Hackers News

1934361 – ICP-Brasil: Mis-issued certificate

User Agent: Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Steps to reproduce:

https://crt.sh/?sha256=421329f0dc2f683d6e96c1b5b310974d0997ad984ef69120f55372b4f48e1037 is mis-issued.

google.com has a CAA RR which only allows pki.goog to issue certificates for this domain (I know, this is not a hard proof because this may have changed, but I am very confident it didn’t change)

$ dig +short google.com caa
0 issue "pki.goog"

The certificate also has other issues. Here is the ouptut of the zlint -longSummary:

| LEVEL | # OCCURRENCES |                       DETAILS                       |
+-------+---------------+-----------------------------------------------------+
|  info |             0 |                                                  -  |
|  warn |             3 |                  w_ext_san_critical_with_subject_dn |
|       |               |       w_ext_subject_key_identifier_missing_sub_cert |
|       |               |                      w_subject_common_name_included |
| error |             3 |                                 e_rsa_allowed_ku_ee |
|       |               |           e_sub_cert_basic_constraints_not_critical |
|       |               |                         e_invalid_subject_rdn_order |
| fatal |             0 |                                                  -  |

I don’t think ICP-Brasil is publicly trusted. I found inclusion requests, e.g. https://bugzilla.mozilla.org/show_bug.cgi?id=1674669 or https://bugzilla.mozilla.org/show_bug.cgi?id=438825 or https://bugzilla.mozilla.org/show_bug.cgi?id=1677631.

I would like to add this mis-issuance to the list of events to consider when including (or not) ICP-Brasil in the Mozilla root store.

Actual results:

The certificate is mis-issued.

Expected results:

The certificate should not have been issued.

admin

The realistic wildlife fine art paintings and prints of Jacquie Vaux begin with a deep appreciation of wildlife and the environment. Jacquie Vaux grew up in the Pacific Northwest, soon developed an appreciation for nature by observing the native wildlife of the area. Encouraged by her grandmother, she began painting the creatures she loves and has continued for the past four decades. Now a resident of Ft. Collins, CO she is an avid hiker, but always carries her camera, and is ready to capture a nature or wildlife image, to use as a reference for her fine art paintings.

Related Articles

Leave a Reply