Remote DOS BrightStor ARCserve Backup for Laptops & Desktops

Risk: High
Local: No
Remote: Yes
CWE: CWE-119

CVSS Base Score: 7.8/10
Impact Subscore: 6.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

======= Summary ======= Today: 31 January 2007 Reference: NGS00402 Discover: Mark Litchfield Name: Remote DOS BrightStor ARCserve Backup for Laptops & Desktops r11.1 Vendor: Computer Associates Systems Affected: BrightStor ARCserve Backup for Laptops & Desktops r11.1 Risk: High Status: Published ======== TimeLine ======== Discovered: 19 June 2006 Released: 19 June 2006 Approved: 19 June 2006 Reported: 22 June 2006 Fixed: 23 January 2007 Published: 30 January 2007 =========== Description =========== By sending a specially crafted series of packets to the LGSERVER.EXE process that listens on TCP port 2200, it is possible to cause the process to terminate. ================= Technical Details ================= During the authentication negotiation, the third client packet at HEX address (DWORD) 0x11 - 0x14 in the third client packet specifies a data length. Setting this this value to 0xff 0xff 0xff 0xff causes a read access violation to occur, terminating the process. ************************************************************************ ********************************************* =============== Fix Information =============== -notice.asp NGSSoftware Insight Security Research +44(0)208 401 0070 -- E-MAIL DISCLAIMER The information contained in this email and any subsequent correspondence is private, is solely for the intended recipient(s) and may contain confidential or privileged information. For those other than the intended recipient(s), any disclosure, copying, distribution, or any other action taken, or omitted to be taken, in reliance on such information is prohibited and may be unlawful. If you are not the intended recipient and have received this message in error, please inform the sender and delete this mail and any attachments. The views expressed in this email do not necessarily reflect NGS policy. NGS accepts no liability or responsibility for any onward transmission or use of emails and attachments having left the NGS domain. NGS and NGSSoftware are trading names of Next Generation Security Software Ltd. Registered office address: 52 Throwley Way, Sutton, SM1 4BF with Company Number 04225835 and VAT Number 783096402

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