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Date: Mon, 11 Oct 2010 11:07:37 +0800 From: watercloud watercloud <watercloud@...cus.org> To: bugtraq@...urityfocus.com Subject: ubuntu 10.04 xterm heap overflow,can it be exploit ? Hi,all ! I find xterm on ubuntu 10.04 have a local heap overflow, I don't known that can it be exploit on glibc 2.11 . detail : watercloud@...ntu:~/Downloads$ ls -l `which xterm` -rwxr-sr-x 1 root utmp 354444 2010-03-31 17:47 /usr/bin/xterm watercloud@...ntu:~/Downloads$ xterm -fb `perl -e 'print "A"x4000'` *** glibc detected *** xterm: munmap_chunk(): invalid pointer: 0x080bd314 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6(+0x6b591)[0x243591] /lib/tls/i686/cmov/libc.so.6(+0x6c80e)[0x24480e] xterm[0x8062c70] xterm[0x8064b34] xterm[0x805515d] /usr/lib/libXt.so.6(+0x23e30)[0x4a2e30] /usr/lib/libXt.so.6(+0x23fb5)[0x4a2fb5] /usr/lib/libXt.so.6(XtRealizeWidget+0x9d)[0x4a325d] xterm[0x8058176] xterm[0x8069a08] xterm[0x806bf78] /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6)[0x1eebd6] xterm[0x804d6a1] ======= Memory map: ======== 00110000-0012b000 r-xp 00000000 08:01 147 /lib/ld-2.11.1.so 0012b000-0012c000 r--p 0001a000 08:01 147 /lib/ld-2.11.1.so 0012c000-0012d000 rw-p 0001b000 08:01 147 /lib/ld-2.11.1.so 0012d000-0012e000 r-xp 00000000 00:00 0 [vdso] 0012e000-00140000 r-xp 00000000 08:01 4191 /usr/lib/libXft.so.2.1.13 00140000-00141000 r--p 00011000 08:01 4191 /usr/lib/libXft.so.2.1.13 00141000-00142000 rw-p 00012000 08:01 4191 /usr/lib/libXft.so.2.1.13 00142000-00198000 r-xp 00000000 08:01 2715 /usr/lib/libXaw7.so.7.0.0 00198000-00199000 r--p 00055000 08:01 2715 /usr/lib/libXaw7.so.7.0.0 00199000-0019f000 rw-p 00056000 08:01 2715 /usr/lib/libXaw7.so.7.0.0 0019f000-001a0000 rw-p 00000000 00:00 0 001a0000-001d4000 r-xp 00000000 08:01 4408 /lib/libncurses.so.5.7 001d4000-001d5000 ---p 00034000 08:01 4408 /lib/libncurses.so.5.7 001d5000-001d7000 r--p 00034000 08:01 4408 /lib/libncurses.so.5.7 001d7000-001d8000 rw-p 00036000 08:01 4408 /lib/libncurses.so.5.7 001d8000-0032b000 r-xp 00000000 08:01 1050745 /lib/tls/i686/cmov/libc-2.11.1.so 0032b000-0032c000 ---p 00153000 08:01 1050745 /lib/tls/i686/cmov/libc-2.11.1.so 0032c000-0032e000 r--p 00153000 08:01 1050745 /lib/tls/i686/cmov/libc-2.11.1.so 0032e000-0032f000 rw-p 00155000 08:01 1050745 /lib/tls/i686/cmov/libc-2.11.1.so 0032f000-00332000 rw-p 00000000 00:00 0 00332000-00360000 r-xp 00000000 08:01 850 /usr/lib/libfontconfig.so.1.4.4 00360000-00361000 r--p 0002d000 08:01 850 /usr/lib/libfontconfig.so.1.4.4 00361000-00362000 rw-p 0002e000 08:01 850 /usr/lib/libfontconfig.so.1.4.4 00362000-0047b000 r-xp 00000000 08:01 4046 /usr/lib/libX11.so.6.3.0 0047b000-0047c000 r--p 00118000 08:01 4046 /usr/lib/libX11.so.6.3.0 0047c000-0047e000 rw-p 00119000 08:01 4046 /usr/lib/libX11.so.6.3.0 0047e000-0047f000 rw-p 00000000 00:00 0 0047f000-004ce000 r-xp 00000000 08:01 3718 /usr/lib/libXt.so.6.0.0 004ce000-004cf000 r--p 0004e000 08:01 3718 /usr/lib/libXt.so.6.0.0 004cf000-004d2000 rw-p 0004f000 08:01 3718 /usr/lib/libXt.so.6.0.0 004d2000-004e7000 r-xp 00000000 08:01 2723 /usr/lib/libXmu.so.6.2.0 004e7000-004e8000 r--p 00014000 08:01 2723 /usr/lib/libXmu.so.6.2.0 004e8000-004e9000 rw-p 00015000 08:01 2723 /usr/lib/libXmu.so.6.2.0 004e9000-004fe000 r-xp 00000000 08:01 4016 /usr/lib/libICE.so.6.3.0 004fe000-004ff000 r--p 00014000 08:01 4016 /usr/lib/libICE.so.6.3.0 004ff000-00500000 rw-p 00015000 08:01 4016 /usr/lib/libICE.so.6.3.0 00500000-00502000 rw-p 00000000 00:00 0 00502000-00573000 r-xp 00000000 08:01 2033 /usr/lib/libfreetype.so.6.3.22 00573000-00577000 r--p 00070000 08:01 2033 /usr/lib/libfreetype.so.6.3.22 00577000-00578000 rw-p 00074000 08:01 2033 /usr/lib/libfreetype.so.6.3.22 00578000-00580000 r-xp 00000000 08:01 4050 /usr/lib/libXrender.so.1.3.0 00580000-00581000 r--p 00007000 08:01 4050 /usr/lib/libXrender.so.1.3.0 00581000-00582000 rw-p 00008000 08:01 4050 /usr/lib/libXrender.so.1.3.0 00582000-00590000 r-xp 00000000 08:01 4091 /usr/lib/libXext.so.6.4.0 00590000-00591000 r--p 0000d000 08:01 4091 /usr/lib/libXext.so.6.4.0 00591000-00592000 rw-p 0000e000 08:01 4091 /usr/lib/libXext.so.6.4.0 00592000-005a1000 r-xp 00000000 08:01 2709 /usr/lib/libXpm.so.4.11.0 005a1000-005a2000 r--p 0000e000 08:01 2709 /usr/lib/libXpm.so.4.11.0 005a2000-005a3000 rw-p 0000f000 08:01 2709 /usr/lib/libXpm.so.4.11.0 005a3000-005a5000 r-xp 00000000 08:01 1053685 /lib/tls/i686/cmov/libdl-2.11.1.so 005a5000-005a6000 r--p 00001000 08:01 1053685 /lib/tls/i686/cmov/libdl-2.11.1.so 005a6000-005a7000 rw-p 00002000 08:01 1053685 /lib/tls/i686/cmov/libdl-2.11.1.so 005a7000-005ba000 r-xp 00000000 08:01 4125 /lib/libz.so.1.2.3.3 005ba000-005bb000 r--p 00012000 08:01 4125 /lib/libz.so.1.2.3.3 005bb000-005bc000 rw-p 00013000 08:01 4125 /lib/libz.so.1.2.3.3 005bc000-005e0000 r-xp 00000000 08:01 90 /lib/libexpat.so.1.5.2 005e0000-005e2000 r--p 00024000 08:01 90 /lib/libexpat.so.1.5.2 005e2000-005e3000 rw-p 00026000 08:01 90 /lib/libexpat.so.1.5.2 005e3000-005fb000 r-xp 00000000 08:01 4032 /usr/lib/libxcb.so.1.1.0 005fb000-005fc000 r--p 00017000 08:01 4032 /usr/lib/libxcb.so.1.1.0 005fc000-005fd000 rw-p 00018000 08:01 4032 /usr/lib/libxcb.so.1.1.0 005fd000-00604000 r-xp 00000000 08:01 44 /usr/lib/libSM.so.6.0.1 00604000-00605000 r--p 00006000 08:01 44 /usr/lib/libSM.so.6.0.1 00605000-00606000 rw-p 00007000 08:01 44 /usr/lib/libSM.so.6.0.1 00606000-00608000 r-xp 00000000 08:01 2195 /usr/lib/libXau.so.6.0.0 00608000-00609000 r--p 00001000 08:01 2195 /usr/lib/libXau.so.6.0.0 00609000-0060a000 rw-p 00002000 08:01 2195 /usr/lib/libXau.so.6.0.0 0060a000-0060e000 r-xp 00000000 08:01 3970 /usr/lib/libXdmcp.so.6.0.0 0060e000-0060f000 r--p 00003000 08:01 3970 /usr/lib/libXdmcp.so.6.0.0 0060f000-00610000 rw-p 00004000 08:01 3970 /usr/lib/libXdmcp.so.6.0.0 00610000-00613000 r-xp 00000000 08:01 811 /lib/libuuid.so.1.3.0 00613000-00614000 r--p 00002000 08:01 811 /lib/libuuid.so.1.3.0 00614000-00615000 rw-p 00003000 08:01 811 /lib/libuuid.so.1.3.0 00615000-0061d000 r-xp 00000000 08:01 3644 /usr/lib/libXcursor.so.1.0.2 0061d000-0061e000 r--p 00007000 08:01 3644 /usr/lib/libXcursor.so.1.0.2 0061e000-0061f000 rw-p 00008000 08:01 3644 /usr/lib/libXcursor.so.1.0.2 0061f000-00623000 r-xp 00000000 08:01 4112 /usr/lib/libXfixes.so.3.1.0 00623000-00624000 r--p 00003000 08:01 4112 /usr/lib/libXfixes.so.3.1.0 00624000-00625000 rw-p 00004000 08:01 4112 /usr/lib/libXfixes.so.3.1.0 00625000-00642000 r-xp 00000000 08:01 1463 /lib/libgcc_s.so.1 00642000-00643000 r--p 0001c000 08:01 1463 /lib/libgcc_s.so.1 00643000-00644000 rw-p 0001d000 08:01 1463 /lib/libgcc_s.so.1 08048000-08099000 r-xp 00000000 08:01 2848 /usr/bin/xterm 08099000-0809a000 r--p 00050000 08:01 2848 /usr/bin/xterm 0809a000-080a0000 rw-p 00051000 08:01 2848 /usr/bin/xterm 080a0000-080e5000 rw-p 00000000 00:00 0 [heap] b7e4c000-b7e8b000 r--p 00000000 08:01 393224 /usr/lib/locale/zh_CN.utf8/LC_CTYPE b7e8b000-b7fdd000 r--p 00000000 08:01 393276 /usr/lib/locale/zh_CN.utf8/LC_COLLATE
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