Vulnerability Details : CVE-2021-31855
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.
Products affected by CVE-2021-31855
- cpe:2.3:a:kde:messagelib:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31855
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31855
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:N/A:N |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-31855
-
The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31855
-
https://kde.org/info/security/advisory-20210429-1.txt
Vendor Advisory
-
https://github.com/KDE/messagelib/commit/3b5b171e91ce78b966c98b1292a1bcbc8d984799
Fix CVE-2021-31855 · KDE/messagelib@3b5b171 · GitHub
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