Contribuez à SecuObs en envoyant des bitcoins ou des dogecoins.
Nouveaux articles (fr): 1pwnthhW21zdnQ5WucjmnF3pk9puT5fDF
Amélioration du site: 1hckU85orcGCm8A9hk67391LCy4ECGJca

Contribute to SecuObs by sending bitcoins or dogecoins.

Chercher :
Newsletter :  


Revues :
- Presse
- Presse FR
- Vidéos
- Twitter
- Secuobs





Sommaires :
- Tendances
- Failles
- Virus
- Concours
- Reportages
- Acteurs
- Outils
- Breves
- Infrastructures
- Livres
- Tutoriels
- Interviews
- Podcasts
- Communiques
- USBsploit
- Commentaires


Revue Presse:
- Tous
- Francophone
- Par mot clé
- Par site
- Le tagwall


Top bi-hebdo:
- Ensemble
- Articles
- Revue
- Videos
- Twitter
- Auteurs


Articles :
- Par mot clé
- Par auteur
- Par organisme
- Le tagwall


Videos :
- Toutes
- Par mot clé
- Par site
- Le tagwall


Twitter :
- Tous
- Par mot clé
- Par compte
- Le tagwall


Commentaires :
- Breves
- Virus
- Failles
- Outils
- Tutoriels
- Tendances
- Acteurs
- Reportages
- Infrastructures
- Interviews
- Concours
- Livres
- Communiques


RSS/XML :
- Articles
- Commentaires
- Revue
- Revue FR
- Videos
- Twitter


RSS SecuObs :
- sécurité
- exploit
- windows
- attaque
- outil
- microsoft


RSS Revue :
- security
- microsoft
- windows
- hacker
- attack
- network


RSS Videos :
- curit
- security
- biomet
- metasploit
- biometric
- cking


RSS Twitter :
- security
- linux
- botnet
- attack
- metasploit
- cisco


RSS Comments :
- Breves
- Virus
- Failles
- Outils
- Tutoriels
- Tendances
- Acteurs
- Reportages
- Infrastructures
- Interviews
- Concours
- Livres
- Communiques


RSS OPML :
- Français
- International











Revue de presse francophone :
- Appaloosa AppDome nouent un partenariat pour accompagner les entreprises dans le déploiement et la protection des applications mobiles
- D-Link offre une avec un routeur VPN sans fil AC
- 19 mai Paris Petit-Déjeuner Coreye Développer son business à l'abri des cyberattaques
- POYNTING PRESENTE LA NOUVELLE ANTENNE OMNI-291, SPECIALE MILIEU MARITIME, CÔTIER ET MILIEU HUMIDE
- Flexera Software Les utilisateurs français de PC progressent dans l'application de correctifs logiciels, mais des défis de tailles subsistent
- Riverbed lance SD-WAN basé sur le cloud
- Fujitsu multi-récompensé VMware lui décerne plusieurs Partner Innovation Awards à l'occasion du Partner Leadership Summit
- Zscaler Private Access sécuriser l'accès à distance en supprimant les risques inhérents aux réseaux privés virtuels
- QNAP annonce la sortie de QTS 4.2.1
- Une enquête réalisée par la société de cyber sécurité F-Secure a décelé des milliers de vulnérabilités graves, potentiellement utilisables par des cyber criminels pour infiltrer l'infrastru
- Trouver le juste équilibre entre une infrastructure dédiée et cloud le dilemme de la distribution numérique
- 3 juin - Fleurance - Cybersécurité Territoires
- Cyber-assurances Seules 40 pourcents des entreprises françaises sont couvertes contre les violations de sécurité et les pertes de données
- Des étudiants de l'ESIEA inventent CheckMyHTTPS un logiciel qui vérifie que vos connexions WEB sécurisées ne sont pas interceptées
- Les produits OmniSwitch d'Alcatel-Lucent Enterprise ALE gagnent en sécurité pour lutter contre les cyber-attaques modernes

Dernier articles de SecuObs :
- DIP, solution de partage d'informations automatisée
- Sqreen, protection applicative intelligente de nouvelle génération
- Renaud Bidou (Deny All): "L'innovation dans le domaine des WAFs s'oriente vers plus de bon sens et d'intelligence, plus de flexibilité et plus d'ergonomie"
- Mises à jour en perspective pour le système Vigik
- Les russes ont-ils pwn le système AEGIS ?
- Le ministère de l'intérieur censure une conférence au Canada
- Saut d'air gap, audit de firmware et (in)sécurité mobile au programme de Cansecwest 2014
- GCHQ: Le JTRIG torpille Anonymous qui torpille le JTRIG (ou pas)
- #FIC2014: Entrée en territoire inconnu
- Le Sénat investit dans les monnaies virtuelles

Revue de presse internationale :
- VEHICLE CYBERSECURITY DOT and Industry Have Efforts Under Way, but DOT Needs to Define Its Role in Responding to a Real-world Attack
- Demand letter served on poll body over disastrous Comeleak breach
- The Minimin Aims To Be The Simplest Theremin
- Hacking group PLATINUM used Windows own patching system against it
- Hacker With Victims in 100 Nations Gets 7 Years in Prison
- HPR2018 How to make Komboucha Tea
- Circuit Bender Artist bends Fresnel Lens for Art
- FBI Director Suggests iPhone Hacking Method May Remain Secret
- 2016 Hack Miami Conference May 13-15, 2016
- 8-bit Video Wall Made From 160 Gaming Keyboards
- In An Era Of Decline, News Sites Can t Afford Poor Web Performance
- BeautifulPeople.com experiences data breach 1m affected
- Swedish Air Space Infringed, Aircraft Not Required
- Why cybercriminals attack healthcare more than any other industry
- Setting the Benchmark in the Network Security Forensics Industry

Annuaire des videos
- FUZZING ON LINE PART THREE
- Official Maltego tutorial 5 Writing your own transforms
- Official Maltego tutorial 6 Integrating with SQL DBs
- Official Maltego tutorial 3 Importing CSVs spreadsheets
- install zeus botnet
- Eloy Magalhaes
- Official Maltego tutorial 1 Google s websites
- Official Maltego tutorial 4 Social Networks
- Blind String SQL Injection
- backdoor linux root from r57 php shell VPS khg crew redc00de
- How To Attaque Pc With Back Track 5 In Arabique
- RSA Todd Schomburg talks about Roundup Ready lines available in 2013
- Nessus Diagnostics Troubleshooting
- Panda Security Vidcast Panda GateDefender Performa Parte 2 de 2
- MultiPyInjector Shellcode Injection

Revue Twitter
- RT @fpalumbo: Cisco consistently leading the way ? buys vCider to boost its distributed cloud vision #CiscoONE
- @mckeay Looks odd... not much to go on (prob some slideshow/vid app under Linux)
- [SuggestedReading] Using the HTML5 Fullscreen API for Phishing Attacks
- RT @BrianHonan: Our problems are not technical but cultural. OWASP top 10 has not changed over the years @joshcorman #RSAC
- RT @mikko: Wow. Apple kernels actually have a function called PE_i_can_has_debugger:
- [Blog Spam] Metasploit and PowerShell payloads
- PinkiePie Strikes Again, Compromises Google Chrome in Pwnium Contest at Hack in the Box: For the second time thi...
- @mikko @fslabs y'all wldn't happen to have lat/long data sets for other botnets, wld you? Doing some research (free/open info rls when done)
- RT @nickhacks: Want to crash a remote host running Snow Leopard? Just use: nmap -P0 -6 --script=targets-ipv6-multicast-mld #wishiwaskidding
- An inexpensive proxy service called is actually a front for #malware distribution -

Mini-Tagwall
Revue de presse : security, microsoft, windows, hacker, attack, network, vulnerability, google, exploit, malware, internet, remote, iphone

+ de mots clés pour la revue de presse

Annuaires des videos : curit, security, biomet, metasploit, biometric, cking, password, windows, botnet, defcon, tutorial, crypt, xploit

+ de mots clés pour les videos

Revue Twitter : security, linux, botnet, attack, metasploit, cisco, defcon, phish, exploit, google, inject, server, firewall

+ de mots clés pour la revue Twitter

Top bi-hebdo des articles de SecuObs
- [Ettercap – Partie 2] Ettercap par l'exemple - Man In the Middle et SSL sniffing
- [Infratech - release] version 0.6 de Bluetooth Stack Smasher
- [IDS Snort Windows – Partie 2] Installation et configuration
- [Infratech - vulnérabilité] Nouvelle version 0.8 de Bluetooth Stack Smasher
- Mises à jour en perspective pour le système Vigik
- USBDumper 2 nouvelle version nouvelles fonctions !
- EFIPW récupère automatiquement le mot de passe BIOS EFI des Macbook Pro avec processeurs Intel
- La sécurité des clés USB mise à mal par USBDUMPER
- Une faille critique de Firefox expose les utilisateurs de Tor Browser Bundle
- Installation sécurisée d'Apache Openssl, Php4, Mysql, Mod_ssl, Mod_rewrite, Mod_perl , Mod_security

Top bi-hebdo de la revue de presse
- StackScrambler and the Tale of a Packet Parsing Bug

Top bi-hebdo de l'annuaire des videos
- DC++ Botnet. How To DDos A Hub With Fake IPs.
- Comment creer un server botnet!!!!(Réseau de pc zombies)
- Defcon 14 Hard Drive Recovery Part 3

Top bi-hebdo de la revue Twitter
- RT @secureideas: I believe that all the XSS flaws announced are fixed in CVS. Will test again tomorrow if so, release 1.4.3. #BASESnort
- Currently, we do not support 100% of the advanced PDF features found in Adobe Reader... At least that's a good idea.
- VPN (google): German Foreign Office Selects Orange Business for Terrestrial Wide: Full
- @DisK0nn3cT Not really, mostly permission issues/info leak...they've had a couple of XSS vulns but nothing direct.
- Swatting phreaker swatted and heading to jail: A 19-year-old American has been sentenced to eleven years in pris..
- RT @fjserna You are not a true hacker if the calc.exe payload is not the scientific one... infosuck.org/0x0035.png

Top des articles les plus commentés
- [Metasploit 2.x – Partie 1] Introduction et présentation
- Microsoft !Exploitable un nouvel outil gratuit pour aider les développeurs à évaluer automatiquement les risques
- Webshag, un outil d'audit de serveur web
- Les navigateurs internet, des mini-systèmes d’exploitation hors de contrôle ?
- Yellowsn0w un utilitaire de déblocage SIM pour le firmware 2.2 des Iphone 3G
- CAINE un Live[CD|USB] pour faciliter la recherche légale de preuves numériques de compromission
- Nessus 4.0 placé sous le signe de la performance, de l'unification et de la personnalisation
- [Renforcement des fonctions de sécurité du noyau Linux – Partie 1] Présentation
- [IDS Snort Windows – Partie 1] Introduction aux IDS et à SNORT
- Origami pour forger, analyser et manipuler des fichiers PDF malicieux

Vulnerability Deep Dive Exploiting the Apple Graphics Driver and Bypassing KASLR

Si vous voulez bloquer ce service sur vos fils RSS
Si vous voulez nous contacter ou nous proposer un fil RSS

Menu > Articles de la revue de presse : - l'ensemble [tous | francophone] - par mots clé [tous] - par site [tous] - le tagwall [voir] - Top bi-hebdo de la revue de presse [Voir]

S'abonner au fil RSS global de la revue de presse



Vulnerability Deep Dive Exploiting the Apple Graphics Driver and Bypassing KASLR

Par Security Bloggers Network
Le [2016-04-07] à 22:59:06



Présentation : Cisco Talos vulnerability researcher Piotr Bania recently discovered a vulnerability in the Apple Intel HD 3000 Graphics driver, which we blogged about here. In this post we are going to take a deeper dive into this research and look into the details of the vulnerability as well as the KASLR bypass and kernel exploitation that could lead to arbitrary local code execution. These techniques could be leveraged by malware authors to bypass software sandbox technologies, which can simply be within the software program browser or application sandbox or at the kernel level. In the course of conducting our research, Talos found that Apple OSX computers with Intel HD Graphics 3000 GPU units possess a null pointer dereference vulnerability in version 10.0.0 as presented below Typically sending a very basic payload to the graphics driver through IOConnectCallMethod function causes a kernel panic due to null pointer reference at address 0x1aa2f. In this case the RDX register points to NULL. The instruction itself tries to read data from unavailable memory which causes the kernel to panic. At this point this vulnerability seems to be local a denial-of-service attack, however the call instruction at 0x1aa68 looks very promising. If we can reach this instruction, that would allow us the ability to escalate this from a local denial-of-service to local code execution. So, how can we get there In order to escalate from denial-of-service to local code execution, we first need to check and see whether we can map our data at a NULL page, basically a memory region starting from NULL address. NULL page mapping is unavailable on newest Microsoft Windows systems but it is still available on OS X systems however a few conditions needs to be met. To map a null page on OSX The binary needs to be 32-bit. Then compile with -m32 -Wl,-pagezero_size,0 -O3 With those conditions met we can now map our data at the NULL page basically a memory region starting from null address . If the comparison at address 0x1aa54 can be forced to skip the JA jump located at 0x1aa57 we would finally arrive at the 0x1aa68 CALL instruction. Since we control the RDI value see 0x1aa2f we also control the EAX value at 0x1aa36. This control over EAX, part of RAX, allows us to fool the comparison condition at 0x11a54. So now we are at address 0x1aa60 which basically allows us to call any pointer written at 0x980, a memory which we control. With those controls in place, what s our next step On Intel CPUs released after 2013, these conditions still would not be exploitable because of a feature called SMEP Supervisor Mode Execution Prevention . SMEP prevents the execution of code located on a user- mode page at a CPL 0, meaning that a direct call to our shellcode written to the NULL page would result in kernel panic and failed code execution. However this feature was not present in the Apple units we researched. Stage 1 - Get the Kernel Address -------------------------------- SMEP Supervisor Mode Execution Protection and KASLR Kernel Address Space Layout Randomization have been widely adopted in newer OS and CPU implementations, specifically Windows 8 going forward and Yosemite in OSX. With a SMEP KASLR implementations in place this step would require an additional vulnerability to leak the kernel memory address. Since SMEP isn t a problem in our tested version of OSX, we will go old school . Long ago, way back in the dark ages of 2005 there was a technique used to obtain the kernel address on Windows it was called the SYSENTER_EIP_MSR Scandown technique 2 . With a few modifications, keeping in mind that we are on 64-bit OS X system, the same idea can be applied. In this example we are reading data from the LSTAR Long System Target-Address Register MSR register which contains the kernel's RIP SYSCALL entry for 64 bit software, as well as scanning backwards to find the kernel OSX signature. So after we turn this into stage0 payload and send it to the graphics driver we should get a kernel address written to the first 8-bytes of our NULL page. Success Getting the kernel base address was essential for calculating the API addresses that will be used later in STAGE 2 shellcode. Those APIs are essential for escalating the privileges of attacker. Now that we have the leaked kernel address calculating the essential API addresses current_proc, _proc_ucred, _posix_cred_get is an easy task. There are variety of free MACH-O parsers available out there 3 so we will skip ahead to stage 2. Stage 2 - Execute the Shellcode ------------------------------- Assuming all the needed API addresses are resolved at this point it is now time to force the kernel to execute the final stage of the shellcode. This final stage will give our process root privileges and execute a shell. This shellcode executes the necessary OSX kernel APIs in order to escalate the privileges. And the final output - now with root access Conclusion Here we ve seen the escalation of a denial-of-service vulnerability into local code execution. Mapping the kernel address we were able to walk backwards to the base address and calculate the offset to the needed functions, bypass the KASLR and get root. Understanding the techniques to bypass the KASLR and elevate our exploitation is integral in learning how to best mitigate these types of attacks. Cisco Talos research, discovery, and responsible disclosure of software vulnerabilities help secure the platforms and software that our customers depend on as well as the entire online community by identifying security issues that otherwise could be exploited by threat actors. Uncovering new 0-day vulnerabilities not only helps improve the overall security of the software that our customers use, but it also enables us to directly improve the procedures in our own security development lifecycle, which improves the security of all of the products that Cisco produces. Proof-of-Concept The complete proof-of-concept exploit illustrated here is available at the Cisco Talos Vulnerability Development team s code repository https github.com talos-vulndev advisories tree master TALOS-2016-0088 References 1 - https www.blackhat.com docs eu-15 materials eu-15-Todesco-Attacking-The-XNU-Kernal-In-El-Capitain.pdf 2 - http www.uninformed.org v 3 a 4 t txt 3 - https github.com kpwn tpwn blob master lsym.m

Les mots clés de la revue de presse pour cet article : vulnerability apple
Les videos sur SecuObs pour les mots clés : vulnerability apple
Les éléments de la revue Twitter pour les mots clé : vulnerability apple



AddThis Social Bookmark Widget



Les derniers articles du site "Security Bloggers Network" :

- In An Era Of Decline, News Sites Can t Afford Poor Web Performance
- BeautifulPeople.com experiences data breach 1m affected
- Swedish Air Space Infringed, Aircraft Not Required
- Why cybercriminals attack healthcare more than any other industry
- Setting the Benchmark in the Network Security Forensics Industry
- Spotify denies hack users subjected to weird music beg to differ
- The Dangerous Game of DNS
- Threat Recap Week of April 22nd
- Is your security appliance actually FIPS validated
- Deploying SAST Static Application Security Testing




S'abonner au fil RSS global de la revue de presse

Menu > Articles de la revue de presse : - l'ensemble [tous | francophone] - par mots clé [tous] - par site [tous] - le tagwall [voir] - Top bi-hebdo de la revue de presse [Voir]



Si vous voulez bloquer ce service sur vos fils RSS :
- avec iptables "iptables -A INPUT -s 88.190.17.190 --dport 80 -j DROP"
- avec ipfw et wipfw "ipfw add deny from 88.190.17.190 to any 80"
- Nous contacter par mail




SecuToolBox :

Mini-Tagwall des articles publiés sur SecuObs :

Mini-Tagwall de l'annuaire video :

Mini-Tagwall des articles de la revue de presse :

Mini-Tagwall des Tweets de la revue Twitter :