• openpgp.js vulnerability

    From August Abolins@2:221/1.58 to All on Sunday, May 25, 2025 11:30:00
    Best to patch up!

    There is a CVE-2025-47934 issued for the openpgp.js issue
    mentioned a few days ago.

    People using Mailvelop, Flowcrypt, Mymail-crypt, UDC,
    Encrypt.to, PGP Anywhere, passbolt ..should be wary.

    Protonmali seems to be using one of the openpgp.js packages out
    there too, but I cannot confirm which one.

    ""Proton Mail uses version 3.0 of OpenPGPjs. This version,
    released in March 2018, includes improvements that enable full interoperability with PGP and allows for better overall
    functionality, as outlined by Proton." ..that's their
    statement from 2018.

    So.. does Protonmail use this one..
    https://github.com/ProtonMail/gopenpgp ?

    Or this one..
    https://Github.com/openpgpjs/openpgpjs ..has 6.1.0.


    "In technical terms, the vulnerability arises because
    OpenPGP.js fails to correctly associate the extracted message
    data with its actual signature during verification. This
    oversight allows attackers to manipulate the content of a
    message while retaining a valid signature from a previous,
    unrelated message.

    "In order to spoof a message," the advisory explains, "the
    attacker needs a single valid message signature (inline or
    detached) as well as the plaintext data that was legitimately
    signed. They can then construct an inline-signed or signed-and-
    encrypted message containing any data of their choice, which
    will appear as legitimately signed."

    "This means a bad actor can reuse a valid signature to forge
    new content that appears authentic to the recipient, bypassing
    the trust model OpenPGP is built upon.

    Mozilla's Response and Patches
    In response to these vulnerabilities, Mozilla has issued
    security patches for the following versions:

    Mozilla Firefox 134
    Mozilla Thunderbird 134
    Firefox ESR 115.19 and 128.6
    Thunderbird ESR 115.19 and 128.6

    https://thecyberexpress.com/critical-vulnerabilities-in-mozilla-products/


    --- OpenXP 5.0.64
    * Origin: What do you call an excavated pyramid? Unencrypted. (2:221/1.58)