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Veritas Backup Exec Server 10.0.5484 is vulnerableThis is a discussion on "Veritas Backup Exec Server 10.0.5484 is vulnerable" within the Security discussions part of the Computer Security: Discussions section; maybe eEye will publish more details because as usual NGSS withholds the details of the hole , anyway might be good to start looking at this one nolimit I will try under free time. Mark Litchfield of NGSSoftware has discovered a ... |
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23-06-05
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 Veritas Backup Exec Server 10.0.5484 is vulnerable maybe eEye will publish more details because as usual NGSS withholds the details of the hole  , anyway might be good to start looking at this one nolimit  I will try under free time.Mark Litchfield of NGSSoftware has discovered a high risk vulnerability in the Veritas Backup Exec Server for Windows which can allow remote code execution. Affected Products include - Backup Exec 10.0 for Windows Servers rev. 5484 Backup Exec 9.1 for Windows Servers rev. 4691 Backup Exec 9.0 for Windows Servers rev. 4454 Backup Exec 9.0 for Windows Servers rev. 4367 A Patch can be obtained from - http://seer.support.veritas.com/docs/276607.htm Please note that the documentation provided by this link is partially incorrect and I believe it will be updated very shortly. ** Email Extract In 9.x, the Admin Plus Pack has to be installed in order for the vulnerability to exist. You are correct in 10.x it is vulnerable whether the Admin Pack is installed or not. So the workaround to disable the Admin Pack Option is only valid for a 9.x installation. On 10.0, applying the patch is required ** End Email Extract NGSSoftware are going to withhold details of this flaw for three months. Full details will be published on the 23rd of September 2005. This three month window will allow users of Veritas Backup Exec Server the time needed to apply the patch before the details are released to the general public. This reflects NGSSoftware's approach to responsible disclosure. NGSSoftware Insight Security Research http://www.ngssoftware.com http://www.databasesecurity.com/ +44(0)208 401 0070  |
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24-06-05
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| Indeed...its nasty. Indeed, so is v9.x and some v8. even , enterprise + ... seems port 6101 is the port attacked, so for a quickarse workaround (Im looking at a scanner-expoloit here..so its in use scanning), the fastest way to keep safe is block the port i guess.. then i dont really use that product to see why it needs so much remote, but it is definately being rapz0red ;o so yes, update. |
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24-06-05
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| ha no this is iDEFENSE this time rlsing much infos, hot :> Veritas Backup Exec Agent CONNECT_CLIENT_AUTH Buffer Overflow Vulnerability iDEFENSE Security Advisory 06.23.05 www.idefense.com/application/poi/displa ... rabilities June 23, 2005 I. BACKGROUND VERITAS Backup Exec is an advanced backup and restore solution for Microsoft Windows server environments. More information is available from the vendor's website: http://veritas.com/Products/www?c=product&refId=57 II. DESCRIPTION Exploitation of a buffer overflow vulnerability in Veritas Software Corp.'s Backup Exec allows remote attackers to execute arbitrary code. The Veritas Backup Exec Agent listens on TCP port 10000 and is responsible for accepting connections from the backup server when a backup is to occur. Typically the agent would be installed on most servers and important workstations in an enterprise environment. Veritas Backup Exec uses the standard NMDP protocol to communicate with the listening agents. The NMDP protocol allows multiple authentication types, including support for Windows user credentials. The vulnerability specifically exists because of insufficient input validation on CONNECT_CLIENT_AUTH requests. CONNECT_CLIENT_AUTH requests sent with an authentication method type "3," indicating Windows user credentials, and an overly long password argument can overflow the buffer and lead to arbitrary code execution. The overflow will copy the user-supplied password to the stack until it attempts to run off the page of memory. At this point, the SEH frame will be overwritten and the program will jump to a user-defined location when the page fault occurs. Debugger output showing control of execution from the SEH frame is detailed as follows: (1d8.b1c): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=00002001 ebx=0032ad78 ecx=0000037e edx=00fbedf8 esi=01045928 edi=00fc0000 eip=0141b77f esp=00fbedd8 ebp=0032c040 iopl=0 nv up ei pl nz na po nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010206 *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Program Files\VERITAS\Backup Exec\NT\beclass.dll - beclass!DeasciifyAndDecrypt+0xaf: 0141b77f f3a5 rep movsd ds:01045928=39784638 es:00fc0000=???????? 0:005> g (1d8.b1c): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=00000000 ebx=00000000 ecx=41424344 edx=7c9037d8 esi=00000000 edi=00000000 eip=41424344 esp=00fbea08 ebp=00fbea28 iopl=0 nv up ei pl zr na po nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246 41424344 ?? ??? 0:005> kp ChildEBP RetAddr WARNING: Frame IP not in any known module. Following frames may be wrong. 00fbea04 7c9037bf 0x41424344 00fbea28 7c90378b ntdll!RtlConvertUlongToLargeInteger+0x7a 00fbead8 7c90eafa ntdll!RtlConvertUlongToLargeInteger+0x46 0032c040 0032b470 ntdll!KiUserExceptionDispatcher+0xe 00000003 00000000 0x32b470 III. ANALYSIS Exploitation does not require authentication, thereby allowing any remote attacker to execute arbitrary code under the privileges of the Backup Exec Agent Browser (benetns.exe) process, which is usually a domain administrative account. Exploitation can occur fairly reliably since the overflow is able to control code execution via the structured exception handler. IV. DETECTION iDEFENSE has confirmed the existence of this vulnerability in Backup Exec for Windows Servers versions 9.1 and 10.0. It is suspected that other versions are also vulnerable. Several vendors ship or use Veritas software including Hitachi and NEC Corporation. V. WORKAROUND Use a firewall to restrict incoming connections to trusted workstations running the Backup Exec client software which uses port 10000 TCP. VI. VENDOR RESPONSE The vendor has addressed this vulnerability in security advisory VX05-002: http://seer.support.veritas.com/docs/276604.htm VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2005-0773 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 03/16/2005 Initial vendor notification 03/30/2005 Initial vendor response 06/22/2005 Coordinated public disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. Get paid for vulnerability research http://www.idefense.com/poi/teams/vcp.jsp Free tools, research and upcoming events http://labs.idefense.com X. LEGAL NOTICES Copyright (c) 2005 iDEFENSE, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDEFENSE. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please email customerservice@idefense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. |
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24-06-05
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| hopefully this isn't the actual hole that I have in a veritas product, but quite similiar ;> |
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25-06-05
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| haha yeah I saw that. I love how idefense is so descriptive in their advisories, makes research that much easier. When I get a chance I might make a POC for it, but I'm kinda busy this weekand and I'd have to look over the whole NDMP protocol to form the proper request. That is unless I just knab it with a packetsniffer. Anywho, I'll update later when I do more research on it  |
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25-06-05
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| to note that NDMP isnt a unique agent of BackupExec, there is prolly much more 'tas software vuln to this or similiar :> |
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25-06-05
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| btw kiddies are using http://www.metasploit.com/projects/Fram ... c_agent.pm to exploit it :> will see if I can code a scanner of it under free time. |
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26-06-05
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| this is possible to retrieve many infos via the NDMP protocol, you can have datas such: NDMP CONFIG_GET_HOST_INFO Code: 00000048 00 00 00 0a 47 56 2d 58 4f 45 52 44 45 58 00 00 ....GV-X OERDEX.. 00000058 00 00 00 0a 57 69 6e 64 6f 77 73 20 4e 54 00 00 ....Wind ows NT.. 00000068 00 00 00 8d 4d 61 6a 6f 72 20 56 65 72 73 69 6f ....Majo r Versio 00000078 6e 3d 35 20 4d 69 6e 6f 72 20 56 65 72 73 69 6f n=5 Mino r Versio 00000088 6e 3d 30 20 42 75 69 6c 64 20 4e 75 6d 62 65 72 n=0 Buil d Number 00000098 3d 32 31 39 35 20 53 65 72 76 69 63 65 50 61 63 =2195 Se rvicePac 000000A8 6b 20 4d 61 6a 6f 72 3d 34 20 53 65 72 76 69 63 k Major= 4 Servic 000000B8 65 50 61 63 6b 20 4d 69 6e 6f 72 3d 30 20 53 75 ePack Mi nor=0 Su 000000C8 69 74 65 4d 61 73 6b 3d 32 37 34 20 50 72 6f 64 iteMask= 274 Prod 000000D8 75 63 74 54 79 70 65 3d 32 20 50 72 6f 63 65 73 uctType= 2 Proces 000000E8 73 6f 72 54 79 70 65 3d 49 6e 74 65 6c 20 78 38 sorType= Intel x8 000000F8 36 00 00 00 00 00 00 0d 58 58 58 2e 58 58 2e 58 6....... XXX.XX.X 00000108 58 58 2e 58 58 00 00 00 XX.XX... |
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26-06-05
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| this source took from ethereal0.10.11 helps so to understand how is working NDMP protocol (all various packets request/reply over TCP/IP)and so on this vulnerability exploitation. |
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26-06-05
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| have compared tons of requests with LOG, CONNECT, CONFIG, between bexec sp0-sp1 vuln/patched, havent caught something helping to determine the vulnerability, if anyone see let me know. |
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| 1005484, backup, exec, server, veritas, vulnerable | |
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LinkBack to this Thread: http://heapoverflow.com/f0rums/security-discussions/929-veritas-backup-exec-server-10-0-5484-vulnerable.html | ||||
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| server - Members and Communities tagged with server - Zoints | This thread | Refback | 07-01-08 14:20 | |
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