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FIX pam_ssh_agent_auth auth for RSA keys

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Related: rhbz#2070113
This commit is contained in:
Dmitry Belyavskiy 2022-07-15 16:52:19 +02:00
parent 9697eecfeb
commit 9591af3b1d
2 changed files with 28 additions and 2 deletions
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11
openssh.spec
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@ -51,9 +51,9 @@
# Do not forget to bump pam_ssh_agent_auth release if you rewind the main package release to 1
%global openssh_ver 8.7p1
%global openssh_rel 18
%global openssh_rel 19
%global pam_ssh_agent_ver 0.10.4
%global pam_ssh_agent_rel 4
%global pam_ssh_agent_rel 5
Summary: An open source implementation of SSH protocol version 2
Name: openssh
@ -102,6 +102,8 @@ Patch306: pam_ssh_agent_auth-0.10.2-compat.patch
# Fix NULL dereference from getpwuid() return value
# https://sourceforge.net/p/pamsshagentauth/bugs/22/
Patch307: pam_ssh_agent_auth-0.10.2-dereference.patch
# https://bugzilla.redhat.com/show_bug.cgi?id=2070113
Patch308: pam_ssh_agent_auth-0.10.4-rsasha2.patch
#https://bugzilla.mindrot.org/show_bug.cgi?id=1641 (WONTFIX)
Patch400: openssh-7.8p1-role-mls.patch
@ -377,6 +379,7 @@ pushd pam_ssh_agent_auth-pam_ssh_agent_auth-%{pam_ssh_agent_ver}
%patch306 -p2 -b .psaa-compat
%patch305 -p2 -b .psaa-agent
%patch307 -p2 -b .psaa-deref
%patch308 -p2 -b .rsasha2
# Remove duplicate headers and library files
rm -f $(cat %{SOURCE5})
popd
@ -725,6 +728,10 @@ test -f %{sysconfig_anaconda} && \
%endif
%changelog
* Fri Jul 15 2022 Dmitry Belyavskiy <dbelyavs@redhat.com> - 8.7p1-19 + 0.10.4-5
- FIX pam_ssh_agent_auth auth for RSA keys
Related: rhbz#2070113
* Thu Jul 14 2022 Zoltan Fridrich <zfridric@redhat.com> - 8.7p1-18
- Fix new coverity issues
Related: rhbz#2068423

19
pam_ssh_agent_auth-0.10.4-rsasha2.patch Normal file
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@ -0,0 +1,19 @@
diff -up openssh-8.7p1/pam_ssh_agent_auth-pam_ssh_agent_auth-0.10.4/userauth_pubkey_from_id.c.rsasha2 openssh-8.7p1/pam_ssh_agent_auth-pam_ssh_agent_auth-0.10.4/userauth_pubkey_from_id.c
--- openssh-8.7p1/pam_ssh_agent_auth-pam_ssh_agent_auth-0.10.4/userauth_pubkey_from_id.c.rsasha2 2022-07-15 15:08:12.865585410 +0200
+++ openssh-8.7p1/pam_ssh_agent_auth-pam_ssh_agent_auth-0.10.4/userauth_pubkey_from_id.c 2022-07-15 15:16:25.164282372 +0200
@@ -87,8 +87,13 @@ userauth_pubkey_from_id(const char *ruse
(r = sshbuf_put_string(b, pkblob, blen)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
- if (ssh_agent_sign(id->ac->fd, id->key, &sig, &slen, sshbuf_ptr(b), sshbuf_len(b), NULL, 0) != 0)
- goto user_auth_clean_exit;
+ if (sshkey_type_plain(id->key->type) == KEY_RSA
+ && ssh_agent_sign(id->ac->fd, id->key, &sig, &slen, sshbuf_ptr(b), sshbuf_len(b), "rsa-sha2-256", 0) == 0) {
+ /* Do nothing */
+ } else {
+ if (ssh_agent_sign(id->ac->fd, id->key, &sig, &slen, sshbuf_ptr(b), sshbuf_len(b), NULL, 0) != 0)
+ goto user_auth_clean_exit;
+ }
/* test for correct signature */
if (sshkey_verify(id->key, sig, slen, sshbuf_ptr(b), sshbuf_len(b), NULL, 0, NULL) == 0)