Summary: | sys-apps/sharutils | ||
---|---|---|---|
Product: | Gentoo Linux | Reporter: | Daniel Ahlberg (RETIRED) <aliz> |
Component: | New packages | Assignee: | Gentoo Security <security> |
Status: | RESOLVED FIXED | ||
Severity: | critical | ||
Priority: | Lowest | ||
Version: | unspecified | ||
Hardware: | x86 | ||
OS: | Linux | ||
Whiteboard: | |||
Package list: | Runtime testing required: | --- |
Description
Daniel Ahlberg (RETIRED)
2002-10-29 05:21:47 UTC
Proposed patches: --- sharutils-4.2.1/src/uudecode.c.orig Sat Apr 13 01:26:31 2002 +++ sharutils-4.2.1/src/uudecode.c Sat Apr 13 01:30:32 2002 @@ -81,6 +81,9 @@ /* Single character decode. */ #define DEC(Char) (((Char) - ' ') & 077) +#if !defined S_ISLNK && defined S_IFLNK +# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) +#endif static int read_stduu (inname) @@ -279,6 +282,7 @@ char buf[2 * BUFSIZ]; char *outname; int do_base64 = 0; + struct stat attr; /* Search for header line. */ @@ -337,6 +341,23 @@ } } + /* Check out file if it exists */ + if (strcmp (outname, "/dev/stdout") != 0 && strcmp (outname, "-") != 0 + && !access(outname, F_OK)) { + if (lstat(outname, &attr) == -1) { + error (0, errno, _("cannot access %s"), outname); + return 1; + } + if (S_ISFIFO(attr.st_mode)){ + error (0, errno, _("denied writing FIFO (%s)"), outname); + return 1; + } + if (S_ISLNK(attr.st_mode)) { + error (0, errno, _("not following symlink (%s)"), outname); + return 1; + } + } + /* Create output file and set mode. */ if (strcmp (outname, "/dev/stdout") != 0 && strcmp (outname, "-") != 0 --- sharutils-4.2.1/src/mailshar.in.orig Fri May 11 21:45:29 2001 +++ sharutils-4.2.1/src/mailshar.in Fri May 11 21:50:40 2001 @@ -33,7 +33,11 @@ If none of -MTBzZ are given, -z is automatically selected if *none* of the FILEs have an .arc, .exz, .gif, .z, .gz, .Z, .zip or .zoo suffix." -temp=/usr/tmp/$$.shar +temp=`mktemp -q /tmp/$0.XXXXXX` +if [ $? -ne 0 ]; then + echo "$0: Can't create temp file, exiting..." + exit 1 +fi ### Decode the options. |