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Bug #68791 Insecure temp file creation
Submitted: 2015-01-10 17:17 UTC Modified: 2020-03-04 11:11 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:0 of 0 (0.0%)
From: bugreports at internot dot info Assigned: remi (profile)
Status: Closed Package: Zip Related
PHP Version: master-Git-2015-01-10 (Git) OS: Linux Ubuntu 14.04
Private report: No CVE-ID: None
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 [2015-01-10 17:17 UTC] bugreports at internot dot info 
Description:
------------
Hi,

In /ext/zip/lib/zip_close.c:

613    if ((tfd=mkstemp(temp)) == -1) {

mkstemp is called, but the umask is not securely set first.

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 [2016-09-05 18:44 UTC] cmb@php.net
-Status: Open +Status: Analyzed
 [2016-09-05 18:44 UTC] cmb@php.net 
Actually, this is a libzip issue that has been fixed as of libzip
1.0 (at least)[1], and PHP 7 already has at least libzip 1.0.1.

PHP 5.6, however, still ships with libzip 0.11.2, so the fix needs
to be backported. The respective mkstemp() call is in
zip_close.c[2].

[1] <http://hg.nih.at/libzip/rev/d3ac0a768127>
[2] <https://github.com/php/php-src/blob/PHP-5.6.26/ext/zip/lib/zip_close.c#L613>
 [2020-03-04 11:11 UTC] remi@php.net
-Status: Analyzed +Status: Closed -Assigned To: +Assigned To: remi
 [2020-03-04 11:11 UTC] remi@php.net 
Closing as 5.x is now EOL, PHP 7.2/7.3 have libzip 1.1.2, and since 7.4, libzip is no more bundled.
 
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