diff options
author | V3n3RiX <venerix@redcorelinux.org> | 2017-10-29 11:22:34 +0000 |
---|---|---|
committer | V3n3RiX <venerix@redcorelinux.org> | 2017-10-29 11:22:34 +0000 |
commit | bd7908c6630f38067350d396ac5d18c3cc2434a0 (patch) | |
tree | 3559b3e11424f5529527f2474d8a977a91ee3389 /app-emulation/libvirt/files | |
parent | 8b2628ad8526c806375e7b157889e4274b70248b (diff) |
gentoo resync : 29.10.2017
Diffstat (limited to 'app-emulation/libvirt/files')
-rw-r--r-- | app-emulation/libvirt/files/libvirt-3.8.0-CVE-2017-1000256.patch | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/app-emulation/libvirt/files/libvirt-3.8.0-CVE-2017-1000256.patch b/app-emulation/libvirt/files/libvirt-3.8.0-CVE-2017-1000256.patch new file mode 100644 index 000000000000..8c347cd799ad --- /dev/null +++ b/app-emulation/libvirt/files/libvirt-3.8.0-CVE-2017-1000256.patch @@ -0,0 +1,74 @@ +From 441d3eb6d1be940a67ce45a286602a967601b157 Mon Sep 17 00:00:00 2001 +From: "Daniel P. Berrange" <berrange@redhat.com> +Date: Thu, 5 Oct 2017 17:54:28 +0100 +Subject: [PATCH] qemu: ensure TLS clients always verify the server certificate + +The default_tls_x509_verify (and related) parameters in qemu.conf +control whether the QEMU TLS servers request & verify certificates +from clients. This works as a simple access control system for +servers by requiring the CA to issue certs to permitted clients. +This use of client certificates is disabled by default, since it +requires extra work to issue client certificates. + +Unfortunately the code was using this configuration parameter when +setting up both TLS clients and servers in QEMU. The result was that +TLS clients for character devices and disk devices had verification +turned off, meaning they would ignore errors while validating the +server certificate. + +This allows for trivial MITM attacks between client and server, +as any certificate returned by the attacker will be accepted by +the client. + +This is assigned CVE-2017-1000256 / LSN-2017-0002 + +Reviewed-by: Eric Blake <eblake@redhat.com> +Signed-off-by: Daniel P. Berrange <berrange@redhat.com> +--- + src/qemu/qemu_command.c | 2 +- + tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.args | 2 +- + .../qemuxml2argv-serial-tcp-tlsx509-secret-chardev.args | 2 +- + 3 files changed, 3 insertions(+), 3 deletions(-) + +diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c +index 46f0bdd18..f68b82d08 100644 +--- a/src/qemu/qemu_command.c ++++ b/src/qemu/qemu_command.c +@@ -721,7 +721,7 @@ qemuBuildTLSx509BackendProps(const char *tlspath, + if (virJSONValueObjectCreate(propsret, + "s:dir", path, + "s:endpoint", (isListen ? "server": "client"), +- "b:verify-peer", verifypeer, ++ "b:verify-peer", (isListen ? verifypeer : true), + NULL) < 0) + goto cleanup; + +diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.args b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.args +index 5aff7734e..ab5f7e27f 100644 +--- a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.args ++++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.args +@@ -26,7 +26,7 @@ server,nowait \ + localport=1111 \ + -device isa-serial,chardev=charserial0,id=serial0 \ + -object tls-creds-x509,id=objcharserial1_tls0,dir=/etc/pki/libvirt-chardev,\ +-endpoint=client,verify-peer=no \ ++endpoint=client,verify-peer=yes \ + -chardev socket,id=charserial1,host=127.0.0.1,port=5555,\ + tls-creds=objcharserial1_tls0 \ + -device isa-serial,chardev=charserial1,id=serial1 \ +diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-secret-chardev.args b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-secret-chardev.args +index 91f1fe0cd..2567abbfa 100644 +--- a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-secret-chardev.args ++++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-secret-chardev.args +@@ -31,7 +31,7 @@ localport=1111 \ + data=9eao5F8qtkGt+seB1HYivWIxbtwUu6MQtg1zpj/oDtUsPr1q8wBYM91uEHCn6j/1,\ + keyid=masterKey0,iv=AAECAwQFBgcICQoLDA0ODw==,format=base64 \ + -object tls-creds-x509,id=objcharserial1_tls0,dir=/etc/pki/libvirt-chardev,\ +-endpoint=client,verify-peer=no,passwordid=charserial1-secret0 \ ++endpoint=client,verify-peer=yes,passwordid=charserial1-secret0 \ + -chardev socket,id=charserial1,host=127.0.0.1,port=5555,\ + tls-creds=objcharserial1_tls0 \ + -device isa-serial,chardev=charserial1,id=serial1 \ +-- +2.13.6 + |