CVE-2017-17847

An issue was discovered in Enigmail before 1.9.9. Signature spoofing is possible because the UI does not properly distinguish between an attachment signature, and a signature that applies to the entire containing message, aka TBE-01-021. This is demonstrated by an e-mail message with an attachment that is a signed e-mail message in message/rfc822 format.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.mail-archive.com/enigmail-users@enigmail.net/msg04280.html	Mailing List Vendor Advisory
https://www.debian.org/security/2017/dsa-4070	Third Party Advisory
https://sourceforge.net/p/enigmail/bugs/709/	Third Party Advisory
https://lists.debian.org/debian-security-announce/2017/msg00333.html	Third Party Advisory
https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdf	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00021.html

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Configurations

Configuration 1 (hide)

cpe:2.3:a:enigmail:enigmail:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*

Information

Published : 2017-12-27 09:08

Updated : 2018-02-03 18:29

NVD link : CVE-2017-17847

Mitre link : CVE-2017-17847

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

debian

debian_linux

enigmail

enigmail

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