Enigmail up to 1.9.8 Signature Attachment signature verification

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability classified as critical has been found in Enigmail up to 1.9.8. This affects an unknown part of the component Signature Handler. The manipulation as part of a Attachment leads to a signature verification vulnerability. CWE is classifying the issue as CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

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.

The bug was discovered 12/22/2017. The weakness was released 12/27/2017 (Website). It is possible to read the advisory at debian.org. This vulnerability is uniquely identified as CVE-2017-17847 since 12/22/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 105430 (Debian DSA-4070-1 : enigmail - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading to version 1.9.9 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105430). Entries connected to this vulnerability are available at VDB-111047, VDB-111048, VDB-111049 and VDB-111050.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105430
Nessus Name: Debian DSA-4070-1 : enigmail - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 54750
OpenVAS Name: Debian Security Advisory DSA 4070-1 (enigmail - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Enigmail 1.9.9

Timelineinfo

12/21/2017 🔍
12/22/2017 +1 days 🔍
12/22/2017 +0 days 🔍
12/26/2017 +4 days 🔍
12/27/2017 +1 days 🔍
12/27/2017 +0 days 🔍
12/28/2017 +1 days 🔍
01/19/2023 +1848 days 🔍

Sourcesinfo

Advisory: DLA 1219-1
Status: Not defined

CVE: CVE-2017-17847 (🔍)
OVAL: 🔍
See also: 🔍

Entryinfo

Created: 12/28/2017 09:40 AM
Updated: 01/19/2023 08:36 AM
Changes: 12/28/2017 09:40 AM (70), 12/18/2019 08:42 AM (2), 01/19/2023 08:36 AM (4)
Complete: 🔍
Cache ID: 44:3EE:40

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