1979200 – wget not working with recent crypto-policies and gnutls allowlisting config

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Bug 1979200 - wget not working with recent crypto-policies and gnutls allowlisting config

Summary: wget not working with recent crypto-policies and gnutls allowlisting config

Keywords:
Status:	CLOSED CURRENTRELEASE
Alias:	None
Product:	Red Hat Enterprise Linux 9
Classification:	Red Hat
Component:	crypto-policies
Sub Component:
Version:	CentOS Stream
Hardware:	Unspecified
OS:	Unspecified
Priority:	high
Severity:	unspecified
Target Milestone:	beta
Target Release:	---
Assignee:	Alexander Sosedkin
QA Contact:	Ondrej Moriš
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2021-07-05 08:46 UTC by Yatin Karel
Modified:	2021-12-07 21:53 UTC (History)
CC List:	7 users (show)
Fixed In Version:	crypto-policies-20210707-1.git29f6c0b.el9
Doc Type:	No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed:	2021-12-07 21:50:14 UTC
Type:	Bug
Target Upstream Version:
Embargoed:
Dependent Products:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Issue Tracker	CRYPTO-5566	0	None	None	None	2021-12-02 13:05:30 UTC

Description Yatin Karel 2021-07-05 08:46:54 UTC

Description of problem:

Noticed while testing RDO with latest CentOS9 stream test compose, wget fails as follows:-
# wget https://download.cirros-cloud.net/0.5.1/cirros-0.5.1-x86_64-disk.img -P /tmp/
Connecting to github.com (github.com)|140.82.112.3|:443... connected.\nGnuTLS: An illegal parameter has been received.\nUnable to establish SSL connection.

Downgrading crypto-policies to previous version crypto-policies-20210218-3.git2246c55.el9 works fine.

Version-Release number of selected component (if applicable):
- wget-1.21.1-5.el9.x86_64
- crypto-policies-20210628-1.gitdd7d273.el9.noarch
- gnutls-3.7.2-3.el9.x86_64

How reproducible:
Always with latest C9-strem compose

Steps to Reproduce:
With latest c9-stream compose, install wget
- wget https://download.cirros-cloud.net/0.5.1/cirros-0.5.1-x86_64-disk.img -P /tmp/
- wget https://google.com -P /tmp/

Actual results:
wget fails with:-
GnuTLS: An illegal parameter has been received.
Unable to establish SSL connection.

Expected results:
wget should succeed with default options

Additional info:

With export GNUTLS_DEBUG_LEVEL=3

gnutls[2]: Enabled GnuTLS 3.7.2 logging...
gnutls[2]: getrandom random generator was selected
gnutls[2]: Intel SSSE3 was detected
gnutls[2]: Intel AES accelerator was detected
gnutls[2]: Intel GCM accelerator (AVX) was detected
gnutls[2]: cfg: marking hash SHA256 as secure
gnutls[2]: cfg: marking hash SHA384 as secure
gnutls[2]: cfg: marking hash SHA512 as secure
gnutls[2]: cfg: marking hash SHA3-256 as secure
gnutls[2]: cfg: marking hash SHA3-384 as secure
gnutls[2]: cfg: marking hash SHA3-512 as secure
gnutls[2]: cfg: marking hash SHA224 as secure
gnutls[2]: cfg: marking hash SHA3-224 as secure
gnutls[2]: cfg: enabling MAC AEAD for TLS
gnutls[2]: cfg: enabling MAC SHA1 for TLS
gnutls[2]: cfg: enabling MAC SHA512 for TLS
gnutls[2]: cfg: enabling group X25519 for TLS
gnutls[2]: cfg: enabling group X448 for TLS
gnutls[2]: cfg: enabling group SECP256R1 for TLS
gnutls[2]: cfg: enabling group SECP384R1 for TLS
gnutls[2]: cfg: enabling group SECP521R1 for TLS
gnutls[2]: cfg: enabling group FFDHE2048 for TLS
gnutls[2]: cfg: enabling group FFDHE3072 for TLS
gnutls[2]: cfg: enabling group FFDHE4096 for TLS
gnutls[2]: cfg: enabling group FFDHE6144 for TLS
gnutls[2]: cfg: enabling group FFDHE8192 for TLS
gnutls[2]: cfg: marking signature ECDSA-SHA3-256 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA256 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA3-384 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA384 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA3-512 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA512 as secure
gnutls[2]: cfg: marking signature EdDSA-Ed25519 as secure
gnutls[2]: cfg: marking signature EdDSA-Ed448 as secure
gnutls[2]: cfg: marking signature RSA-PSS-SHA256 as secure
gnutls[2]: cfg: marking signature RSA-PSS-SHA384 as secure
gnutls[2]: cfg: marking signature RSA-PSS-SHA512 as secure
gnutls[2]: cfg: marking signature RSA-PSS-RSAE-SHA256 as secure
gnutls[2]: cfg: marking signature RSA-PSS-RSAE-SHA384 as secure
gnutls[2]: cfg: marking signature RSA-PSS-RSAE-SHA512 as secure
gnutls[2]: cfg: marking signature RSA-SHA3-256 as secure
gnutls[2]: cfg: marking signature RSA-SHA256 as secure
gnutls[2]: cfg: marking signature RSA-SHA3-384 as secure
gnutls[2]: cfg: marking signature RSA-SHA384 as secure
gnutls[2]: cfg: marking signature RSA-SHA3-512 as secure
gnutls[2]: cfg: marking signature RSA-SHA512 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA224 as secure
gnutls[2]: cfg: marking signature RSA-SHA224 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA3-224 as secure
gnutls[2]: cfg: marking signature RSA-SHA3-224 as secure
gnutls[2]: cfg: marking signature ECDSA-SHA3-256 as secure for certs
gnutls[2]: cfg: marking signature ECDSA-SHA256 as secure for certs
gnutls[2]: cfg: marking signature ECDSA-SHA3-384 as secure for certs
gnutls[2]: cfg: marking signature ECDSA-SHA384 as secure for certs
gnutls[2]: cfg: marking signature ECDSA-SHA3-512 as secure for certs
gnutls[2]: cfg: marking signature ECDSA-SHA512 as secure for certs
gnutls[2]: cfg: marking signature EdDSA-Ed25519 as secure for certs
gnutls[2]: cfg: marking signature EdDSA-Ed448 as secure for certs
gnutls[2]: cfg: marking signature RSA-PSS-SHA256 as secure for certs
gnutls[2]: cfg: marking signature RSA-PSS-SHA384 as secure for certs
gnutls[2]: cfg: marking signature RSA-PSS-SHA512 as secure for certs
gnutls[2]: cfg: marking signature RSA-PSS-RSAE-SHA256 as secure for certs
gnutls[2]: cfg: marking signature RSA-PSS-RSAE-SHA384 as secure for certs
gnutls[2]: cfg: marking signature RSA-PSS-RSAE-SHA512 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA3-256 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA256 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA3-384 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA384 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA3-512 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA512 as secure for certs
gnutls[2]: cfg: marking signature ECDSA-SHA224 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA224 as secure for certs
gnutls[2]: cfg: marking signature ECDSA-SHA3-224 as secure for certs
gnutls[2]: cfg: marking signature RSA-SHA3-224 as secure for certs
gnutls[2]: cfg: enabling curve X25519
gnutls[2]: cfg: enabling curve X448
gnutls[2]: cfg: enabling curve SECP256R1
gnutls[2]: cfg: enabling curve SECP384R1
gnutls[2]: cfg: enabling curve SECP521R1
gnutls[2]: cfg: enabling curve Ed25519
gnutls[2]: cfg: enabling curve Ed448
gnutls[2]: cfg: enabling cipher AES-256-GCM for TLS
gnutls[2]: cfg: enabling cipher AES-256-CCM for TLS
gnutls[2]: cfg: enabling cipher CHACHA20-POLY1305 for TLS
gnutls[2]: cfg: enabling cipher AES-256-CBC for TLS
gnutls[2]: cfg: enabling cipher AES-128-GCM for TLS
gnutls[2]: cfg: enabling cipher AES-128-CCM for TLS
gnutls[2]: cfg: enabling cipher AES-128-CBC for TLS
gnutls[2]: cfg: enabling key exchange ECDHE-RSA for TLS
gnutls[2]: cfg: enabling key exchange ECDHE-ECDSA for TLS
gnutls[2]: cfg: enabling key exchange RSA for TLS
gnutls[2]: cfg: enabling key exchange DHE-RSA for TLS
gnutls[2]: cfg: enabling version TLS1.3
gnutls[2]: cfg: enabling version TLS1.2
gnutls[2]: cfg: enabling version DTLS1.2
gnutls[2]: cfg: adding priority: SYSTEM -> NONE
gnutls[3]: ASSERT: sign.c[_gnutls_sign_is_secure2]:461
gnutls[2]: cfg: loaded system priority /etc/crypto-policies/back-ends/gnutls.config mtime 1625474425
--2021-07-05 08:40:27--  https://google.com/
gnutls[2]: Initializing needed PKCS #11 modules
gnutls[2]: p11: Initializing module: p11-kit-trust
gnutls[2]: p11: No login requested.
gnutls[3]: p11 attrs: CKA_CLASS (CERT), CKA_CERTIFICATE_TYPE
gnutls[3]: p11 attrs: CKA_TRUSTED
gnutls[3]: p11 attrs: CKA_CERTIFICATE_CATEGORY=CA
gnutls[2]: p11: No login requested.
gnutls[3]: p11 attrs: CKA_CLASS (CERT), CKA_CERTIFICATE_TYPE
gnutls[3]: p11 attrs: CKA_TRUSTED
gnutls[3]: p11 attrs: CKA_CERTIFICATE_CATEGORY=CA
gnutls[3]: ASSERT: pkcs11.c[find_multi_objs_cb]:3138
gnutls[3]: ASSERT: pkcs11.c[gnutls_pkcs11_obj_list_import_url3]:3467
Resolving google.com (google.com)... 172.217.12.238, 2607:f8b0:4004:806::200e
Connecting to google.com (google.com)|172.217.12.238|:443... connected.
gnutls[2]: cfg: system priority /etc/crypto-policies/back-ends/gnutls.config has not changed
gnutls[2]: resolved 'SYSTEM' to 'NONE:+ECDHE-RSA:+ECDHE-ECDSA:+RSA:+DHE-RSA:+GROUP-X25519:+GROUP-X448:+GROUP-SECP256R1:+GROUP-SECP384R1:+GROUP-SECP521R1:+GROUP-FFDHE2048:+GROUP-FFDHE3072:+GROUP-FFDHE4096:+GROUP-FFDHE6144:+GROUP-FFDHE8192:+AES-256-GCM:+AES-256-CCM:+CHACHA20-POLY1305:+AES-256-CBC:+AES-128-GCM:+AES-128-CCM:+AES-128-CBC:+AEAD:+SHA1:+SHA512:+SIGN-ECDSA-SHA256:+SIGN-ECDSA-SHA384:+SIGN-ECDSA-SHA512:+SIGN-EdDSA-Ed25519:+SIGN-RSA-PSS-SHA256:+SIGN-RSA-PSS-SHA384:+SIGN-RSA-PSS-SHA512:+SIGN-RSA-PSS-RSAE-SHA256:+SIGN-RSA-PSS-RSAE-SHA384:+SIGN-RSA-PSS-RSAE-SHA512:+SIGN-RSA-SHA256:+SIGN-RSA-SHA384:+SIGN-RSA-SHA512:+VERS-TLS1.3:+VERS-TLS1.2:+VERS-DTLS1.2', next ''
gnutls[2]: selected priority string: NONE:+ECDHE-RSA:+ECDHE-ECDSA:+RSA:+DHE-RSA:+GROUP-X25519:+GROUP-X448:+GROUP-SECP256R1:+GROUP-SECP384R1:+GROUP-SECP521R1:+GROUP-FFDHE2048:+GROUP-FFDHE3072:+GROUP-FFDHE4096:+GROUP-FFDHE6144:+GROUP-FFDHE8192:+AES-256-GCM:+AES-256-CCM:+CHACHA20-POLY1305:+AES-256-CBC:+AES-128-GCM:+AES-128-CCM:+AES-128-CBC:+AEAD:+SHA1:+SHA512:+SIGN-ECDSA-SHA256:+SIGN-ECDSA-SHA384:+SIGN-ECDSA-SHA512:+SIGN-EdDSA-Ed25519:+SIGN-RSA-PSS-SHA256:+SIGN-RSA-PSS-SHA384:+SIGN-RSA-PSS-SHA512:+SIGN-RSA-PSS-RSAE-SHA256:+SIGN-RSA-PSS-RSAE-SHA384:+SIGN-RSA-PSS-RSAE-SHA512:+SIGN-RSA-SHA256:+SIGN-RSA-SHA384:+SIGN-RSA-SHA512:+VERS-TLS1.3:+VERS-TLS1.2:+VERS-DTLS1.2
gnutls[2]: added 3 protocols, 29 ciphersuites, 13 sig algos and 10 groups into priority list
gnutls[2]: Keeping ciphersuite 13.02 (GNUTLS_AES_256_GCM_SHA384)
gnutls[2]: Keeping ciphersuite 13.03 (GNUTLS_CHACHA20_POLY1305_SHA256)
gnutls[2]: Keeping ciphersuite 13.01 (GNUTLS_AES_128_GCM_SHA256)
gnutls[2]: Keeping ciphersuite 13.04 (GNUTLS_AES_128_CCM_SHA256)
gnutls[2]: Keeping ciphersuite c0.30 (GNUTLS_ECDHE_RSA_AES_256_GCM_SHA384)
gnutls[2]: Keeping ciphersuite cc.a8 (GNUTLS_ECDHE_RSA_CHACHA20_POLY1305)
gnutls[2]: Keeping ciphersuite c0.14 (GNUTLS_ECDHE_RSA_AES_256_CBC_SHA1)
gnutls[2]: Keeping ciphersuite c0.2f (GNUTLS_ECDHE_RSA_AES_128_GCM_SHA256)
gnutls[2]: Keeping ciphersuite c0.13 (GNUTLS_ECDHE_RSA_AES_128_CBC_SHA1)
gnutls[2]: Keeping ciphersuite c0.2c (GNUTLS_ECDHE_ECDSA_AES_256_GCM_SHA384)
gnutls[2]: Keeping ciphersuite c0.ad (GNUTLS_ECDHE_ECDSA_AES_256_CCM)
gnutls[2]: Keeping ciphersuite cc.a9 (GNUTLS_ECDHE_ECDSA_CHACHA20_POLY1305)
gnutls[2]: Keeping ciphersuite c0.0a (GNUTLS_ECDHE_ECDSA_AES_256_CBC_SHA1)
gnutls[2]: Keeping ciphersuite c0.2b (GNUTLS_ECDHE_ECDSA_AES_128_GCM_SHA256)
gnutls[2]: Keeping ciphersuite c0.ac (GNUTLS_ECDHE_ECDSA_AES_128_CCM)
gnutls[2]: Keeping ciphersuite c0.09 (GNUTLS_ECDHE_ECDSA_AES_128_CBC_SHA1)
gnutls[2]: Keeping ciphersuite 00.9d (GNUTLS_RSA_AES_256_GCM_SHA384)
gnutls[2]: Keeping ciphersuite c0.9d (GNUTLS_RSA_AES_256_CCM)
gnutls[2]: Keeping ciphersuite 00.35 (GNUTLS_RSA_AES_256_CBC_SHA1)
gnutls[2]: Keeping ciphersuite 00.9c (GNUTLS_RSA_AES_128_GCM_SHA256)
gnutls[2]: Keeping ciphersuite c0.9c (GNUTLS_RSA_AES_128_CCM)
gnutls[2]: Keeping ciphersuite 00.2f (GNUTLS_RSA_AES_128_CBC_SHA1)
gnutls[2]: Keeping ciphersuite 00.9f (GNUTLS_DHE_RSA_AES_256_GCM_SHA384)
gnutls[2]: Keeping ciphersuite c0.9f (GNUTLS_DHE_RSA_AES_256_CCM)
gnutls[2]: Keeping ciphersuite cc.aa (GNUTLS_DHE_RSA_CHACHA20_POLY1305)
gnutls[2]: Keeping ciphersuite 00.39 (GNUTLS_DHE_RSA_AES_256_CBC_SHA1)
gnutls[2]: Keeping ciphersuite 00.9e (GNUTLS_DHE_RSA_AES_128_GCM_SHA256)
gnutls[2]: Keeping ciphersuite c0.9e (GNUTLS_DHE_RSA_AES_128_CCM)
gnutls[2]: Keeping ciphersuite 00.33 (GNUTLS_DHE_RSA_AES_128_CBC_SHA1)
gnutls[3]: ASSERT: mpi.c[wrap_nettle_mpi_print]:60
gnutls[3]: ASSERT: mpi.c[wrap_nettle_mpi_print]:60
gnutls[2]: Advertizing version 3.4
gnutls[2]: Advertizing version 3.3
gnutls[2]: HSK[0x557f285bcb90]: sent server name: 'google.com'
gnutls[3]: ASSERT: buffers.c[get_last_packet]:1185
gnutls[3]: ASSERT: buffers.c[_gnutls_io_read_buffered]:589
gnutls[3]: ASSERT: buffers.c[get_last_packet]:1185
gnutls[3]: ASSERT: buffers.c[get_last_packet]:1176
gnutls[3]: ASSERT: buffers.c[_gnutls_handshake_io_recv_int]:1428
gnutls[2]: EXT[0x557f285bcb90]: client generated X25519 shared key
gnutls[3]: ASSERT: buffers.c[get_last_packet]:1185
gnutls[3]: ASSERT: buffers.c[get_last_packet]:1185
gnutls[3]: ASSERT: buffers.c[get_last_packet]:1176
gnutls[3]: ASSERT: buffers.c[_gnutls_handshake_io_recv_int]:1446
gnutls[3]: ASSERT: buffers.c[_gnutls_handshake_io_recv_int]:1428
gnutls[3]: ASSERT: buffers.c[get_last_packet]:1185
gnutls[3]: ASSERT: buffers.c[_gnutls_handshake_io_recv_int]:1446
gnutls[3]: ASSERT: tls13-sig.c[_gnutls13_handshake_verify_data]:75
gnutls[3]: ASSERT: tls13/certificate_verify.c[_gnutls13_recv_certificate_verify]:131
gnutls[3]: ASSERT: handshake-tls13.c[_gnutls13_handshake_client]:129
GnuTLS: An illegal parameter has been received.
Unable to establish SSL connection.

Happening post allowlisting config
Related commits:-
- https://gitlab.com/redhat/centos-stream/rpms/crypto-policies/-/commit/7c076748f30246f7f94d6af03de8e4c95f99841c
- https://gitlab.com/redhat/centos-stream/rpms/gnutls/-/commit/4d8e88418fa28399deab6efce8b46c6c3f3af312


With more debug enabled, export GNUTLS_DEBUG_LEVEL=4

gnutls[4]: HSK[0x561a015081a0]: Parsing certificate verify
gnutls[4]: HSK[0x561a015081a0]: verifying TLS 1.3 handshake data using ECDSA-SECP256R1-SHA256
gnutls[4]: Signature algorithm ECDSA-SECP256R1-SHA256 is not enabled

if i add [overrides]/secure-sig = ECDSA-SECP256R1-SHA256 in /etc/crypto-policies/back-ends/gnutls.config, wget to failing sites works.
Also to NOTE is this not happens to every site, like it worked for https://opendev.org, https://cloud.centos.org etc.

Comment 1 Alfredo Moralejo 2021-07-06 14:51:06 UTC

As an additional info, it works fine with curl.

Comment 2 Alexander Sosedkin 2021-07-07 11:21:30 UTC

Thanks for your very detailed analysis, this indeed seems to be the product of my last minute decision of not listing ECDSA-SECP*-SHA* sigalgs explicitly,
influenced by https://gitlab.com/gnutls/gnutls/-/blob/c70941cea73cb38e0d27395e63aafca12dac9a72/lib/algorithms/sign.c#L146
We should list them explicitly.

Comment 10 Richard W.M. Jones 2021-08-23 14:39:34 UTC

crypto-policies-20210707-2.git29f6c0b.el9.noarch fixed this
problem for me.  Trivial test case that failed before:

$ wget https://github.com/mirror/mingw-w64/commit/0dd9563a3ad71ad75cab1699ba5cfef2dd0bf9d8.patch

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