** Changed in: ax25-tools (Debian)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/353219
Title:
beacon crashes if the length of the destination exceeds 20
Status in “ax25-tools” package in Ubuntu:
Fix Released
Status in “ax25-tools” package in Debian:
Fix Released
Bug description:
Binary package hint: ax25-tools
The beacon tool crashes if the length of the -d parameter (destination
calls and digipeater path) exceeds a length of 20 characters. This
seems to happen because the destination path (char *destcall) is
copied into addr (char addr[20]) without checking the length. See
lines 106 of beacon.c:
...
105 else if (destcall != NULL)
106 strcpy(addr, destcall);
...
Checking the length of destcall before copying should solve the problem:
if (strlen(destcall) > 20) {
fprintf(stderr, "beacon: destination (-d) exceeds allowed
length\n");
return 1;
} else
strcpy(addr, destcall);
I'd also propose to increase the length of addr a little since 20
characters seems a little few for longer pathes.
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