatively instantiated keys. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-12192) It was discovered that the ATI Radeon framebuffer driver in the Linux kernel did not properly initialize a data structure returned to user space. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-14156) ChunYu Wang discovered that the iSCSI transport implementation in the Linux kernel did not properly validate data structures. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14489) Alexander Potapenko discovered an information leak in the waitid implementation of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-14954) It was discovered that a race condition existed in the ALSA subsystem of the Linux kernel when creating and deleting a port via ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15265) Dmitry Vyukov discovered that the Floating Point Unit (fpu) subsystem in the Linux kernel did not properly handle attempts to set reserved bits in a task last seen 2020-06-01 modified 2020-06-02 plugin id 104737 published 2017-11-22 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/104737 title Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3487-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3443-2.NASL description USN-3443-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-1000255) Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14106). 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. last seen 2020-06-01 modified 2020-06-02 plugin id 103776 published 2017-10-11 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103776 title Ubuntu 16.04 LTS : linux-hwe vulnerabilities (USN-3443-2) NASL family Fedora Local Security Checks NASL id FEDORA_2017-CAFCDBDDE5.NASL description The 4.13.8 update contains a number of important fixes across the tree. ---- The 4.13.6 stable kernel update contains a number of important fixes across the tree. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2017-10-26 plugin id 104160 published 2017-10-26 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/104160 title Fedora 25 : kernel (2017-cafcdbdde5) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2017-925.NASL description Incorrect updates of uninstantiated keys crash the kernel A vulnerability was found in the key management subsystem of the Linux kernel. An update on an uninstantiated key could cause a kernel panic, leading to denial of service (DoS). (CVE-2017-15299) Memory leak when merging buffers in SCSI IO vectors It was found that in the Linux kernel through v4.14-rc5, bio_map_user_iov() and bio_unmap_user() in last seen 2020-06-01 modified 2020-06-02 plugin id 104707 published 2017-11-21 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/104707 title Amazon Linux AMI : kernel (ALAS-2017-925) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2018-0654.NASL description An update for kernel-alt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The kernel-alt packages provide the Linux kernel version 4.x. The following packages have been upgraded to a later upstream version: kernel-alt (4.14.0). (BZ#1492717) Security Fix(es) : * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor last seen 2020-06-01 modified 2020-06-02 plugin id 108942 published 2018-04-10 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108942 title RHEL 7 : kernel-alt (RHSA-2018:0654) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3443-1.NASL description It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-1000255) Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14106). 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. last seen 2020-06-01 modified 2020-06-02 plugin id 103775 published 2017-10-11 reporter Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103775 title Ubuntu 17.04 : linux, linux-raspi2 vulnerabilities (USN-3443-1) NASL family Fedora Local Security Checks NASL id FEDORA_2017-AA9927961F.NASL description The 4.13.8 update contains a number of important fixes across the tree. ---- The 4.13.6 stable update contains a number of important fixes across the tree. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2018-01-15 plugin id 105948 published 2018-01-15 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/105948 title Fedora 27 : kernel (2017-aa9927961f)
Redhat
| advisories |
| ||||
| rpms |
|