1 files changed, 61 insertions, 0 deletions
diff --git a/backport-Neutralize-zip-file-traversal-attacks-in-miniunz.patch b/backport-Neutralize-zip-file-traversal-attacks-in-miniunz.patch
new file mode 100644
index 0000000..18589f5
--- /dev/null
+++ b/backport-Neutralize-zip-file-traversal-attacks-in-miniunz.patch
@@ -0,0 +1,61 @@
+From 14a5f8f266c16c87ab6c086fc52b770b27701e01 Mon Sep 17 00:00:00 2001
+From: Matt Wilson <msw@amazon.com>
+Date: Wed, 17 Jan 2024 14:46:18 -0800
+Subject: [PATCH] Neutralize zip file traversal attacks in miniunz.
+
+Archive formats such as .zip files are generally susceptible to
+so-called "traversal attacks". This allows an attacker to craft
+an archive that writes to unexpected locations of the file system
+(e.g., /etc/shadow) if an unspecting root user were to unpack a
+malicious archive.
+
+This patch neutralizes absolute paths such as /tmp/moo and deeply
+relative paths such as dummy/../../../../../../../../../../tmp/moo
+
+The Debian project requested CVE-2014-9485 be allocated for the
+first identified weakness. The fix was incomplete, resulting in a
+revised patch applied here. Since there wasn't an updated version
+released by Debian with the incomplete fix, I suggest we use this
+CVE to identify both issues.
+
+Link: https://security.snyk.io/research/zip-slip-vulnerability
+Link: https://bugs.debian.org/774321
+Link: https://bugs.debian.org/776831
+Link: https://nvd.nist.gov/vuln/detail/CVE-2014-9485
+Reported-by: Jakub Wilk <jwilk@debian.org>
+Fixed-by: Michael Gilbert <mgilbert@debian.org>
+
+Reference: https://github.com/madler/zlib/commit/14a5f8f266c16c87ab6c086fc52b770b27701e01
+Conflict: no
+---
+ contrib/minizip/miniunz.c | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+diff --git a/contrib/minizip/miniunz.c b/contrib/minizip/miniunz.c
+index 0c2fb0d..d627c42 100644
+--- a/contrib/minizip/miniunz.c
++++ b/contrib/minizip/miniunz.c
+@@ -356,6 +356,20 @@ static int do_extract_currentfile(unzFile uf, const int* popt_extract_without_pa
+         else
+             write_filename = filename_withoutpath;
+ 
++        if (write_filename[0]!='\0')
++        {
++            const char* relative_check = write_filename;
++            while (relative_check[1]!='\0')
++            {
++                if (relative_check[0]=='.' && relative_check[1]=='.')
++                    write_filename = relative_check;
++                relative_check++;
++            }
++        }
++
++        while (write_filename[0]=='/' || write_filename[0]=='.')
++            write_filename++;
++
+         err = unzOpenCurrentFilePassword(uf,password);
+         if (err!=UNZ_OK)
+         {
+-- 
+2.33.0
+