cd868436ff
25 changes to exploits/shellcodes Realterm Serial Terminal 2.0.0.70 - Denial of Service Realterm Serial Terminal 2.0.0.70 - Local Buffer Overflow (SEH) NBMonitor 1.6.5.0 - 'Key' Denial of Service (PoC) Oracle Java Runtime Environment - Heap Out-of-Bounds Read During OTF Font Rendering in glyph_CloseContour Oracle Java Runtime Environment - Heap Out-of-Bounds Read During TTF Font Rendering in OpenTypeLayoutEngine::adjustGlyphPositions Oracle Java Runtime Environment - Heap Out-of-Bounds Read During TTF Font Rendering in ExtractBitMap_blocClass Oracle Java Runtime Environment - Heap Out-of-Bounds Read During TTF Font Rendering in AlternateSubstitutionSubtable::process mIRC < 7.55 - Remote Command Execution Using Argument Injection Through Custom URI Protocol Handlers qdPM 9.1 - 'type' Cross-Site Scripting qdPM 9.1 - 'search[keywords]' Cross-Site Scripting Master IP CAM 01 3.3.4.2103 - Remote Command Execution MISP 2.4.97 - SQL Command Execution via Command Injection in STIX Module CMSsite 1.0 - 'post' SQL Injection M/Monit 3.7.2 - Privilege Escalation Webiness Inventory 2.3 - 'ProductModel' Arbitrary File Upload Apache CouchDB 2.3.0 - Cross-Site Scripting ArangoDB Community Edition 3.4.2-1 - Cross-Site Scripting Comodo Dome Firewall 2.7.0 - Cross-Site Scripting Zoho ManageEngine ServiceDesk Plus (SDP) < 10.0 build 10012 - Arbitrary File Upload WordPress Plugin WooCommerce - GloBee (cryptocurrency) Payment Gateway 1.1.1 - Payment Bypass / Unauthorized Order Status Spoofing macOS - Reverse (::1:4444/TCP) Shell (/bin/sh) +IPv6 Shellcode (119 bytes) macOS - Bind (4444/TCP) Shell (/bin/sh) + IPv6 Shellcode (129 bytes) macOS - Reverse (127.0.0.1:4444/TCP) Shell (/bin/sh) + Null-Free Shellcode (103 bytes) macOS - Bind (4444/TCP) Shell (/bin/sh) + Null-Free Shellcode (123 bytes) macOS - execve(/bin/sh) + Null-Free Shellcode (31 bytes)
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4.4 KiB
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4.4 KiB
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A heap-based out-of-bounds read was observed in Oracle Java Runtime Environment version 8u202 (latest at the time of this writing) while fuzz-testing the processing of TrueType fonts. It manifests itself in the form of the following (or similar) crash:
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--- cut ---
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Iteration (0,0)
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Iteration (0,1)
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#
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# A fatal error has been detected by the Java Runtime Environment:
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#
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# SIGSEGV (0xb) at pc=0x00007f857116fde3, pid=31542, tid=0x00007f85a5a70700
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#
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# JRE version: Java(TM) SE Runtime Environment (8.0_202-b08) (build 1.8.0_202-b08)
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# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.202-b08 mixed mode linux-amd64 compressed oops)
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# Problematic frame:
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# C [libt2k.so+0x4cde3] ExtractBitMap_blocClass+0xcc3
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#
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# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
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#
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# An error report file with more information is saved as:
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# jre/8u202/hs_err_pid31542.log
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#
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# If you would like to submit a bug report, please visit:
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# http://bugreport.java.com/bugreport/crash.jsp
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# The crash happened outside the Java Virtual Machine in native code.
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# See problematic frame for where to report the bug.
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#
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Aborted
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--- cut ---
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Under gdb, we can find out that the ExtractBitMap_blocClass function attempts to access an invalid memory region:
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--- cut ---
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gdb$ c
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Continuing.
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Iteration (0,0)
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Iteration (0,1)
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Thread 2 "java" received signal SIGSEGV, Segmentation fault.
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[----------------------------------registers-----------------------------------]
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RAX: 0x96e40 ('@n\t')
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RBX: 0x100c4
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RCX: 0x12dc8
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RDX: 0x757969c4
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RSI: 0x7ffff02f7238 --> 0x7840201008
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[...]
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[-------------------------------------code-------------------------------------]
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0x7fffbf616ddb <ExtractBitMap_blocClass+3259>: mov ecx,eax
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0x7fffbf616ddd <ExtractBitMap_blocClass+3261>: sar ecx,0x3
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0x7fffbf616de0 <ExtractBitMap_blocClass+3264>: movsxd rcx,ecx
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=> 0x7fffbf616de3 <ExtractBitMap_blocClass+3267>: movzx edi,BYTE PTR [rsi+rcx*1]
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0x7fffbf616de7 <ExtractBitMap_blocClass+3271>: cmp edx,r8d
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0x7fffbf616dea <ExtractBitMap_blocClass+3274>: jl 0x7fffbf616dd0 <ExtractBitMap_blocClass+3248>
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0x7fffbf616dec <ExtractBitMap_blocClass+3276>: mov ecx,r11d
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0x7fffbf616def <ExtractBitMap_blocClass+3279>: mov r13d,0x80
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[------------------------------------stack-------------------------------------]
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[...]
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[------------------------------------------------------------------------------]
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Legend: code, data, rodata, value
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Stopped reason: SIGSEGV
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0x00007fffbf616de3 in ExtractBitMap_blocClass () from jre/8u202/lib/amd64/libt2k.so
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--- cut ---
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The crash reproduces on both Windows and Linux platforms. On Windows, the crash manifests in the following way:
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--- cut ---
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(5218.154c): Access violation - code c0000005 (first chance)
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First chance exceptions are reported before any exception handling.
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This exception may be expected and handled.
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t2k!Java_sun_font_T2KFontScaler_getGlyphVectorOutlineNative+0x2155:
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00007ffa`0b8eb651 468a1c20 mov r11b,byte ptr [rax+r12] ds:00000000`64c09000=??
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0:004> ? rax
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Evaluate expression: 84720 = 00000000`00014af0
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0:004> ? r12
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Evaluate expression: 1690256656 = 00000000`64bf4510
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0:004> k
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# Child-SP RetAddr Call Site
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00 00000000`04a8e9d0 00007ffa`0b8ebf92 t2k!Java_sun_font_T2KFontScaler_getGlyphVectorOutlineNative+0x2155
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01 00000000`04a8eaa0 00007ffa`0b8e8e05 t2k!Java_sun_font_T2KFontScaler_getGlyphVectorOutlineNative+0x2a96
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02 00000000`04a8eb80 00007ffa`0b8e9011 t2k!Java_sun_font_T2KFontScaler_getGlyphCodeNative+0xd4fd
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03 00000000`04a8ebf0 00007ffa`0b8daeab t2k!Java_sun_font_T2KFontScaler_getGlyphCodeNative+0xd709
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04 00000000`04a8ec90 00000000`04f18d27 t2k!Java_sun_font_T2KFontScaler_getGlyphImageNative+0x163
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05 00000000`04a8ed60 00000000`02a3e1f8 0x4f18d27
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06 00000000`04a8ed68 00000000`04a8ee48 0x2a3e1f8
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07 00000000`04a8ed70 00000000`5c36dff8 0x4a8ee48
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08 00000000`04a8ed78 00000000`00000000 0x5c36dff8
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--- cut ---
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Attached with this report are three mutated testcases, and a simple Java program used to reproduce the vulnerability by loading TrueType fonts specified through a command-line parameter.
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/46411.zip |