Bug 748394 - SEC_ERROR_BAD_SIGNATURE with a certificate trusted by OpenSSL
Summary: SEC_ERROR_BAD_SIGNATURE with a certificate trusted by OpenSSL
Alias: None
Product: Fedora
Classification: Fedora
Component: nss
Version: 15
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Elio Maldonado Batiz
QA Contact: Fedora Extras Quality Assurance
Depends On:
Blocks: 748401
TreeView+ depends on / blocked
Reported: 2011-10-24 10:49 UTC by Jan Vcelak
Modified: 2013-03-04 01:29 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 748401 (view as bug list)
Last Closed: 2012-08-07 19:18:47 UTC
Type: ---

Attachments (Terms of Use)
full backtrace (9.77 KB, text/plain)
2011-10-24 10:50 UTC, Jan Vcelak
no flags Details
data for reproduction (5.08 KB, application/x-compressed-tar)
2011-10-24 11:06 UTC, Jan Vcelak
no flags Details

Description Jan Vcelak 2011-10-24 10:49:39 UTC
Description of problem:

The problem can be reproduced with OpenLDAP. It was reported in OpenLDAP upstream issue tracker (http://www.openldap.org/lists/openldap-bugs/201110/msg00021.html). In fact this is a problem of Mozilla NSS. Fedora is affected.

Version-Release number of selected component (if applicable):


Steps to Reproduce:
1. Create CA certificate with DSA signature
2. Create server certificate with RSA signature
3. Sign the certificate by generated CA certificate
4. setup slapd to use these certificates (TLSCertificateFile, TLSCertificateKeyFile, do not set TLSCACertificateFile) and start the server
5. LDAPTLS_CACERT=/your/cacert.pem ldapsearch -x -ZZ -d1 -H ldap://your-server

Actual results:

TLS: loaded CA certificate file /tmp/CA/CA/cacert.pem.
TLS: certificate [CN=alioth.usersys.redhat.com,O=jvcelak Red Hat Test,L=Brno,C=CZ] is not valid - error -8182:Unknown code ___f 10.
TLS: error: connect - force handshake failure: errno 21 - moznss error -8182
TLS: can't connect: TLS error -8182:Unknown code ___f 10.
ldap_start_tls: Connect error (-11)
        additional info: TLS error -8182:Unknown code ___f 10

The server side result:

connection_get(12): got connid=1002
connection_read(12): checking for input on id=1002
connection_get(12): got connid=1002
connection_read(12): checking for input on id=1002
TLS: error: accept - force handshake failure: errno 11 - moznss error -12271
TLS: can't accept: TLS error -12271:Unknown code ___P 17.
connection_read(12): TLS accept failure error=-1 id=1002, closing

Expected results:

The connection will succeed.

Additional info:

The failure comes from DSAU_ConvertSignedToFixedUnsigned ->  line 120.

116     if (zCount <= 0) {
117         /* Source is longer than destination.  Check for leading zeros. */
118         while (zCount++ < 0) {
119             if (*pSrc++ != 0)
120                 goto loser;
121         }
122     }

I will attach full backtrace. And configuration file with certificates.

(Do not set TLSCACertificateFile in step 4., otherwise the server certificate validation will fail on the server side with -8182 and all following TLS requests will be refused. This configuration is easier for debugging, you do not have to restart the server with every request.)

Comment 1 Jan Vcelak 2011-10-24 10:50:16 UTC
Created attachment 529788 [details]
full backtrace

Comment 2 Jan Vcelak 2011-10-24 11:06:16 UTC
Created attachment 529827 [details]
data for reproduction

Extract the archive into /tmp.

start the server: /tmp/slapd-dsa-rsa/run-server.sh
query the server: /tmp/slapd-dsa-rsa/query-server.sh

Comment 3 Fedora End Of Life 2012-08-07 19:18:50 UTC
This message is a notice that Fedora 15 is now at end of life. Fedora
has stopped maintaining and issuing updates for Fedora 15. It is
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of '15' have been closed as WONTFIX.

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