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Bug
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Resolution: Unresolved
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Major
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rhel-10.0.beta
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dnf-4.20.0-5.el10
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None
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Important
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rhel-sst-cs-software-management
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ssg_core_services
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22
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24
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None
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QE ack
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False
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No
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None
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Pass
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RegressionOnly
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Unspecified Release Note Type - Unknown
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None
dnf-4.20.0-4.el10 fails to build in RHEL 10 with librepo ≥ 1.18.0-2.el10 if crypto policy differs from LEGACY:
# update-crypto-policies --show DEFAULT [...] $ rhpkg --release rhel-10.0 local 1: ====================================================================== 1: FAIL: test_rawkey2infos (tests.test_crypto.CryptoTest.test_rawkey2infos) 1: ---------------------------------------------------------------------- 1: Traceback (most recent call last): 1: File "/home/test/rhel/dnf/dnf-4.20.0/tests/test_crypto.py", line 75, in test_rawkey2infos 1: self.assertEqual(info.userid, 'Dandy Fied <dnf@example.com>') 1: AssertionError: '' != 'Dandy Fied <dnf@example.com>' 1: + Dandy Fied <dnf@example.com>
The trigger is upgrading librepo from 1.18.0-1.el10.x86_64 to 1.18.0-2.el10.x86_64. That new librepo build started to use rpm-sequoia whose DEFAULT crypto policy disallows SHA-1:
# grep sha1 /etc/crypto-policies/back-ends/sequoia.config sha1.collision_resistance = "never" sha1.second_preimage_resistance = "never"
It seems that GnuPG, which was used before, does not respect a global crypto policy.
The root cause is tests/keys/key.pub PGP key which uses SHA-1 ("digest algo 2"):
$ gpg --list-packets tests/keys/key.pub # off=0 ctb=99 tag=6 hlen=3 plen=269 :public key packet: version 4, algo 1, created 1408534646, expires 0 pkey[0]: [2048 bits] pkey[1]: [17 bits] keyid: 24362A8492530C8E # off=272 ctb=b4 tag=13 hlen=2 plen=28 :user ID packet: "Dandy Fied <dnf@example.com>" # off=302 ctb=89 tag=2 hlen=3 plen=312 :signature packet: algo 1, keyid 24362A8492530C8E version 4, created 1408534646, md5len 0, sigclass 0x13 → digest algo 2, begin of digest fc 65 hashed subpkt 2 len 4 (sig created 2014-08-20) hashed subpkt 27 len 1 (key flags: 03) hashed subpkt 11 len 5 (pref-sym-algos: 9 8 7 3 2) hashed subpkt 21 len 5 (pref-hash-algos: 8 2 9 10 11) hashed subpkt 22 len 3 (pref-zip-algos: 2 3 1) hashed subpkt 30 len 1 (features: 01) hashed subpkt 23 len 1 (keyserver preferences: 80) subpkt 16 len 8 (issuer key ID 24362A8492530C8E) data: [2048 bits] # off=617 ctb=b9 tag=14 hlen=3 plen=269 :public sub key packet: version 4, algo 1, created 1408534646, expires 0 pkey[0]: [2048 bits] pkey[1]: [17 bits] keyid: F9C8AB7D16A32B87 # off=889 ctb=89 tag=2 hlen=3 plen=287 :signature packet: algo 1, keyid 24362A8492530C8E version 4, created 1408534646, md5len 0, sigclass 0x18 digest algo 2, begin of digest 34 bf hashed subpkt 2 len 4 (sig created 2014-08-20) hashed subpkt 27 len 1 (key flags: 0C) subpkt 16 len 8 (issuer key ID 24362A8492530C8E) data: [2046 bits]
A proposed fix is to resign the user identity with a stronger digest algorithm.
- links to
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RHBA-2024:132912
DNF stack bug fix and enhancement update
