File CVE-2023-25815.patch of Package git.28757
commit c4137be0f5a6edf9a9044e6e43ecf4468c7a4046
Author: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Date: Wed Feb 22 12:40:55 2023 +0100
gettext: avoid using gettext if the locale dir is not present
In cc5e1bf99247 (gettext: avoid initialization if the locale dir is not
present, 2018-04-21) Git was taught to avoid a costly gettext start-up
when there are not even any localized messages to work with.
But we still called `gettext()` and `ngettext()` functions.
Which caused a problem in Git for Windows when the libgettext that is
consumed from the MSYS2 project stopped using a runtime prefix in
https://github.com/msys2/MINGW-packages/pull/10461
Due to that change, we now use an unintialized gettext machinery that
might get auto-initialized _using an unintended locale directory_:
`C:\mingw64\share\locale`.
Let's record the fact when the gettext initialization was skipped, and
skip calling the gettext functions accordingly.
This addresses CVE-2023-25815.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
diff --git a/gettext.c b/gettext.c
index 1b564216d0..610d402fe7 100644
--- a/gettext.c
+++ b/gettext.c
@@ -109,6 +109,8 @@ static void init_gettext_charset(const char *domain)
setlocale(LC_CTYPE, "C");
}
+int git_gettext_enabled = 0;
+
void git_setup_gettext(void)
{
const char *podir = getenv(GIT_TEXT_DOMAIN_DIR_ENVIRONMENT);
@@ -130,6 +132,8 @@ void git_setup_gettext(void)
init_gettext_charset("git");
textdomain("git");
+ git_gettext_enabled = 1;
+
free(p);
}
diff --git a/gettext.h b/gettext.h
index bee52eb113..b96ab9d340 100644
--- a/gettext.h
+++ b/gettext.h
@@ -31,9 +31,11 @@
int use_gettext_poison(void);
#ifndef NO_GETTEXT
+extern int git_gettext_enabled;
void git_setup_gettext(void);
int gettext_width(const char *s);
#else
+#define git_gettext_enabled (0)
static inline void git_setup_gettext(void)
{
use_gettext_poison(); /* getenv() reentrancy paranoia */
@@ -48,7 +50,8 @@ static inline FORMAT_PRESERVING(1) const char *_(const char *msgid)
{
if (!*msgid)
return "";
- return use_gettext_poison() ? "# GETTEXT POISON #" : gettext(msgid);
+ return use_gettext_poison() ? "# GETTEXT POISON #" :
+ !git_gettext_enabled ? msgid : gettext(msgid);
}
static inline FORMAT_PRESERVING(1) FORMAT_PRESERVING(2)
@@ -56,6 +59,8 @@ const char *Q_(const char *msgid, const char *plu, unsigned long n)
{
if (use_gettext_poison())
return "# GETTEXT POISON #";
+ if (!git_gettext_enabled)
+ return n == 1 ? msgid : plu;
return ngettext(msgid, plu, n);
}