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cve[email protected]CVE-2017-17688
HistoryMay 16, 2018 - 7:29 p.m.

CVE-2017-17688

2018-05-1619:29:00
[email protected]
web.nvd.nist.gov
46
openpgp
cipher feedback mode
cfb
malleability-gadget attack
plaintext exfiltration
efail
nvd
cve-2017-17688
modification detection code
mdc
packet type
security vulnerability

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.7 Medium

AI Score

Confidence

High

0.008 Low

EPSS

Percentile

82.2%

JSON

The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code (MDC) feature or accept an obsolete packet type, not a problem in the OpenPGP specification

Affected configurations

NVD
Node
applemailMatch-
OR
applemailMatch-iphone_os
OR
bloopairmailMatch-
OR
emclientemclientMatch-
OR
flipdogsolutionsmaildroidMatch-
OR
freronmailmateMatch-
OR
hordehorde_impMatch-
OR
microsoftoutlookMatch2007
OR
mozillathunderbirdMatch-
OR
postbox-incpostboxMatch-
OR
r2mail2r2mail2Match-
OR
roundcubewebmailMatch-

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4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.7 Medium

AI Score

Confidence

High

0.008 Low

EPSS

Percentile

82.2%

JSON
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