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Talk:Testing for SQL Wildcard Attacks (OWASP-DS-001) - Revision history
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https://wiki.owasp.org/index.php?title=Talk:Testing_for_SQL_Wildcard_Attacks_(OWASP-DS-001)&diff=49208&oldid=prev
KirstenS: Talk:Testing for SQL Wildcard Attacks moved to Talk:Testing for SQL Wildcard Attacks (OWASP-DS-001)
2008-12-15T22:54:57Z
<p><a href="/index.php/Talk:Testing_for_SQL_Wildcard_Attacks" class="mw-redirect" title="Talk:Testing for SQL Wildcard Attacks">Talk:Testing for SQL Wildcard Attacks</a> moved to <a href="/index.php/Talk:Testing_for_SQL_Wildcard_Attacks_(OWASP-DS-001)" title="Talk:Testing for SQL Wildcard Attacks (OWASP-DS-001)">Talk:Testing for SQL Wildcard Attacks (OWASP-DS-001)</a></p>
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KirstenS
https://wiki.owasp.org/index.php?title=Talk:Testing_for_SQL_Wildcard_Attacks_(OWASP-DS-001)&diff=36815&oldid=prev
Marco at 06:47, 22 August 2008
2008-08-22T06:47:55Z
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This <del class="diffchange diffchange-inline">section could </del>be <del class="diffchange diffchange-inline">expanded </del>to <del class="diffchange diffchange-inline">talk about </del>algorithmic complexity attacks, of <del class="diffchange diffchange-inline">which the SQL wildcard attack seems </del>to <del class="diffchange diffchange-inline">be a subclass</del>:</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This <ins class="diffchange diffchange-inline">seems to mix two vulnerabilities/attacks. One consists of bypassing indexes that are defined on a table. In the search box example, if the user searches for, say, "foo", the database can use indexes to quickly locate the matching records. If the user inputs "*", no index can </ins>be <ins class="diffchange diffchange-inline">found and the entire table has </ins>to <ins class="diffchange diffchange-inline">be scanned, which is expensive and unwanted. Possible fixes here: write better queries (for example, stop after finding N matches), filter input to remove metacharacters.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">The second attack class is </ins>algorithmic complexity attacks<ins class="diffchange diffchange-inline">. There's a nice description (and it's the standard reference) at http://www.cs.rice.edu/~scrosby/hash/ Essentially, in many cases</ins>, <ins class="diffchange diffchange-inline">input can be crafted so that the performance </ins>of <ins class="diffchange diffchange-inline">several data structures and algorithms on them (most notably, hash functions and regular expressions) can be degraded </ins>to <ins class="diffchange diffchange-inline">its worst case. Some references</ins>:</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* http://www.cs.rice.edu/~scrosby/hash/ (hash functions)</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* http://www.cs.rice.edu/~scrosby/hash/ (hash functions)</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* http://www.cs.rice.edu/~scrosby/hash/slides/USENIX-RegexpWIP.2.ppt (regular expression)</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* http://www.usenix.org/event/woot08/tech/full_papers/drewry/drewry_html/ (regular expression)</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* http://www.usenix.org/event/woot08/tech/full_papers/drewry/drewry_html/ (regular expression)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[User:Marco|Marco]] 02:34, 22 August 2008 (EDT)</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[User:Marco|Marco]] 02:34, 22 August 2008 (EDT)</div></td></tr>
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Marco
https://wiki.owasp.org/index.php?title=Talk:Testing_for_SQL_Wildcard_Attacks_(OWASP-DS-001)&diff=36809&oldid=prev
Marco at 06:34, 22 August 2008
2008-08-22T06:34:51Z
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 06:34, 22 August 2008</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. [[User:Rick.mitchell|Rick.mitchell]] 10:17, 13 August 2008 (EDT)</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. [[User:Rick.mitchell|Rick.mitchell]] 10:17, 13 August 2008 (EDT)</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">----</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">This section could be expanded to talk about algorithmic complexity attacks, of which the SQL wildcard attack seems to be a subclass:</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* http://www.cs.rice.edu/~scrosby/hash/ (hash functions)</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* http://www.usenix.org/event/woot08/tech/full_papers/drewry/drewry_html/ (regular expression)</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[User:Marco|Marco]] 02:34, 22 August 2008 (EDT)</ins></div></td></tr>
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Marco
https://wiki.owasp.org/index.php?title=Talk:Testing_for_SQL_Wildcard_Attacks_(OWASP-DS-001)&diff=35935&oldid=prev
Rick.mitchell at 14:19, 13 August 2008
2008-08-13T14:19:12Z
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== v3 Reviewer Notes ==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>== v3 Reviewer Notes ==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. [[User:Rick.mitchell|Rick.mitchell]] 10:17, 13 August 2008 (EDT)</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. [[User:Rick.mitchell|Rick.mitchell]] 10:17, 13 August 2008 (EDT)</div></td></tr>
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Rick.mitchell
https://wiki.owasp.org/index.php?title=Talk:Testing_for_SQL_Wildcard_Attacks_(OWASP-DS-001)&diff=35934&oldid=prev
Rick.mitchell at 14:19, 13 August 2008
2008-08-13T14:19:00Z
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 14:19, 13 August 2008</td>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. [[User:Rick.mitchell|Rick.mitchell]] 10:17, 13 August 2008 (EDT)</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. [[User:Rick.mitchell|Rick.mitchell]] 10:17, 13 August 2008 (EDT)</div></td></tr>
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Rick.mitchell
https://wiki.owasp.org/index.php?title=Talk:Testing_for_SQL_Wildcard_Attacks_(OWASP-DS-001)&diff=35933&oldid=prev
Rick.mitchell: New page: :: v3 Reviewer Notes:: I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. ~~~~
2008-08-13T14:17:59Z
<p>New page: :: v3 Reviewer Notes:: I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. ~~~~</p>
<p><b>New page</b></p><div>:: v3 Reviewer Notes::<br />
<br />
I don't think we should list "%" as an "extra" wildcard as it is the standard SQL (Oracle, MS, My, etc) wildcard. [[User:Rick.mitchell|Rick.mitchell]] 10:17, 13 August 2008 (EDT)</div>
Rick.mitchell