Enigmail up to 1.9.8 Regular Expression cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Enigmail up to 1.9.8. This affects an unknown part of the component Regular Expression. The manipulation leads to cryptographic issue. This vulnerability is uniquely identified as CVE-2017-17843. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Enigmail up to 1.9.8 and classified as critical. This issue affects some unknown processing of the component Regular Expression. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Enigmail before 1.9.9 that allows remote attackers to trigger use of an intended public key for encryption, because incorrect regular expressions are used for extraction of an e-mail address from a comma-separated list, as demonstrated by a modified Full Name field and a homograph attack, aka TBE-01-002.

The bug was discovered 12/22/2017. The weakness was disclosed 12/27/2017 (Website). It is possible to read the advisory at debian.org. The identification of this vulnerability is CVE-2017-17843 since 12/22/2017. The attack may be initiated remotely. No form of authentication is needed for a successful 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 attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

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-111048, VDB-111049, VDB-111050 and VDB-111051 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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-2017-17843 (🔍)
GCVE (CVE): GCVE-0-2017-17843
GCVE (VulDB): GCVE-100-111047

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 12/28/2017 09:39
Updated: 01/19/2023 08:26
Changes: 12/28/2017 09:39 (70), 12/18/2019 08:34 (2), 01/19/2023 08:26 (4)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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