parent
6db28c873c
commit
7b1f846fb4
@ -0,0 +1,105 @@
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From 01a4035c869b91c153af9a9132c87adb7669ea1c Mon Sep 17 00:00:00 2001
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From: lu4nx <lx@shellcodes.org>
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Date: Tue, 6 Dec 2022 15:42:40 +0800
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Subject: [PATCH] Fix etags local command injection vulnerability
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* lib-src/etags.c: (escape_shell_arg_string): New function.
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(process_file_name): Use it to quote file names passed to the
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shell. (Bug#59817)
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---
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lib-src/etags.c | 63 +++++++++++++++++++++++++++++++++++++++++++++----
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1 file changed, 58 insertions(+), 5 deletions(-)
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diff --git a/lib-src/etags.c b/lib-src/etags.c
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index d1d20858cdd..ba0092cc637 100644
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--- a/lib-src/etags.c
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+++ b/lib-src/etags.c
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@@ -399,6 +399,7 @@ static void put_entries (node *);
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static void clean_matched_file_tag (char const * const, char const * const);
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static void do_move_file (const char *, const char *);
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+static char *escape_shell_arg_string (char *);
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static char *concat (const char *, const char *, const char *);
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static char *skip_spaces (char *);
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static char *skip_non_spaces (char *);
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@@ -1670,13 +1671,16 @@ process_file_name (char *file, language *lang)
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else
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{
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#if MSDOS || defined (DOS_NT)
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- char *cmd1 = concat (compr->command, " \"", real_name);
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- char *cmd = concat (cmd1, "\" > ", tmp_name);
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+ int buf_len = strlen (compr->command) + strlen (" \"\" > \"\"") + strlen (real_name) + strlen (tmp_name) + 1;
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+ char *cmd = xmalloc (buf_len);
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+ snprintf (cmd, buf_len, "%s \"%s\" > \"%s\"", compr->command, real_name, tmp_name);
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#else
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- char *cmd1 = concat (compr->command, " '", real_name);
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- char *cmd = concat (cmd1, "' > ", tmp_name);
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+ char *new_real_name = escape_shell_arg_string (real_name);
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+ char *new_tmp_name = escape_shell_arg_string (tmp_name);
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+ int buf_len = strlen (compr->command) + strlen (" > ") + strlen (new_real_name) + strlen (new_tmp_name) + 1;
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+ char *cmd = xmalloc (buf_len);
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+ snprintf (cmd, buf_len, "%s %s > %s", compr->command, new_real_name, new_tmp_name);
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#endif
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- free (cmd1);
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int tmp_errno;
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if (system (cmd) == -1)
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{
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@@ -7124,6 +7128,55 @@ etags_mktmp (void)
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return templt;
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}
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+/*
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+ * Adds single quotes around a string, if found single quotes, escaped it.
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+ * Return a newly-allocated string.
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+ *
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+ * For example:
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+ * escape_shell_arg_string("test.txt") => 'test.txt'
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+ * escape_shell_arg_string("'test.txt") => ''\''test.txt'
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+ */
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+static char *
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+escape_shell_arg_string (char *str)
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+{
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+ char *p = str;
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+ int need_space = 2; /* ' at begin and end */
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+
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+ while (*p != '\0')
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+ {
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+ if (*p == '\'')
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+ need_space += 4; /* ' to '\'', length is 4 */
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+ else
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+ need_space++;
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+
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+ p++;
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+ }
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+
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+ char *new_str = xnew (need_space + 1, char);
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+ new_str[0] = '\'';
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+ new_str[need_space-1] = '\'';
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+
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+ int i = 1; /* skip first byte */
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+ p = str;
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+ while (*p != '\0')
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+ {
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+ new_str[i] = *p;
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+ if (*p == '\'')
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+ {
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+ new_str[i+1] = '\\';
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+ new_str[i+2] = '\'';
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+ new_str[i+3] = '\'';
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+ i += 3;
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+ }
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+
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+ i++;
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+ p++;
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+ }
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+
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+ new_str[need_space] = '\0';
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+ return new_str;
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+}
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+
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static void
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do_move_file(const char *src_file, const char *dst_file)
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{
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--
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2.36.1
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@ -0,0 +1,26 @@
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From 1b4dc4691c1f87fc970fbe568b43869a15ad0d4c Mon Sep 17 00:00:00 2001
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From: Xi Lu <lx@shellcodes.org>
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Date: Sat, 24 Dec 2022 16:28:54 +0800
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Subject: [PATCH] Fix htmlfontify.el command injection vulnerability.
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* lisp/htmlfontify.el (hfy-text-p): Fix command injection
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vulnerability. (Bug#60295)
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---
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lisp/htmlfontify.el | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/lisp/htmlfontify.el b/lisp/htmlfontify.el
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index df4c6ab079c..389b92939cc 100644
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--- a/lisp/htmlfontify.el
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+++ b/lisp/htmlfontify.el
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@@ -1912,7 +1912,7 @@ hfy-make-directory
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(defun hfy-text-p (srcdir file)
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"Is SRCDIR/FILE text? Uses `hfy-istext-command' to determine this."
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- (let* ((cmd (format hfy-istext-command (expand-file-name file srcdir)))
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+ (let* ((cmd (format hfy-istext-command (shell-quote-argument (expand-file-name file srcdir))))
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(rsp (shell-command-to-string cmd)))
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(string-match "text" rsp)))
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--
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2.36.1
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@ -0,0 +1,43 @@
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From a8006ea580ed74f27f974d60b598143b04ad1741 Mon Sep 17 00:00:00 2001
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From: Xi Lu <lx@shellcodes.org>
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Date: Sat, 11 Mar 2023 18:53:37 +0800
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Subject: * lisp/org/ob-latex.el: Fix command injection vulnerability
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(org-babel-execute:latex):
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Replaced the `(shell-command "mv BAR NEWBAR")' with `rename-file'.
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TINYCHANGE
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---
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lisp/org/ob-latex.el | 13 +++++--------
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1 file changed, 5 insertions(+), 8 deletions(-)
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diff --git a/lisp/org/ob-latex.el b/lisp/org/ob-latex.el
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index a2c24b3..ce39628 100644
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--- a/lisp/org/ob-latex.el
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+++ b/lisp/org/ob-latex.el
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@@ -218,17 +218,14 @@ This function is called by `org-babel-execute-src-block'."
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(if (string-suffix-p ".svg" out-file)
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(progn
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(shell-command "pwd")
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- (shell-command (format "mv %s %s"
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- (concat (file-name-sans-extension tex-file) "-1.svg")
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- out-file)))
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+ (rename-file (concat (file-name-sans-extension tex-file) "-1.svg")
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+ out-file t))
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(error "SVG file produced but HTML file requested")))
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((file-exists-p (concat (file-name-sans-extension tex-file) ".html"))
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(if (string-suffix-p ".html" out-file)
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- (shell-command "mv %s %s"
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- (concat (file-name-sans-extension tex-file)
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- ".html")
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- out-file)
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- (error "HTML file produced but SVG file requested")))))
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+ (rename-file (concat (file-name-sans-extension tex-file) ".html")
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+ out-file t)
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+ (error "HTML file produced but SVG file requested")))))
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((or (string= "pdf" extension) imagemagick)
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(with-temp-file tex-file
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(require 'ox-latex)
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--
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cgit v1.1
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@ -0,0 +1,28 @@
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From 9a3b08061feea14d6f37685ca1ab8801758bfd1c Mon Sep 17 00:00:00 2001
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From: Xi Lu <lx@shellcodes.org>
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Date: Fri, 23 Dec 2022 12:52:48 +0800
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Subject: [PATCH] Fix ruby-mode.el local command injection vulnerability
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(bug#60268)
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* lisp/progmodes/ruby-mode.el
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(ruby-find-library-file): Fix local command injection vulnerability.
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---
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lisp/progmodes/ruby-mode.el | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
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index 1f3e9b6ae7b..a4aa61905e4 100644
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--- a/lisp/progmodes/ruby-mode.el
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+++ b/lisp/progmodes/ruby-mode.el
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@@ -1820,7 +1820,7 @@ ruby-find-library-file
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(setq feature-name (read-string "Feature name: " init))))
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(let ((out
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(substring
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- (shell-command-to-string (concat "gem which " feature-name))
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+ (shell-command-to-string (concat "gem which " (shell-quote-argument feature-name)))
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0 -1)))
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(if (string-match-p "\\`ERROR" out)
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(user-error "%s" out)
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--
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2.36.1
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Loading…
Reference in new issue