blob: e4046ec3fec3ca40d015c9ddbe9c48b9a85fdd69 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
Description: Allow only word characters in filename suffixes
CVE-2013-4407: Allow only word characters in filename suffixes. An
attacker able to upload files to a service that uses
HTTP::Body::Multipart could use this issue to upload a file and create
a specifically-crafted temporary filename on the server, that when
processed without further validation, could allow execution of commands
on the server.
Origin: vendor
Bug: https://rt.cpan.org/Ticket/Display.html?id=88342
Bug-Debian: http://bugs.debian.org/721634
Bug-RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1005669
Forwarded: no
Author: Salvatore Bonaccorso <carnil@debian.org>
Last-Update: 2013-10-21
Updated by Andreas K. Huettel <dilfridge@gentoo.org> for HTTP-Body-1.19
Updated by Andreas K. Huettel <dilfridge@gentoo.org> for HTTP-Body-1.23
This version has a fix for the CVE, but the stricter regexp has served
us well so far...
diff -ruN HTTP-Body-1.23.orig/lib/HTTP/Body/MultiPart.pm HTTP-Body-1.23/lib/HTTP/Body/MultiPart.pm
--- HTTP-Body-1.23.orig/lib/HTTP/Body/MultiPart.pm 2024-03-30 14:27:57.000000000 +1100
+++ HTTP-Body-1.23/lib/HTTP/Body/MultiPart.pm 2024-05-02 13:07:21.794271606 +1100
@@ -255,7 +255,7 @@
=cut
-our $basename_regexp = qr/[^.]+(\.[^\\\/]+)$/;
+our $basename_regexp = qr/(\.\w+(?:\.\w+)*)$/;
our $file_temp_suffix = '.upload';
our $file_temp_template;
our %file_temp_parameters;
|
