import zsh-5.5.1-9.el8

SOURCES/0005-zsh-5.5.1-CVE-2021-45444.patch

+From 9ce87af4ced4e21258e6003f1fb65b05ca5a7d14 Mon Sep 17 00:00:00 2001
+From: Oliver Kiddle <opk@zsh.org>
+Date: Wed, 15 Dec 2021 01:56:40 +0100
+Subject: [PATCH] security/41: Don't perform PROMPT_SUBST evaluation on %F/%K
+ arguments
+
+Mitigates CVE-2021-45444
+
+Upstream-commit: c187154f47697cdbf822c2f9d714d570ed4a0fd1
+Signed-off-by: Kamil Dudka <kdudka@redhat.com>
+---
+ Src/prompt.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/Src/prompt.c b/Src/prompt.c
+index 95da525..1368f8e 100644
+--- a/Src/prompt.c
++++ b/Src/prompt.c
+@@ -244,6 +244,12 @@ parsecolorchar(int arg, int is_fg)
+ 	bv->fm += 2; /* skip over F{ */
+ 	if ((ep = strchr(bv->fm, '}'))) {
+ 	    char oc = *ep, *col, *coll;
++	    int ops = opts[PROMPTSUBST], opb = opts[PROMPTBANG];
++	    int opp = opts[PROMPTPERCENT];
++
++	    opts[PROMPTPERCENT] = 1;
++	    opts[PROMPTSUBST] = opts[PROMPTBANG] = 0;
++
+ 	    *ep = '\0';
+ 	    /* expand the contents of the argument so you can use
+ 	     * %v for example */
+@@ -252,6 +258,10 @@ parsecolorchar(int arg, int is_fg)
+ 	    arg = match_colour((const char **)&coll, is_fg, 0);
+ 	    free(col);
+ 	    bv->fm = ep;
++
++	    opts[PROMPTSUBST] = ops;
++	    opts[PROMPTBANG] = opb;
++	    opts[PROMPTPERCENT] = opp;
+ 	} else {
+ 	    arg = match_colour((const char **)&bv->fm, is_fg, 0);
+ 	    if (*bv->fm != '}')
+-- 
+2.34.1
+

SPECS/zsh.spec

 Summary: Powerful interactive shell
 Name: zsh
 Version: 5.5.1
-Release: 6%{?dist}.2
+Release: 9%{?dist}
 License: MIT
 URL: http://zsh.sourceforge.net/
 Source0: https://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.xz
@@ -24,6 +24,9 @@ Patch3:  0003-zsh-5.5.1-parse-error-exit-status.patch
 # drop privileges securely when unsetting PRIVILEGED option (CVE-2019-20044)
 Patch4:  0004-zsh-5.5.1-CVE-2019-20044.patch
 
+# do not perform PROMPT_SUBST evaluation on %F/%K arguments (CVE-2021-45444)
+Patch5:  0005-zsh-5.5.1-CVE-2021-45444.patch
+
 BuildRequires: autoconf
 BuildRequires: coreutils
 BuildRequires: gawk
@@ -179,10 +182,13 @@ fi
 %doc Doc/*.html
 
 %changelog
-* Tue Mar 03 2020 Kamil Dudka <kdudka@redhat.com> - 5.5.1-6.el8_1.2
+* Tue Feb 22 2022 Kamil Dudka <kdudka@redhat.com> - 5.5.1-9
+- do not perform PROMPT_SUBST evaluation on %F/%K arguments (CVE-2021-45444)
+
+* Tue Mar 03 2020 Kamil Dudka <kdudka@redhat.com> - 5.5.1-8
 - improve printing of error messages introduced by the fix of CVE-2019-20044
 
-* Mon Feb 24 2020 Kamil Dudka <kdudka@redhat.com> - 5.5.1-6.el8_1.1
+* Mon Feb 24 2020 Kamil Dudka <kdudka@redhat.com> - 5.5.1-7
 - drop privileges securely when unsetting PRIVILEGED option (CVE-2019-20044)
 
 * Mon Dec 17 2018 Kamil Dudka <kdudka@redhat.com> - 5.5.1-6