J-Security Center

Title: Eudora 3.X with PGP "Spelling" Vulnerability

Severity: INFO

Description:

Eudora 3.X with NAI's PGP product may exhibit strange behavior when the user has configured the Eudora client to perform spell-checking upon message "send". Due to a bug in the manner in which Eudora 3.X processes the sign and spellcheck commands, the document is first signed/encrypted (with PGP), and is then spell-checked. Should the user modify the document after it has been signed (ie correct the spelling identified by the spellchecker), they will have invalidated the PGP signature.

Affected Products:

  • Qualcomm Eudora 3.0.0X

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