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ebourg-guest pushed a commit to tag REL7_3_4
in repository libpostgresql-jdbc-java.

commit 433b7b97da262eb863e59b29161f9691a7e624c8
Author: Barry Lind <[email protected]>
Date:   Wed Jul 23 23:34:31 2003 +0000

    Patch to fix additional SQL injection vulnerabilities reported by Oliver 
Jowett
    and Dmitry Tkach
     Modified Files:
      Tag: REL7_3_STABLE
        jdbc/org/postgresql/Driver.java.in
        jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java
---
 org/postgresql/Driver.java.in                    |  2 +-
 org/postgresql/jdbc1/AbstractJdbc1Statement.java | 31 +++++++++++++++++++-----
 2 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/org/postgresql/Driver.java.in b/org/postgresql/Driver.java.in
index 164c1d0..241c588 100644
--- a/org/postgresql/Driver.java.in
+++ b/org/postgresql/Driver.java.in
@@ -446,6 +446,6 @@ public class Driver implements java.sql.Driver
        }
 
        //The build number should be incremented for every new build
-       private static int m_buildNumber = 111;
+       private static int m_buildNumber = 112;
 
 }
diff --git a/org/postgresql/jdbc1/AbstractJdbc1Statement.java 
b/org/postgresql/jdbc1/AbstractJdbc1Statement.java
index f41216d..925fc06 100644
--- a/org/postgresql/jdbc1/AbstractJdbc1Statement.java
+++ b/org/postgresql/jdbc1/AbstractJdbc1Statement.java
@@ -914,7 +914,7 @@ public abstract class AbstractJdbc1Statement implements 
org.postgresql.PGStateme
                                sbuf.setLength(0);
                                sbuf.ensureCapacity(x.length());
                                sbuf.append('\'');
-                               escapeString(x, sbuf);
+                               escapeString(x, sbuf, true);
                                sbuf.append('\'');
                                bind(parameterIndex, sbuf.toString(), type);
                        }
@@ -928,18 +928,37 @@ public abstract class AbstractJdbc1Statement implements 
org.postgresql.PGStateme
                {
                        sbuf.setLength(0);
                        sbuf.ensureCapacity(p_input.length());
-                       escapeString(p_input, sbuf);
+                       escapeString(p_input, sbuf, false);
                        return sbuf.toString();
                }
        }
 
-       private void escapeString(String p_input, StringBuffer p_output) {
+       /*
+        * p_allowStatementTerminator determines if a semi-colon is allowed in 
the
+        * returned value.  A semi-colon should only be allowed if the 
resulting 
+        * string will be enclosed in single quotes in a sql string, or will be 
+        * passed by value to the server via a bind thus bypassing the sql 
parser
+        * on the server.
+        */
+       private void escapeString(String p_input, StringBuffer p_output, 
boolean p_allowStatementTerminator) {
                for (int i = 0 ; i < p_input.length() ; ++i)
                {
                        char c = p_input.charAt(i);
-                       if (c == '\\' || c == '\'')
-                               p_output.append((char)'\\');
-                       p_output.append(c);
+                       switch (c)
+                       {
+                           case '\\':
+                           case '\'':
+                                       p_output.append('\\');
+                                       p_output.append(c);
+                                       break;
+                           case '\0':
+                                       throw new IllegalArgumentException("\\0 
not allowed");
+                           case ';':
+                                       if (!p_allowStatementTerminator)
+                                               throw new 
IllegalArgumentException("semicolon not allowed");
+                               default:
+                                       p_output.append(c);
+                       }
                }
        }
 

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