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Red Hat Bugzilla – Attachment 280721 Details for
Bug 415131
CVE-2007-5849 CUPS SNMP backend buffer overflow
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[patch]
Correct supplied patch
cups-vendorsec1-patch.txt (text/plain), 935 bytes, created by
Mark J. Cox
on 2007-12-07 06:31:34 UTC
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Description:
Correct supplied patch
Filename:
MIME Type:
Creator:
Mark J. Cox
Created:
2007-12-07 06:31:34 UTC
Size:
935 bytes
patch
obsolete
>=================================================================== >--- backend/snmp.c (revision 530) >+++ backend/snmp.c (working copy) >@@ -1064,18 +1064,38 @@ > char *string, /* I - String buffer */ > int strsize) /* I - String buffer size */ >{ >- if (length < strsize) >+ if (length < 0) > { >- memcpy(string, *buffer, length); >+ /* >+ * Disallow negative lengths! >+ */ >+ >+ fprintf(stderr, "ERROR: Bad ASN1 string length %d!\n", length); >+ *string = '\0'; >+ } >+ else if (length < strsize) >+ { >+ /* >+ * String is smaller than the buffer... >+ */ >+ >+ if (length > 0) >+ memcpy(string, *buffer, length); >+ > string[length] = '\0'; > } > else > { >+ /* >+ * String is larger than the buffer... >+ */ >+ > memcpy(string, buffer, strsize - 1); > string[strsize - 1] = '\0'; > } > >- (*buffer) += length; >+ if (length > 0) >+ (*buffer) += length; > > return (string); >}
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