4638 matches found
OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0266)
The remote OracleVM system is missing necessary patches to address critical security updates : - bnxten: xdp: don't make drivers report attachment mode partial backport Somasundaram Krishnasamy Orabug: 27988326 - bpf: make bnxt compatible w/ bpfxdpadjusttail Nikita V. Shirokov - bnxten: add meta...
Linux Kernel - Pointer Leak via BPF Exploit
Exploit for linux platform in category dos / poc / Commit 82abbf8d2fc46d79611ab58daa7c608df14bb3ee "bpf: do not allow root to mangle valid pointers", first in v4.15 included the following snippet: ========= @@ -2319,43 +2307,29 @@ static int adjustregminmaxvalsstruct bpfverifierenv env, if...
Linux - Kernel Pointer Leak via BPF
Linux - Kernel Pointer Leak via BPF / Commit 82abbf8d2fc46d79611ab58daa7c608df14bb3ee "bpf: do not allow root to mangle valid pointers", first in v4.15 included the following snippet: ========= @@ -2319,43 +2307,29 @@ static int adjustregminmaxvalsstruct bpfverifierenv env, if srcreg-type !=...
Linux - Kernel Pointer Leak via BPF
/ Commit 82abbf8d2fc46d79611ab58daa7c608df14bb3ee "bpf: do not allow root to mangle valid pointers", first in v4.15 included the following snippet: ========= @@ -2319,43 +2307,29 @@ static int adjustregminmaxvalsstruct bpfverifierenv env, if srcreg-type != SCALARVALUE if dstreg-type != SCALARVALU...
openSUSE Security Update : the Linux Kernel (openSUSE-2018-886) (Foreshadow)
The openSUSE Leap 15.0 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2018-10853: A flaw was found in KVM in which certain instructions such as sgdt/sidt call segmentedwritestd doesn't propagate access correctly. As such, during userspa...
Linux Kernel < 4.14.8 Sign Extension Local Privilege Escalation Exploit
Linux kernel versions prior to 4.14.8 utilize the Berkeley Packet Filter BPF which contains a vulnerability where it may improperly perform signing for an extension. This can be utilized to escalate privileges. The target system must be compiled with BPF support and must not have...
Linux BPF Sign Extension Local Privilege Escalation
This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Linux BPF Sign Extension Local Privilege Escalation', 'Description' = %q Linux kernel prior to 4.14.8 utilizes the Berkeley Packet Filter BPF whi...
Linux - BPF Sign Extension Local Privilege Escalation (Metasploit)
This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Linux BPF Sign Extension Local Privilege Escalation', 'Description' = %q Linux kernel prior to 4.14.8 utilizes the Berkeley Packet Filter BPF whi...
Linux Kernel < 4.13.9 (Ubuntu 16.04 / Fedora 27) - Local Privilege Escalation
/ Credit @bleidl, this is a slight modification to his original POC https://github.com/brl/grlh/blob/master/get-rekt-linux-hardened.c For details on how the exploit works, please visit https://ricklarabee.blogspot.com/2018/07/ebpf-and-analysis-of-get-rekt-linux.html Tested on Ubuntu 16.04 with th...
CVE-2017-5426
On Linux, if the secure computing mode BPF seccomp-bpf filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. Note:...
Code injection
On Linux, if the secure computing mode BPF seccomp-bpf filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. Note:...
CVE-2017-5426
CVE-2017-5426: On Linux, when seccomp-bpf is active as Gecko Media Plugin sandbox starts, the sandbox may fail to initialize, leaving code that would run in the sandbox only protected by a weaker filter. Affected products are Firefox < 52 and Thunderbird < 52 (Linux only). This can enable s...
CVE-2017-5426
On Linux, if the secure computing mode BPF seccomp-bpf filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. Note:...
Exploit for Improper Restriction of Operations within the Bounds of a Memory Buffer in Linux Linux_Kernel
Vulnerability Description Ubuntu is an open-source GNU/Linux o...
USN-3633-1: Linux kernel (Intel Euclid) vulnerability
Jann Horn discovered that the Berkeley Packet Filter BPF implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code...
Ubuntu 16.04 LTS : Linux kernel (Intel Euclid) vulnerability (USN-3633-1)
The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3633-1 advisory. Jann Horn discovered that the Berkeley Packet Filter BPF implementation in the Linux kernel improperly performed sign extension in some situations. A local attack...
USN-3619-2: Linux kernel (Xenial HWE) vulnerabilities
USN-3619-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Jann Horn discovered that the Berkeley Packet Filter BPF implementation in the Linux...
Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3619-1)
The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3619-1 advisory. Jann Horn discovered that the Berkeley Packet Filter BPF implementation in the Linux kernel improperly performed sign extension in some situations. A loc...
USN-3619-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
Jann Horn discovered that the Berkeley Packet Filter BPF implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2017-16995 It was discovered that a...
Linux BPF Sign Extension Local Privilege Escalation
Linux kernel prior to 4.14.8 contains a vulnerability in the Berkeley Packet Filter BPF verifier. The checkaluop function performs incorrect sign extension which allows the verifier to be bypassed, leading to arbitrary kernel read/write. The target system must be compiled with BPF support and...