Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Thu, 12 Jul 2018 19:55:56 +0530
From: "m0rtal f!w" <>
Subject: overflow() at stdlib.h


File: stdlib.h#L:113

char *realpath (const char *__restrict, char *__restrict);

According to the documentation of realpath() the output buffer needs to be
at least of size PATH_MAX specifying output buffers large enough to handle
the maximum-size possible result from path manipulation functions. (In that
instance, buf's size comes from uv__fs_pathmax_size(). That function
attempts to use pathconf(path, _PC_PATH_MAX) as noted in the realpath(3)

But over here uv__fs_pathmax_size() nor pathconf(path, _PC_PATH_MAX) is

Passing an inadequately-sized output buffer to a path manipulation function
can result in a buffer overflow. Such functions include realpath()
readlink() PathAppend() and others.

Request team to have a look and validate.

Thank you

Content of type "text/html" skipped

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.