gnupg: CVE-2022-34903 possible signature forgery via injection into the status line

Source: https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git
MR: 119424
Type: Security Fix
Disposition: Backport from https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=34c649b3601383cd11dbc76221747ec16fd68e1b
ChangeID: 97de66d6aa74e12cb1bf82fe85ee62e2530fccf6
Description:
	CVE-2022-34903 gnupg: possible signature forgery via injection into the status line.

(From OE-Core rev: 2bf155d59e33972bbb1780e34753199b5a9192a0)

Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 45 insertions, 0 deletions

diff --git a/meta/recipes-support/gnupg/gnupg/CVE-2022-34903.patch b/meta/recipes-support/gnupg/gnupg/CVE-2022-34903.patch
new file mode 100644
index 0000000000..5992949d35
--- /dev/null
+++ b/meta/recipes-support/gnupg/gnupg/CVE-2022-34903.patch
@@ -0,0 +1,44 @@
+From 2f05fc96b1332caf97176841b1152da3f0aa16a8 Mon Sep 17 00:00:00 2001
+From: Hitendra Prajapati <hprajapati@mvista.com>
+Date: Fri, 22 Jul 2022 17:52:36 +0530
+Subject: [PATCH] CVE-2022-34903
+
+Upstream-Status: Backport [https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gnupg.git;a=commit;h=34c649b3601383cd11dbc76221747ec16fd68e1b]
+CVE: CVE-2022-34903
+Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
+---
+ g10/cpr.c | 13 ++++---------
+ 1 file changed, 4 insertions(+), 9 deletions(-)
+
+diff --git a/g10/cpr.c b/g10/cpr.c
+index d502e8b..bc4b715 100644
+--- a/g10/cpr.c
++++ b/g10/cpr.c
+@@ -328,20 +328,15 @@ write_status_text_and_buffer (int no, const char *string,
+             }
+           first = 0;
+         }
+-      for (esc=0, s=buffer, n=len; n && !esc; s++, n--)
++      for (esc=0, s=buffer, n=len; n; s++, n--)
+         {
+           if (*s == '%' || *(const byte*)s <= lower_limit
+               || *(const byte*)s == 127 )
+             esc = 1;
+           if (wrap && ++count > wrap)
+-            {
+-              dowrap=1;
+-              break;
+-            }
+-        }
+-      if (esc)
+-        {
+-          s--; n++;
++            dowrap=1;
++          if (esc || dowrap)
++            break;
+         }
+       if (s != buffer)
+         es_fwrite (buffer, s-buffer, 1, statusfp);
+-- 
+2.25.1
+
diff --git a/meta/recipes-support/gnupg/gnupg_2.2.27.bb b/meta/recipes-support/gnupg/gnupg_2.2.27.bb
index 18bb855769..bd09b02017 100644
--- a/meta/recipes-support/gnupg/gnupg_2.2.27.bb
+++ b/meta/recipes-support/gnupg/gnupg_2.2.27.bb
@@ -20,6 +20,7 @@ SRC_URI = "${GNUPG_MIRROR}/${BPN}/${BPN}-${PV}.tar.bz2 \
            file://0003-dirmngr-uses-libgpg-error.patch \
            file://0004-autogen.sh-fix-find-version-for-beta-checking.patch \
            file://0001-Woverride-init-is-not-needed-with-gcc-9.patch \
+           file://CVE-2022-34903.patch \
            "
 SRC_URI_append_class-native = " file://0001-configure.ac-use-a-custom-value-for-the-location-of-.patch \
                                 file://relocate.patch"