diff options
Diffstat (limited to 'source/a/pam/fedora-patches/pam-1.3.1-unix-bcrypt_b.patch')
| -rw-r--r-- | source/a/pam/fedora-patches/pam-1.3.1-unix-bcrypt_b.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/source/a/pam/fedora-patches/pam-1.3.1-unix-bcrypt_b.patch b/source/a/pam/fedora-patches/pam-1.3.1-unix-bcrypt_b.patch new file mode 100644 index 00000000..bff9d47e --- /dev/null +++ b/source/a/pam/fedora-patches/pam-1.3.1-unix-bcrypt_b.patch @@ -0,0 +1,34 @@ +From f7abb8c1ef3aa31e6c2564a8aaf69683a77c2016 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Bj=C3=B6rn=20Esser?= <besser82@fedoraproject.org> +Date: Thu, 15 Nov 2018 15:01:57 +0100 +Subject: [PATCH] pam_unix: Use bcrypt b-variant for computing new hashes. + +Bcrypt hashes used the "$2a$" prefix since 1997. +However, in 2011 an implementation bug was discovered in bcrypt +affecting the handling of characters in passphrases with the 8th +bit set. + +Besides fixing the bug, OpenBSD 5.5 introduced the "$2b$" prefix +for a behavior that exactly matches crypt_blowfish's "$2y$", and +the crypt_blowfish implementation supports it as well since v1.1. + +That said new computed bcrypt hashes should use the "$2b$" prefix. + +* modules/pam_unix/passverify.c: Use bcrypt b-variant. +--- + modules/pam_unix/passverify.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/modules/pam_unix/passverify.c b/modules/pam_unix/passverify.c +index 9c1771e2..1f433b3a 100644 +--- a/modules/pam_unix/passverify.c ++++ b/modules/pam_unix/passverify.c +@@ -385,7 +385,7 @@ PAMH_ARG_DECL(char * create_password_hash, + /* algoid = "$1" */ + return crypt_md5_wrapper(password); + } else if (on(UNIX_BLOWFISH_PASS, ctrl)) { +- algoid = "$2a$"; ++ algoid = "$2b$"; + } else if (on(UNIX_SHA256_PASS, ctrl)) { + algoid = "$5$"; + } else if (on(UNIX_SHA512_PASS, ctrl)) { |