Dovecot up to 2.3.10.0 lmtp/submission denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Dovecot up to 2.3.10.0. This affects an unknown part of the component lmtp/submission. The manipulation results in denial of service. This vulnerability was named CVE-2020-10967. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Dovecot up to 2.3.10.0 (Mail Server Software). Affected is some unknown functionality of the component lmtp/submission. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash the lmtp or submission process by sending mail with an empty localpart.

The weakness was presented 05/18/2020 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2020-10967 since 03/26/2020. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 2.3.10.1 eliminates this vulnerability.

See VDB-155386 and VDB-155387 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Dovecot 2.3.10.1

Timelineinfo

03/26/2020 🔍
05/18/2020 +53 days 🔍
05/19/2020 +1 days 🔍
10/18/2020 +152 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-10967 (🔍)
GCVE (CVE): GCVE-0-2020-10967
GCVE (VulDB): GCVE-100-155388
See also: 🔍

Entryinfo

Created: 05/19/2020 06:46
Updated: 10/18/2020 17:04
Changes: 05/19/2020 06:46 (40), 05/19/2020 06:51 (12), 10/18/2020 17:04 (1)
Complete: 🔍
Cache ID: 216:938:103

Once again VulDB remains the best source for vulnerability data.

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