Top Tweets for #kASLR
KASLD v0.1.0 released.
New orchestrator runs and cross-correlates leak components to map kernel memory layout. Computes #KASLR slide, entropy bits, and renders virtual/physical memory maps.
Now includes prefetch side-channel.
https://t.co/NDUxBpgqE5
Predictable OS load, ntoskrnl #kASLR off:
r$t0=0;# and*77FFFF winload!MmArchInitialize L200;r$t0=@$exp+4;.while(by(@$t0)){r$t0=@$t0+1};ed@$t0-3 0;
ed MmArchKsegAddressRange 0 FFFFF800;
r$t0=SymCryptRngAesGenerate;ed@$t0 33CA8B48 E9D2;ed@$t0+6 memset-@$t0-A
✔️w11 24H2
✔️w10 22H2
Kernel VA region for sys images spans 512_GB (256_TB LA57); nt!MiAssignTopLevelRanges shuffles regions' order.
So why is ntoskrnl always in the first 31_GB from 0xFFFF_FF80_0000_0000? 🤔
That's just how winload.efi sets MmArchKsegBias/MmArchKsegBase!
#KASLR #0xFFFFFF8000000000
Kernel VA region for sys images spans 512_GB (256_TB LA57); nt!MiAssignTopLevelRanges shuffles regions' order.
So why is ntoskrnl always in the first 31_GB from 0xFFFF_FF80_0000_0000? 🤔
That's just how winload.efi sets MmArchKsegBias/MmArchKsegBase!
#KASLR #0xFFFFFF8000000000
#KASLR #KernelSecurity #macOS SysBumps: A Groundbreaking KASLR Break Attack Targeting Apple Silicon macOS Devices https://t.co/sueFDVT0fS
#Exploiting the #NT #Kernel in 24H2: New Bugs in Old Code & Side Channels Against #KASLR
https://t.co/tjOSEwknXy
https://t.co/oYZt2MOrmG
I'm excited to announce that the technical analysis and the exploit of my CVE-2023-6546 (ZDI-24-020)
Linux Kernel GSM Multiplexing Race Condition LPE is now available on : https://t.co/bk4yjCMtdl
Happy Reading
#Cybersecurity #Vulnerability #CVE #InfoSec #exploit #Security
#Cybersecurity is not a luxury, it's a necessity. Check out the latest #openEulertutorials on #ASLR and #KASLR, two powerful techniques to prevent and mitigate #incidents.
https://t.co/FYIWrwdKSE
#opensource #openEuler #systemsecurity #randomization
Nice repository collecting techniques to infer the Linux kernel base virtual address (KASLR bypass)
https://t.co/hhqZXzcWHd
#Linux #kernel #kaslr #infosec #cybersecurity
SIOSセキュリティブログを更新しました。
Kernel Page Table Isolation（KPTI）下でKALSRを破る脆弱性(EntryBleed: Important: CVE-2022-4543)
#sios_tech #security #vulnerability #セキュリティ #脆弱性 #linux #kernel #kaslr #entrybleed #kpti
https://t.co/su7ZjbpVT6
Support for #EntryBleed prefetch #KASLR bypass (CVE-2022-4543) added to KASLD - https://t.co/NDUxBpxtG5
Should work for Intel x86_64 CPUs (with KPTI enabled or disabled) and AMD x86_64 CPUs with KPTI disabled.
Uses Will's proof of concept code:
https://t.co/covFlIZQzd
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