提权可以参考上一篇文章,利用栈上的残留值来bypass kaslr。 exp #ifndef _GNU_SOURCE #define _GNU_SOURCE #endif #include <asm/ldt.h> #include <assert.h> #include <ctype.h> #include <errno.h> #include <fcntl.h> #include <linux/keyctl.h> #include <linux/userfaultfd.h> #include <p...
kernel module version check bypass1、 举例说明2、 内核是怎么实现的3、 怎样去突破4、 总结1、 举例说明 Linux内核版本很多,升级很快,2个小内核版本中内核函数的定义可能都不一样,为了确保不一致的驱动程序导致kernel oops, 开发者加入了模块验证机制。它在加载内核模块的时候对模块进行校验, 如果模块与主机的一...
A system crashed atdo_sys_open. do_sys_openinvoked bygsch_openat_hook_fnwhich is provided by third party modulegsch. Call Trace is like below. Raw [4301687.497556] BUG: unable to handle kernel paging request at ffffffffffff8a08 [4301687.498137] PGD 3b34c13067 P4D 3b34c13067 PUD 3b34c1506...
2017: "Linux kernel 2.6.0 to 4.12-rc4 infoleak due to a data race in ALSA timer" by Alexander Potapenko [announcement] [CVE-2017-1000380] 2017: "The Infoleak that (Mostly) Wasn't" by Brad Spengler [article] [CVE-2017-7616] 2016: "Exploiting a Linux Kernel Infoleak to bypass Linux...
irqbypass crc32_pclmul ghash_clmulni_intel ttm aesni_intel lrw gf128mul drm_kms_helper glue_helper ablk_helper syscopyarea sysfillrect bnxt_re ses pcspkr cryptd enclosure sysimgblt ib_core fb_sys_fops sg drm mei_me joydev [714084.699725] mei ipmi_si lpc_ich hpilo hpwdt drm_panel_...
The kernel version you've mentioned, 5.4.113-1.el7.elrepo.x86_64, suggests that you are using a kernel provided by the ELRepo repository for an Enterprise Linux 7 (RHEL 7 or CentOS 7) system and my understanding is that in kernel 5.4.113, pcrypt is not enabled by...
Tailored for Non-Malicious Use: Given its need for physical access and the fact that it does not persist after a reboot, unc0ver is unlikely to be employed in most malicious scenarios, like malware attacks. Instead, it serves more as a tool for users and developers to bypass Apple’s restr...
1.build kernel之时的各个configuration选项。 2.当kernel启动之时,可以参数在kernel被GRUB或LILO等启动程序调用之时传递给kernel。 3.在kernel运行时,修改/proc或/sys目录下的文件。 这里我简单讲的就是第二种方式了,kernel在grub中配置的启动参数。 首先,kernel有哪些参数呢? 在linux的源代码中,有这样的一个文档...
- regulator: vctrl: Use locked regulator_get_voltage in probe path - blk-crypto: fix check for too-large dun_bytes - spi: davinci: invoke chipselect callback - x86/mce: Defer processing of early errors - tpm: ibmvtpm: Avoid error message when process gets signal while waiting ...
Kernel exploitation refers to the act of taking advantage of vulnerabilities in the core component of an operating system to launch attacks that compromise its security, such as breaking confidentiality, integrity, and availability through techniques like arbitrary reads, control flow redirection, and sta...