Vulnerability Description
KDE Messagelib through 5.17.0 reveals cleartext of encrypted messages in some situations. Deleting an attachment of a decrypted encrypted message stored on a remote server (e.g., an IMAP server) causes KMail to upload the decrypted content of the message to the remote server. With a crafted message, a user could be tricked into decrypting an encrypted message and then deleting an attachment attached to this message. If the attacker has access to the messages stored on the email server, then the attacker could read the decrypted content of the encrypted message. This occurs in ViewerPrivate::deleteAttachment in messageviewer/src/viewer/viewer_p.cpp.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kde | Messagelib | <= 5.17.0 |
Related Weaknesses (CWE)
References
- https://github.com/KDE/messagelib/commit/3b5b171e91ce78b966c98b1292a1bcbc8d98479
- https://kde.org/info/security/advisory-20210429-1.txtVendor Advisory
- https://github.com/KDE/messagelib/commit/3b5b171e91ce78b966c98b1292a1bcbc8d98479
- https://kde.org/info/security/advisory-20210429-1.txtVendor Advisory
FAQ
What is CVE-2021-31855?
CVE-2021-31855 is a vulnerability with a CVSS score of 6.5 (MEDIUM). KDE Messagelib through 5.17.0 reveals cleartext of encrypted messages in some situations. Deleting an attachment of a decrypted encrypted message stored on a remote server (e.g., an IMAP server) cause...
How severe is CVE-2021-31855?
CVE-2021-31855 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-31855?
Check the references section above for vendor advisories and patch information. Affected products include: Kde Messagelib.