Enigmail up to 1.9.8 Multipart Message Messages signature verification

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Enigmail up to 1.9.8 and classified as critical. The impacted element is an unknown function of the component Multipart Message Handler. Executing a manipulation as part of Messages can lead to signature verification. This vulnerability is tracked as CVE-2017-17848. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Enigmail up to 1.9.8. This vulnerability affects an unknown code of the component Multipart Message Handler. The manipulation as part of a Messages leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

An issue was discovered in Enigmail before 1.9.9. In a variant of CVE-2017-17847, signature spoofing is possible for multipart/related messages because a signed message part can be referenced with a cid: URI but not actually displayed. In other words, the entire containing message appears to be signed, but the recipient does not see any of the signed text.

The bug was discovered 12/22/2017. The weakness was disclosed 12/27/2017 (Website). The advisory is shared for download at lists.debian.org. This vulnerability was named CVE-2017-17848 since 12/22/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit 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). The entries VDB-111047, VDB-111048, VDB-111049 and VDB-111050 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Enigmail

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

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: 152703
Status: Not defined

CVE: CVE-2017-17848 (🔍)
GCVE (CVE): GCVE-0-2017-17848
GCVE (VulDB): GCVE-100-111052

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 12/28/2017 09:40
Updated: 01/19/2023 08:40
Changes: 12/28/2017 09:40 (70), 12/18/2019 08:43 (2), 01/19/2023 08:37 (4), 01/19/2023 08:40 (1)
Complete: 🔍
Cache ID: 216::103