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Red Hat Bugzilla – Attachment 275841 Details for
Bug 408811
CVE-2007-5963 kdm: local DoS vulnerability
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[patch]
Upstream patch
post-3.5.8-kdebase-kdm.diff (text/plain), 921 bytes, created by
Tomas Hoger
on 2007-12-03 16:28:39 UTC
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Description:
Upstream patch
Filename:
MIME Type:
Creator:
Tomas Hoger
Created:
2007-12-03 16:28:39 UTC
Size:
921 bytes
patch
obsolete
>--- kdm/backend/inifile.c >+++ kdm/backend/inifile.c >@@ -37,6 +37,7 @@ > #include "dm_error.h" > > #include <sys/types.h> >+#include <sys/stat.h> > #include <unistd.h> > #include <stdlib.h> > #include <string.h> >@@ -47,17 +48,27 @@ > { > char *data; > int fd, len; >+ struct stat st; > > if ((fd = open( fname, O_RDONLY | O_NONBLOCK )) < 0) { > Debug( "cannot open ini-file %\"s: %m", fname ); > return 0; > } >- len = lseek( fd, 0, SEEK_END ); >+ if (fstat( fd, &st ) || !S_ISREG( st.st_mode )) { >+ LogWarn( "Ini-file %\"s is no regular file\n", fname ); >+ close( fd ); >+ return 0; >+ } >+ if (st.st_size >= 0x10000) { >+ LogWarn( "Ini-file %\"s is too big\n", fname ); >+ close( fd ); >+ return 0; >+ } >+ len = st.st_size; > if (!(data = Malloc( len + 2 ))) { > close( fd ); > return 0; > } >- lseek( fd, 0, SEEK_SET ); > if (read( fd, data, len ) != len) { > Debug( "cannot read ini-file %\"s: %m", fname ); > free( data );
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