Vulnerabilities > CVE-2017-7477 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
HIGH Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Heap-based buffer overflow in drivers/net/macsec.c in the MACsec module in the Linux kernel through 4.10.12 allows attackers to cause a denial of service or possibly have unspecified other impact by leveraging the use of a MAX_SKB_FRAGS+1 size in conjunction with the NETIF_F_FRAGLIST feature, leading to an error in the skb_to_sgvec function.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2017-1615.NASL description An update for kernel 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 packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * A flaw was found in the way Linux kernel allocates heap memory to build the scattergather list from a fragment list(skb_shinfo(skb)->frag_list) in the socket buffer(skb_buff). The heap overflow occurred if last seen 2020-06-01 modified 2020-06-02 plugin id 101120 published 2017-06-30 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101120 title CentOS 7 : kernel (CESA-2017:1615) NASL family Fedora Local Security Checks NASL id FEDORA_2017-0AA0F69E0C.NASL description The 4.10.13 stable kernel update contains a number of important fixes across the tree. ---- The 4.10.12 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 2017-05-05 plugin id 99987 published 2017-05-05 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/99987 title Fedora 24 : kernel (2017-0aa0f69e0c) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0174.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0174 for details. last seen 2020-06-05 modified 2017-12-14 plugin id 105248 published 2017-12-14 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/105248 title OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0174) (BlueBorne) (Dirty COW) (Stack Clash) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2017-1615.NASL description An update for kernel 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 packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * A flaw was found in the way Linux kernel allocates heap memory to build the scattergather list from a fragment list(skb_shinfo(skb)->frag_list) in the socket buffer(skb_buff). The heap overflow occurred if last seen 2020-06-01 modified 2020-06-02 plugin id 101101 published 2017-06-29 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101101 title RHEL 7 : kernel (RHSA-2017:1615) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2017-1616.NASL description An update for kernel-rt 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es) : * A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult. (CVE-2017-1000364, Important) * A flaw was found in the way Linux kernel allocates heap memory to build the scattergather list from a fragment list(skb_shinfo(skb)->frag_list) in the socket buffer(skb_buff). The heap overflow occurred if last seen 2020-06-01 modified 2020-06-02 plugin id 101102 published 2017-06-29 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101102 title RHEL 7 : kernel-rt (RHSA-2017:1616) (Stack Clash) NASL family Virtuozzo Local Security Checks NASL id VIRTUOZZO_VZA-2017-063.NASL description According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - The NFSv4 server in the Linux kernel compiled with CONFIG_NFSD_PNFS enabled does not properly validate layout type when processing NFSv4 pNFS LAYOUTGET and GETDEVICEINFO operands. The attack payload fits to single one-way UDP packet. The provided input value is used for array dereferencing. This may lead to a remote DoS of [knfsd] and so to a soft-lockup of a whole system. - A flaw was found in the way Linux kernel allocates heap memory to build the scattergather list from a fragment list(skb_shinfo(skb)->frag_list) in the socket buffer(skb_buff). The heap overflow occurred if last seen 2020-06-01 modified 2020-06-02 plugin id 101234 published 2017-07-06 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101234 title Virtuozzo 7 : readykernel-patch (VZA-2017-063) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0126.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0126 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 102064 published 2017-07-31 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102064 title OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0126) (Stack Clash) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-1842-1.NASL description The remote Oracle Linux host is missing a security update for the kernel package(s). last seen 2020-06-01 modified 2020-06-02 plugin id 102511 published 2017-08-16 reporter This script is Copyright (C) 2017-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/102511 title Oracle Linux 7 : kernel (ELSA-2017-1842-1) (Stack Clash) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-3595.NASL description The remote Oracle Linux host is missing a security update for the Unbreakable Enterprise kernel package(s). last seen 2020-06-01 modified 2020-06-02 plugin id 102059 published 2017-07-31 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102059 title Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3595) (Stack Clash) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0145.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0145 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 102774 published 2017-08-25 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102774 title OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0145) (Stack Clash) NASL family Scientific Linux Local Security Checks NASL id SL_20170628_KERNEL_ON_SL7_X.NASL description Security Fix(es) : - A flaw was found in the way Linux kernel allocates heap memory to build the scattergather list from a fragment list(skb_shinfo(skb)->frag_list) in the socket buffer(skb_buff). The heap overflow occurred if last seen 2020-03-18 modified 2017-06-29 plugin id 101105 published 2017-06-29 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/101105 title Scientific Linux Security Update : kernel on SL7.x x86_64 (20170628) NASL family Fedora Local Security Checks NASL id FEDORA_2017-9B50E28441.NASL description Linux 4.11 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 2017-07-17 plugin id 101687 published 2017-07-17 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/101687 title Fedora 26 : kernel (2017-9b50e28441) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3292-2.NASL description USN-3292-1 fixed a vulnerability in the Linux kernel for Ubuntu 16.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.10 for Ubuntu 16.04 LTS. Jason Donenfeld discovered a heap overflow in the MACsec module in the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. 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 100254 published 2017-05-17 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/100254 title Ubuntu 16.04 LTS : linux-hwe vulnerability (USN-3292-2) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-1615.NASL description From Red Hat Security Advisory 2017:1615 : An update for kernel 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 packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es) : * A flaw was found in the way Linux kernel allocates heap memory to build the scattergather list from a fragment list(skb_shinfo(skb)->frag_list) in the socket buffer(skb_buff). The heap overflow occurred if last seen 2020-06-01 modified 2020-06-02 plugin id 101139 published 2017-06-30 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101139 title Oracle Linux 7 : kernel (ELSA-2017-1615) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1531.NASL description According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - Use-after-free vulnerability in drivers/net/tun.c in the Linux kernel through 3.11.1 allows local users to gain privileges by leveraging the CAP_NET_ADMIN capability and providing an invalid tuntap interface name in a TUNSETIFF ioctl call.(CVE-2013-4343i1/4%0 - It was found that when the gcc stack protector was enabled, reading the /proc/keys file could cause a panic in the Linux kernel due to stack corruption. This happened because an incorrect buffer size was used to hold a 64-bit timeout value rendered as weeks.(CVE-2016-7042i1/4%0 - A flaw was found in the Linux kernel that fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode. This allows local users to cause a denial of service by modifying a certain e_cpos field.(CVE-2017-18224i1/4%0 - The sctp_v6_create_accept_sk function in net/sctp/ipv6.c in the Linux kernel mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890. An unprivileged local user could use this flaw to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.(CVE-2017-9075i1/4%0 - In the function sbusfb_ioctl_helper() in drivers/video/fbdev/sbuslib.c in the Linux kernel, up to and including 4.15, an integer signedness error allows arbitrary information leakage for the FBIOPUTCMAP_SPARC and FBIOGETCMAP_SPARC commands.(CVE-2018-6412i1/4%0 - A race condition flaw was found in the way the Linux kernel last seen 2020-03-19 modified 2019-05-14 plugin id 124984 published 2019-05-14 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124984 title EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1531) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3292-1.NASL description Jason Donenfeld discovered a heap overflow in the MACsec module in the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. 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 100253 published 2017-05-17 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/100253 title Ubuntu 16.10 : linux, linux-raspi2 vulnerability (USN-3292-1) NASL family Fedora Local Security Checks NASL id FEDORA_2017-17D1C05236.NASL description The 4.10.13 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 2017-05-02 plugin id 99923 published 2017-05-02 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/99923 title Fedora 25 : kernel (2017-17d1c05236) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-1615-1.NASL description Description of changes: - [3.10.0-514.26.1.0.1.el7.OL7] - [ipc] ipc/sem.c: bugfix for semctl(,,GETZCNT) (Manfred Spraul) [orabug 22552377] - Oracle Linux certificates (Alexey Petrenko) - Oracle Linux RHCK Module Signing Key was compiled into kernel (olkmod_signing_key.x509)(<A HREF= last seen 2020-06-01 modified 2020-06-02 plugin id 101138 published 2017-06-30 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101138 title Oracle Linux 7 : kernel (ELSA-2017-1615-1) (Stack Clash) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-3589.NASL description Description of changes: kernel-uek [4.1.12-94.3.8.el7uek] - macsec: dynamically allocate space for sglist (Jason A. Donenfeld) [Orabug: 26368162] {CVE-2017-7477} - macsec: avoid heap overflow in skb_to_sgvec (Jason A. Donenfeld) [Orabug: 26368162] {CVE-2017-7477} - nfsd: check for oversized NFSv2/v3 arguments (J. Bruce Fields) [Orabug: 26366988] {CVE-2017-7645} last seen 2020-06-01 modified 2020-06-02 plugin id 101192 published 2017-07-03 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101192 title Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3589) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-3659.NASL description The remote Oracle Linux host is missing a security update for the Unbreakable Enterprise kernel package(s). last seen 2020-06-05 modified 2017-12-14 plugin id 105247 published 2017-12-14 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/105247 title Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3659) (BlueBorne) (Dirty COW) (Stack Clash) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0119.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - macsec: dynamically allocate space for sglist (Jason A. Donenfeld) [Orabug: 26368162] (CVE-2017-7477) - macsec: avoid heap overflow in skb_to_sgvec (Jason A. Donenfeld) [Orabug: 26368162] (CVE-2017-7477) - nfsd: check for oversized NFSv2/v3 arguments (J. Bruce Fields) [Orabug: 26366988] (CVE-2017-7645) last seen 2020-06-01 modified 2020-06-02 plugin id 101198 published 2017-07-03 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101198 title OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0119) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3293-1.NASL description Dmitry Vyukov discovered that KVM implementation in the Linux kernel improperly emulated the VMXON instruction. A local attacker in a guest OS could use this to cause a denial of service (memory consumption) in the host OS. (CVE-2017-2596) Dmitry Vyukov discovered that the generic SCSI (sg) subsystem in the Linux kernel contained a stack-based buffer overflow. A local attacker with access to an sg device could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7187) It was discovered that a NULL pointer dereference existed in the Direct Rendering Manager (DRM) driver for VMware devices in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-7261) Li Qiang discovered that an integer overflow vulnerability existed in the Direct Rendering Manager (DRM) driver for VMware devices in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7294) Jason Donenfeld discovered a heap overflow in the MACsec module in the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-7477) It was discovered that an information leak existed in the set_mempolicy and mbind compat syscalls in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-7616). 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 100255 published 2017-05-17 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/100255 title Ubuntu 17.04 : linux, linux-raspi2 vulnerabilities (USN-3293-1) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2017-3609.NASL description The remote Oracle Linux host is missing a security update for the Unbreakable Enterprise kernel package(s). last seen 2020-06-01 modified 2020-06-02 plugin id 102773 published 2017-08-25 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102773 title Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3609) (Stack Clash)
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References
- https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=4d6fa57b4dab0d77f4d8e9d9c73d1e63f6fe8fee
- https://bugzilla.redhat.com/show_bug.cgi?id=1445207
- https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=5294b83086cc1c35b4efeca03644cf9d12282e5b
- http://www.securityfocus.com/bid/98014
- http://www.securitytracker.com/id/1038500
- https://access.redhat.com/errata/RHSA-2017:1616
- https://access.redhat.com/errata/RHSA-2017:1615