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Bug 2128455

Summary: FIPS RSA pairwise consistency test fails for gcry_pk_genkey() with RSA if (test-parms(e ...)(p ...)(q ...)) are specified
Product: Red Hat Enterprise Linux 9 Reporter: Clemens Lang <cllang>
Component: libgcryptAssignee: Jakub Jelen <jjelen>
Status: CLOSED CURRENTRELEASE QA Contact: Stanislav Zidek <szidek>
Severity: high Docs Contact:
Priority: high    
Version: 9.0CC: jjelen, pvlasin, ssorce
Target Milestone: rcKeywords: Triaged, ZStream
Target Release: ---Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: libgcrypt-1.10.0-7.el9_1 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of:
: 2131210 2131668 (view as bug list) Environment:
Last Closed: 2023-06-05 16:02:04 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2131210, 2131668    

Description Clemens Lang 2022-09-20 16:10:54 UTC
Description of problem:
ACVP testing uses an s-expression of "(genkey(rsa(nbits 4:%u)(test-parms(e %zu:%s)(p %%b)(q %%b))))" with a specified e, p and q and passes this to gcry_pk_genkey(). This triggers a special mode inside the key generation that will eventually return a key with p=q=0.

This causes the pairwise consistency test implemented in test_keys_fips() to fail, because a key with p=q=0 cannot be used to sign data and verify the signature.

The test failure causes libgcrypt to transition into the FIPS fatal error mode, which eventually leads to a call of abort(3) during execution of ACVP tests.

Version-Release number of selected component (if applicable):
libgcrypt-1.10.0-5.el9_0

How reproducible:
Run ACVP tests, or call gcry_pk_genkey() in FIPS mode with the s-expression mentioned above.

Actual results:
"self-test after key generation failed", libgcrypt transitions into fatal error state, subsequent calls trigger abort(3).

Expected results:
No abort, either because
- ACVP tests can be modified to use a different approach, or
- the PCT is not run when test-parms is specified, or
- the failing PCT does not move the library into fatal error mode

Comment 2 Clemens Lang 2022-09-21 11:19:58 UTC
Upstream submission: https://lists.gnupg.org/pipermail/gcrypt-devel/2022-September/005379.html

Comment 12 Clemens Lang 2023-06-05 16:02:04 UTC
RHEL 9.1 contains libgcrypt-1.10.0-7.el9_0.