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stricter fix for oflow

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This commit is contained in:
dugsong 1999-12-12 18:38:51 +00:00
parent 0a395a6dd2
commit 037ce8dad2
2 changed files with 11 additions and 15 deletions
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24
security/rsaref/patches/patch-ac
View File

@ -1,42 +1,38 @@
--- rsa.c.orig Fri Mar 25 14:01:48 1994
+++ rsa.c Wed Dec 1 23:01:22 1999
@@ -33,6 +33,9 @@
--- rsa.c.orig Sun Dec 12 13:31:52 1999
+++ rsa.c Sun Dec 12 13:35:12 1999
@@ -33,6 +33,8 @@
unsigned char byte, pkcsBlock[MAX_RSA_MODULUS_LEN];
unsigned int i, modulusLen;
+ if (inputLen + 3 > MAX_RSA_MODULUS_LEN)
+ if (publicKey->bits > MAX_RSA_MODULUS_BITS)
+ return (RE_LEN);
+
modulusLen = (publicKey->bits + 7) / 8;
if (inputLen + 11 > modulusLen)
return (RE_LEN);
@@ -78,6 +81,9 @@
@@ -78,6 +80,8 @@
unsigned char pkcsBlock[MAX_RSA_MODULUS_LEN];
unsigned int i, modulusLen, pkcsBlockLen;
+ if (inputLen > MAX_RSA_MODULUS_LEN)
+ if (publicKey->bits > MAX_RSA_MODULUS_BITS)
+ return (RE_LEN);
+
modulusLen = (publicKey->bits + 7) / 8;
if (inputLen > modulusLen)
return (RE_LEN);
@@ -129,6 +135,9 @@
@@ -129,6 +133,8 @@
unsigned char pkcsBlock[MAX_RSA_MODULUS_LEN];
unsigned int i, modulusLen;
+ if (inputLen + 3 > MAX_RSA_MODULUS_LEN)
+ if (privateKey->bits > MAX_RSA_MODULUS_BITS)
+ return (RE_LEN);
+
modulusLen = (privateKey->bits + 7) / 8;
if (inputLen + 11 > modulusLen)
return (RE_LEN);
@@ -168,6 +177,9 @@
@@ -168,6 +174,8 @@
unsigned char pkcsBlock[MAX_RSA_MODULUS_LEN];
unsigned int i, modulusLen, pkcsBlockLen;
+ if (inputLen > MAX_RSA_MODULUS_LEN)
+ if (privateKey->bits > MAX_RSA_MODULUS_BITS)
+ return (RE_LEN);
+
modulusLen = (privateKey->bits + 7) / 8;
if (inputLen > modulusLen)
return (RE_LEN);

2
security/rsaref/pkg/SECURITY
View File

@ -1,4 +1,4 @@
patch-ac fixes the buffer overflow in RSA{Private,Public}Decrypt(),
patch-ac fixes the buffer overflow in RSA{Private,Public}{De,En}crypt(),
as published by CORE SDI in their advisory of Dec. 1, 1999.