[Bug 2054090] Re: Implicit rejection of PKCS#1 v1.5 RSA

[David Fernandez Gonzalez]

** Changed in: openssl (Ubuntu Bionic)
     Assignee: (unassigned) => David Fernandez Gonzalez (litios)

** Changed in: openssl (Ubuntu Focal)
     Assignee: (unassigned) => David Fernandez Gonzalez (litios)

** Changed in: openssl (Ubuntu Jammy)
     Assignee: (unassigned) => David Fernandez Gonzalez (litios)

** Changed in: openssl (Ubuntu Mantic)
     Assignee: (unassigned) => David Fernandez Gonzalez (litios)

** Changed in: openssl (Ubuntu Noble)
     Assignee: (unassigned) => David Fernandez Gonzalez (litios)

** Changed in: openssl (Ubuntu Xenial)
     Assignee: (unassigned) => David Fernandez Gonzalez (litios)

** Changed in: openssl (Ubuntu Trusty)
     Assignee: (unassigned) => David Fernandez Gonzalez (litios)

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https://bugs.launchpad.net/bugs/2054090

Title:
  Implicit rejection of PKCS#1 v1.5 RSA

Status in openssl package in Ubuntu:
  New
Status in openssl source package in Trusty:
  New
Status in openssl source package in Xenial:
  New
Status in openssl source package in Bionic:
  New
Status in openssl source package in Focal:
  New
Status in openssl source package in Jammy:
  New
Status in openssl source package in Mantic:
  New
Status in openssl source package in Noble:
  New

Bug description:
  OpenSSL 3.2.0 introduced a change on PKCS#1 v1.5 RSA to return random
  output instead of an exception when detecting wrong padding
  (https://github.com/openssl/openssl/pull/13817).

  There are available backports already:

  * 3.0 https://gitlab.com/redhat/centos-
  stream/rpms/openssl/-/blob/c9s/0120-RSA-PKCS15-implicit-
  rejection.patch?ref_type=heads

  * 1.1.1 https://gitlab.com/redhat/centos-
  stream/rpms/openssl/-/blob/c8s/openssl-1.1.1-pkcs1-implicit-
  rejection.patch?ref_type=heads

  
  This change is needed to fix CVE-2023-50782.

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