Published: 25/12/2017 Updated: 08/03/2019

CVSS v2 Base Score: 9.3 | Impact Score: 10 | Exploitability Score: 8.6

CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8

VMScore: 935

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

An issue exists in certain Apple products. iOS prior to 11.2 is affected. macOS prior to 10.13.2 is affected. tvOS prior to 11.2 is affected. watchOS prior to 4.2 is affected. The issue involves the "Kernel" component. It allows malicious users to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

Vulnerable Product	Search on Vulmon	Subscribe to Product
apple tvos
apple iphone os
apple mac os x
apple watchos

posix_spawn is a complex syscall which takes a lot of arguments from userspace The third argument is a pointer to a further arguments descriptor in userspace with the following structure (on 32-bit): struct user32__posix_spawn_args_desc { uint32_t attr_size; /* size of attributes block */ uint32_t attrp; /* pointer to block */ ...

CWE-119 https://support.apple.com/HT208334 https://support.apple.com/HT208331 https://support.apple.com/HT208327 https://support.apple.com/HT208325 https://www.exploit-db.com/exploits/43325/http://www.securitytracker.com/id/1039966 http://www.securitytracker.com/id/1039953 http://www.securitytracker.com/id/1039952 http://www.securityfocus.com/bid/102100 https://nvd.nist.gov https://www.exploit-db.com/exploits/43325/

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CVE-2017-13876

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