ID

VAR-201711-0433

CVE

CVE-2017-13833

TITLE

Apple macOS of CFNetwork Component vulnerable to arbitrary code execution in privileged context

DESCRIPTION

An issue was discovered in certain Apple products. macOS before 10.13.1 is affected. The issue involves the "CFNetwork" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app. This vulnerability allows local attackers to escalate privileges on vulnerable installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.The specific flaw exists within the nsurlstoraged service. The issue results from the lack of proper validation of a reference count, which can result in an integer overflow when incrementing it. An attacker can leverage this vulnerability to escalate privileges under the context of the current service. Apple iOS/WatchOS/tvOS/macOS are prone to multiple security vulnerabilities. Apple macOS High Sierra is a set of dedicated operating systems developed by Apple (Apple) for Mac computers. CFNetwork is one of the network protocol libraries. Alternatively, on your watch, select "My Watch > General > About". CVE-2017-7156: an anonymous researcher CVE-2017-7157: an anonymous researcher CVE-2017-13856: Jeonghoon Shin CVE-2017-13870: an anonymous researcher CVE-2017-13866: an anonymous researcher Entry added December 13, 2017 Wi-Fi Available for: iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, iPhone SE, iPhone 5s, 12.9-inch iPad Pro 1st generation, iPad Air 2, iPad Air, iPad 5th generation, iPad mini 4, iPad mini 3, iPad mini 2, and iPod touch 6th generation Released for iPhone 7 and later and iPad Pro 9.7-inch (early 2016) and later in iOS 11.1. Impact: An attacker in Wi-Fi range may force nonce reuse in WPA multicast/GTK clients (Key Reinstallation Attacks - KRACK) Description: A logic issue existed in the handling of state transitions. CVE-2017-13080: Mathy Vanhoef of the imec-DistriNet group at KU Leuven Installation note: This update is available through iTunes and Software Update on your iOS device, and will not appear in your computer's Software Update application, or in the Apple Downloads site. Make sure you have an Internet connection and have installed the latest version of iTunes from https://www.apple.com/itunes/ iTunes and Software Update on the device will automatically check Apple's update server on its weekly schedule. When an update is detected, it is downloaded and the option to be installed is presented to the user when the iOS device is docked. We recommend applying the update immediately if possible. Selecting Don't Install will present the option the next time you connect your iOS device. The automatic update process may take up to a week depending on the day that iTunes or the device checks for updates. You may manually obtain the update via the Check for Updates button within iTunes, or the Software Update on your device. To check that the iPhone, iPod touch, or iPad has been updated: * Navigate to Settings * Select General * Select About. The version after applying this update will be "11.2". -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 APPLE-SA-2017-12-6-1 macOS High Sierra 10.13.2, Security Update 2017-002 Sierra, and Security Update 2017-005 El Capitan macOS High Sierra 10.13.2, Security Update 2017-002 Sierra, and Security Update 2017-005 El Capitan are now available and address the following: apache Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: Processing a maliciously crafted Apache configuration directive may result in the disclosure of process memory Description: Multiple issues were addressed by updating to version 2.4.28. CVE-2017-9798 curl Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: Malicious FTP servers may be able to cause the client to read out-of-bounds memory Description: An out-of-bounds read issue existed in the FTP PWD response parsing. This issue was addressed with improved bounds checking. CVE-2017-1000254: Max Dymond Directory Utility Available for: macOS High Sierra 10.13 and macOS High Sierra 10.13.1 Not impacted: macOS Sierra 10.12.6 and earlier Impact: An attacker may be able to bypass administrator authentication without supplying the administrator's password Description: A logic error existed in the validation of credentials. This was addressed with improved credential validation. CVE-2017-13883: an anonymous researcher Intel Graphics Driver Available for: macOS High Sierra 10.13.1 Impact: A local user may be able to cause unexpected system termination or read kernel memory Description: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed through improved input validation. CVE-2017-13878: Ian Beer of Google Project Zero Intel Graphics Driver Available for: macOS High Sierra 10.13.1 Impact: An application may be able to execute arbitrary code with system privileges Description: An out-of-bounds read was addressed through improved bounds checking. CVE-2017-13875: Ian Beer of Google Project Zero IOAcceleratorFamily Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2017-13844: found by IMF developed by HyungSeok Han (daramg.gift) of SoftSec, KAIST (softsec.kaist.ac.kr) IOKit Available for: macOS High Sierra 10.13.1 Impact: An application may be able to execute arbitrary code with system privileges Description: An input validation issue existed in the kernel. This issue was addressed through improved input validation. CVE-2017-13848: Alex Plaskett of MWR InfoSecurity CVE-2017-13858: an anonymous researcher IOKit Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: An application may be able to execute arbitrary code with system privileges Description: Multiple memory corruption issues were addressed through improved state management. CVE-2017-13847: Ian Beer of Google Project Zero Kernel Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2017-13862: Apple Kernel Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: An application may be able to read restricted memory Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2017-13876: Ian Beer of Google Project Zero Kernel Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: An application may be able to read restricted memory Description: A type confusion issue was addressed with improved memory handling. CVE-2017-13855: Jann Horn of Google Project Zero Kernel Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2017-13867: Ian Beer of Google Project Zero Kernel Available for: macOS High Sierra 10.13.1 Impact: An application may be able to read restricted memory Description: A validation issue was addressed with improved input sanitization. CVE-2017-13865: Ian Beer of Google Project Zero Kernel Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: An application may be able to read restricted memory Description: A validation issue was addressed with improved input sanitization. CVE-2017-13868: Brandon Azad CVE-2017-13869: Jann Horn of Google Project Zero Mail Available for: macOS High Sierra 10.13.1 Impact: A S/MIME encrypted email may be inadvertently sent unencrypted if the receiver's S/MIME certificate is not installed Description: An inconsistent user interface issue was addressed with improved state management. CVE-2017-13871: an anonymous researcher Mail Drafts Available for: macOS High Sierra 10.13.1 Impact: An attacker with a privileged network position may be able to intercept mail Description: An encryption issue existed with S/MIME credetials. The issue was addressed with additional checks and user control. CVE-2017-13860: Michael Weishaar of INNEO Solutions GmbH OpenSSL Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6 Impact: An application may be able to read restricted memory Description: An out-of-bounds read issue existed in X.509 IPAddressFamily parsing. This issue was addressed with improved bounds checking. CVE-2017-3735: found by OSS-Fuzz Screen Sharing Server Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6 Impact: A user with screen sharing access may be able to access any file readable by root Description: A permissions issue existed in the handling of screen sharing sessions. This issue was addressed with improved permissions handling. CVE-2017-13826: Trevor Jacques of Toronto Installation note: macOS High Sierra 10.13.2, Security Update 2017-002 Sierra, and Security Update 2017-005 El Capitan may be obtained from the Mac App Store or Apple's Software Downloads web site: https://support.apple.com/downloads/ Information will also be posted to the Apple Security Updates web site: https://support.apple.com/kb/HT201222 This message is signed with Apple's Product Security PGP key, and details are available at: https://www.apple.com/support/security/pgp/ -----BEGIN PGP SIGNATURE----- iQJdBAEBCgBHFiEEcuX4rtoRe4X62yWlg6PvjDRstEYFAlooN9kpHHByb2R1Y3Qt c2VjdXJpdHktbm9yZXBseUBsaXN0cy5hcHBsZS5jb20ACgkQg6PvjDRstEbvlg/7 Bub6HL7Bv+9taMMz+3Rl2exjVIBv3fUflhpLh1524wFe6UjUyy4Z3X0t/LKogGwb GkHmcvDTK+85yLJeF0XQLHzzeITPrAiQ06FSnpzq6GjDEgczgbyJtw6aT4iagDgK NYfWnmU1XDjpx35kjEyyZblIxDHsvMJRelMdjx4w6In3Pgi+DG+ndYbK5hoaImOX Ywaoc2xzGUXpnJU6Y5tkIbVBF4P4tZQcJJt6cfhTOcR9+ut87HQqc9mo1UGMUqAv z0kYZ4MtGRM4uDiVynkKxwj+NNtSVxwvf1mN2Jb7ApFt0lAfmS8L8xzI15NlbJxJ oSuIvVi3pAhOkO7etaC/CLOxw+wRGaRbaf1i4VmaLI6HW2H2/vWiL1KDhHFIIfVq xBGday+yWkaS9o8B85QZy2GHxEFYxzMvArtzK3tBj2kZCuEcJis60CanwZOSbcsp 4IlEKVGabMNwGwOVX22UwrLCtMzsqSVZpYyKy/m7n6DXnpspuWTohDmc68zq/4nj 5LgGTFz8IUaT1ujQZq9g4siVeXzu0bsAgttauRlrWilUsDtpsv5s+dkGlXPFxbDf BuvNgqGSg/xz0QRGmJ7UA3g3L7fTvWhOzXnBOh7c45OpYT54tqGIEi6Bk72NyPz+ ioQ7LBPJE6RCSy5XZJ6x8YwSYp+kO8BBPaYsxSoxXCs= =2VBd -----END PGP SIGNATURE-----

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

buffer error

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Niklas Baumstark and Samuel Gro

SOURCES

LAST UPDATE DATE

2025-04-20T20:54:44.823000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE