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14991 changes to exploits/shellcodes HTC Touch - vCard over IP Denial of Service TeamSpeak 3.0.0-beta25 - Multiple Vulnerabilities PeerBlock 1.1 - Blue Screen of Death WS10 Data Server - SCADA Overflow (PoC) Symantec Endpoint Protection 12.1.4013 - Service Disabling Memcached 1.4.33 - 'Crash' (PoC) Memcached 1.4.33 - 'Add' (PoC) Memcached 1.4.33 - 'sasl' (PoC) Memcached 1.4.33 - 'Crash' (PoC) Memcached 1.4.33 - 'Add' (PoC) Memcached 1.4.33 - 'sasl' (PoC) Alcatel-Lucent (Nokia) GPON I-240W-Q - Buffer Overflow man-db 2.4.1 - 'open_cat_stream()' Local uid=man CDRecord's ReadCD - '$RSH exec()' SUID Shell Creation CDRecord's ReadCD - Local Privilege Escalation Anyburn 4.3 x86 - 'Copy disc to image file' Buffer Overflow (Unicode) (SEH) FreeBSD - Intel SYSRET Privilege Escalation (Metasploit) CCProxy 6.2 - 'ping' Remote Buffer Overflow Savant Web Server 3.1 - Remote Buffer Overflow (2) Litespeed Web Server 4.0.17 with PHP (FreeBSD) - Remote Overflow Alcatel-Lucent (Nokia) GPON I-240W-Q - Buffer Overflow QNAP TS-431 QTS < 4.2.2 - Remote Command Execution (Metasploit) Imperva SecureSphere 13.x - 'PWS' Command Injection (Metasploit) Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize() Remote Command Execution (Metasploit) Oracle Weblogic Server - Deserialization Remote Command Execution (Patch Bypass) TeamCity < 9.0.2 - Disabled Registration Bypass OpenSSH SCP Client - Write Arbitrary Files Kados R10 GreenBee - Multiple SQL Injection WordPress Core 5.0 - Remote Code Execution phpBB 3.2.3 - Remote Code Execution Linux/x86 - Create File With Permission 7775 + exit() Shellcode (Generator) Linux/x86 - setreuid(0_0) + execve(/bin/ash_NULL_NULL) + XOR Encoded Shellcode (58 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/csh__ [/bin/csh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/ksh__ [/bin/ksh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/zsh__ [/bin/zsh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(/bin/ash_NULL_NULL) + XOR Encoded Shellcode (58 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/csh__ [/bin/csh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/ksh__ [/bin/ksh_ NULL]) + XOR Encoded Shellcode (53 bytes) Linux/x86 - setreuid(0_0) + execve(_/bin/zsh__ [/bin/zsh_ NULL]) + XOR Encoded Shellcode (53 bytes)
74 lines
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2.3 KiB
Text
74 lines
No EOL
2.3 KiB
Text
source: https://www.securityfocus.com/bid/233/info
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A modified SMB client can mount shares on an SMB host by passing the username and corresponding LanMan hash of an account that is authorized to access the host and share. The modified SMB client removes the need for the user to "decrypt" the password hash into its clear-text equivalent.
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Paul Ashton <paul@EIGEN.CO.UK> posted the theory and corresponding exploit code to NTBugtraq. In order for his code to work, you must "exist both in /etc/passwd and /usr/local/samba/private/smbpasswd as the same username and same uid as your rid in NT, and smbclient can read it".
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In order for this to be used in a malicious manner, the attacker must first obtain a valid username and LanMan hash for a user account known to have access permissions to the resource on the remote NT host.
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*** orig_client.c Tue Apr 8 17:27:29 1997
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--- client.c Tue Apr 8 20:57:43 1997
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***************
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*** 3020,3026 ****
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{-1,NULL}
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};
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-
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/****************************************************************************
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send a login command
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****************************************************************************/
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--- 3020,3025 ----
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***************
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*** 3039,3044 ****
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--- 3038,3061 ----
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int numprots;
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int tries=0;
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+ #ifdef USESMBPASSWDFILE
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+ /*TODO check for valid password and uid = getuid */
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+ BOOL got_encpass;
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+ struct passwd *pwd;
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+ struct smb_passwd *smb_pass;
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+ unsigned char p21[21];
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+
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+ memset(p21, 0, sizeof p21);
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+ pwd = getpwuid(getuid());
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+ if (pwd && (smb_pass = get_smbpwnam(pwd->pw_name)))
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+ {
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+ strcpy(password, "not empty");
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+ got_pass = got_encpass = True;
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+ memcpy(p21, smb_pass->smb_passwd, 16);
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+ }
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+ setuid(getuid());
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+ #endif
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+
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if (was_null)
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{
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inbuf = (char *)malloc(BUFFER_SIZE + SAFETY_MARGIN);
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***************
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*** 3189,3194 ****
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--- 3205,3215 ----
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if (doencrypt && *pass) {
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DEBUG(3,("Using encrypted passwords\n"));
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passlen = 24;
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+
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+ #ifdef USESMBPASSWDFILE
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+ if (got_encpass) E_P24(p21,cryptkey,pword);
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+ else
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+ #endif
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SMBencrypt(pass,cryptkey,pword);
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}
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#else
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***************
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*** 3252,3257 ****
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--- 3273,3281 ----
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(CVAL(inbuf,smb_rcls) == ERRSRV &&
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SVAL(inbuf,smb_err) == ERRbadpw)))
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{
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+ #ifdef USESMBPASSWDFILE
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+ got_encpass =
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+ #endif
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got_pass = False;
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DEBUG(3,("resending login\n"));
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goto get_pass; |