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drop-support-for-shorthand-URLs.patch
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191
drop-support-for-shorthand-URLs.patch
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From c419542d956a2607bbce5df64b9d378a8588d778 Mon Sep 17 00:00:00 2001
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From: Tim Rühsen <tim.ruehsen@gmx.de>
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Date: Sun, 27 Oct 2024 19:53:14 +0100
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Subject: Fix CVE-2024-10524 (drop support for shorthand URLs)
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* doc/wget.texi: Add documentation for removed support for shorthand URLs.
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* src/html-url.c (src/html-url.c): Call maybe_prepend_scheme.
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* src/main.c (main): Likewise.
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* src/retr.c (getproxy): Likewise.
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* src/url.c: Rename definition of rewrite_shorthand_url to maybe_prepend_scheme,
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add new function is_valid_port.
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* src/url.h: Rename declaration of rewrite_shorthand_url to maybe_prepend_scheme.
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Reported-by: Goni Golan <gonig@jfrog.com>
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---
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doc/wget.texi | 12 ++++--------
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src/html-url.c | 2 +-
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src/main.c | 2 +-
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src/retr.c | 2 +-
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src/url.c | 57 ++++++++++++++++++---------------------------------------
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src/url.h | 2 +-
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6 files changed, 26 insertions(+), 51 deletions(-)
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diff --git a/doc/wget.texi b/doc/wget.texi
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index 1d026d72..d46da375 100644
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--- a/doc/wget.texi
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+++ b/doc/wget.texi
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@@ -314,8 +314,8 @@ for text files. Here is an example:
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ftp://host/directory/file;type=a
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@end example
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-Two alternative variants of @sc{url} specification are also supported,
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-because of historical (hysterical?) reasons and their widespreaded use.
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+The two alternative variants of @sc{url} specifications are no longer
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+supported because of security considerations:
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@sc{ftp}-only syntax (supported by @code{NcFTP}):
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@example
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@@ -327,12 +327,8 @@ host:/dir/file
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host[:port]/dir/file
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@end example
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-These two alternative forms are deprecated, and may cease being
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-supported in the future.
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-
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-If you do not understand the difference between these notations, or do
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-not know which one to use, just use the plain ordinary format you use
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-with your favorite browser, like @code{Lynx} or @code{Netscape}.
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+These two alternative forms have been deprecated long time ago,
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+and support is removed with version 1.22.0.
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@c man begin OPTIONS
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diff --git a/src/html-url.c b/src/html-url.c
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index 8e960092..99914943 100644
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--- a/src/html-url.c
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+++ b/src/html-url.c
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@@ -932,7 +932,7 @@ get_urls_file (const char *file, bool *read_again)
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url_text = merged;
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}
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- new_url = rewrite_shorthand_url (url_text);
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+ new_url = maybe_prepend_scheme (url_text);
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if (new_url)
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{
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xfree (url_text);
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diff --git a/src/main.c b/src/main.c
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index 77b1a0b6..6858d2da 100644
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--- a/src/main.c
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+++ b/src/main.c
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@@ -2126,7 +2126,7 @@ only if outputting to a regular file.\n"));
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struct iri *iri = iri_new ();
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struct url *url_parsed;
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- t = rewrite_shorthand_url (argv[optind]);
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+ t = maybe_prepend_scheme (argv[optind]);
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if (!t)
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t = argv[optind];
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diff --git a/src/retr.c b/src/retr.c
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index 5422963c..26eb9f17 100644
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--- a/src/retr.c
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+++ b/src/retr.c
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@@ -1546,7 +1546,7 @@ getproxy (struct url *u)
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/* Handle shorthands. `rewritten_storage' is a kludge to allow
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getproxy() to return static storage. */
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- rewritten_url = rewrite_shorthand_url (proxy);
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+ rewritten_url = maybe_prepend_scheme (proxy);
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if (rewritten_url)
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return rewritten_url;
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diff --git a/src/url.c b/src/url.c
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index 07c3bc87..2f27c48a 100644
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--- a/src/url.c
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+++ b/src/url.c
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@@ -594,60 +594,39 @@ parse_credentials (const char *beg, const char *end, char **user, char **passwd)
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return true;
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}
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-/* Used by main.c: detect URLs written using the "shorthand" URL forms
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- originally popularized by Netscape and NcFTP. HTTP shorthands look
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- like this:
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-
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- www.foo.com[:port]/dir/file -> http://www.foo.com[:port]/dir/file
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- www.foo.com[:port] -> http://www.foo.com[:port]
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-
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- FTP shorthands look like this:
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-
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- foo.bar.com:dir/file -> ftp://foo.bar.com/dir/file
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- foo.bar.com:/absdir/file -> ftp://foo.bar.com//absdir/file
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+static bool is_valid_port(const char *p)
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+{
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+ unsigned port = (unsigned) atoi (p);
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+ if (port == 0 || port > 65535)
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+ return false;
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- If the URL needs not or cannot be rewritten, return NULL. */
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+ int digits = strspn (p, "0123456789");
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+ return digits && (p[digits] == '/' || p[digits] == '\0');
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+}
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+/* Prepend "http://" to url if scheme is missing, otherwise return NULL. */
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char *
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-rewrite_shorthand_url (const char *url)
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+maybe_prepend_scheme (const char *url)
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{
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- const char *p;
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- char *ret;
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-
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if (url_scheme (url) != SCHEME_INVALID)
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return NULL;
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- /* Look for a ':' or '/'. The former signifies NcFTP syntax, the
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- latter Netscape. */
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- p = strpbrk (url, ":/");
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+ const char *p = strchr (url, ':');
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if (p == url)
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return NULL;
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/* If we're looking at "://", it means the URL uses a scheme we
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don't support, which may include "https" when compiled without
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- SSL support. Don't bogusly rewrite such URLs. */
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+ SSL support. Don't bogusly prepend "http://" to such URLs. */
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if (p && p[0] == ':' && p[1] == '/' && p[2] == '/')
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return NULL;
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- if (p && *p == ':')
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- {
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- /* Colon indicates ftp, as in foo.bar.com:path. Check for
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- special case of http port number ("localhost:10000"). */
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- int digits = strspn (p + 1, "0123456789");
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- if (digits && (p[1 + digits] == '/' || p[1 + digits] == '\0'))
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- goto http;
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-
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- /* Turn "foo.bar.com:path" to "ftp://foo.bar.com/path". */
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- if ((ret = aprintf ("ftp://%s", url)) != NULL)
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- ret[6 + (p - url)] = '/';
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- }
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- else
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- {
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- http:
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- /* Just prepend "http://" to URL. */
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- ret = aprintf ("http://%s", url);
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- }
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- return ret;
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+ if (p && p[0] == ':' && !is_valid_port (p + 1))
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+ return NULL;
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+
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+
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+ fprintf(stderr, "Prepended http:// to '%s'\n", url);
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+ return aprintf ("http://%s", url);
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}
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static void split_path (const char *, char **, char **);
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diff --git a/src/url.h b/src/url.h
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index 2dfbf30b..7796a21c 100644
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--- a/src/url.h
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+++ b/src/url.h
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@@ -128,7 +128,7 @@ char *uri_merge (const char *, const char *);
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int mkalldirs (const char *);
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-char *rewrite_shorthand_url (const char *);
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+char *maybe_prepend_scheme (const char *);
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bool schemes_are_similar_p (enum url_scheme a, enum url_scheme b);
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bool are_urls_equal (const char *u1, const char *u2);
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--
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cgit v1.2.3-70-g09d2
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@ -1,3 +1,10 @@
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-------------------------------------------------------------------
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Wed Nov 27 08:16:19 UTC 2024 - Valentin Lefebvre <valentin.lefebvre@suse.com>
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- Drop support for shorthand URLs
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* Breaking change to fix CVE-2024-10524.
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[+ drop-support-for-shorthand-URLs.patch, bsc#1233773]
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-------------------------------------------------------------------
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Tue Jun 18 07:54:22 UTC 2024 - Valentin Lefebvre <valentin.lefebvre@suse.com>
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@ -36,6 +36,8 @@ Patch8: wget-errno-clobber.patch
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Patch9: remove-env-from-shebang.patch
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Patch10: wget-do-not-propagate-credentials.patch
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Patch11: properly-re-implement-userinfo-parsing.patch
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# PATCH-FIX-UPSTREAM - CVE-2024-10524
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Patch12: drop-support-for-shorthand-URLs.patch
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BuildRequires: gpgme-devel >= 0.4.2
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BuildRequires: libcares-devel
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BuildRequires: libidn2-devel
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