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Key: CORE-2576
Type: Bug Bug
Status: Closed Closed
Resolution: Fixed
Priority: Major Major
Assignee: Adriano dos Santos Fernandes
Reporter: Adriano dos Santos Fernandes
Votes: 0
Watchers: 0

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Firebird Core

Server may crash parsing wrong or truncated BLR

Created: 27/Jul/09 09:55 AM   Updated: 07/Aug/16 01:11 PM
Component/s: Engine
Affects Version/s: 2.0.0, 1.5.4, 2.0.1, 2.0.2, 2.0.3, 1.5.5, 2.1.0, 2.0.4, 2.5 Alpha 1, 2.1.1, 2.0.5, 2.1.2, 2.5 Beta 1
Fix Version/s: 2.5 RC1

QA Status: Cannot be tested

 Description  « Hide
BLR is read on a buffer and passed for parse without inform a length. The BLR is parsed until a blr_eoc is found.

If the buffer doesn't end with blr_eoc, the parser will continue reading unallocated memory. If it reads some byte in a not committed page memory, a read access violation will occur and the server will crash.

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