VDB-134479 · CVE-2019-11494 · Qualys 197444

Dovecot up to 2.3.5.2 IMAP Server input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Dovecot up to 2.3.5.2. This issue affects some unknown processing of the component IMAP Server. This manipulation causes input validation. The identification of this vulnerability is CVE-2019-11494. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in Dovecot up to 2.3.5.2 (Mail Server Software). Affected by this vulnerability is some unknown functionality of the component IMAP Server. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

In the IMAP Server in Dovecot 2.3.3 through 2.3.5.2, the submission-login service crashes when the client disconnects prematurely during the AUTH command.

The bug was discovered 04/30/2019. The weakness was shared 05/08/2019 (Website). It is possible to read the advisory at lists.fedoraproject.org. This vulnerability is known as CVE-2019-11494 since 04/23/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197444 (Ubuntu Security Notification for Dovecot Vulnerabilities (USN-3961-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entry VDB-134480 is related to this item. Be aware that VulDB is the high quality 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: 6.8
VulDB Meta Temp Score: 6.8

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (MITRE): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/23/2019 🔍
04/30/2019 +7 days 🔍
05/08/2019 +8 days 🔍
05/09/2019 +1 days 🔍
09/15/2023 +1590 days 🔍

Sourcesinfo

Advisory: FEDORA-2019-1b61a528dd
Status: Confirmed

CVE: CVE-2019-11494 (🔍)
GCVE (CVE): GCVE-0-2019-11494
GCVE (VulDB): GCVE-100-134479
See also: 🔍

Entryinfo

Created: 05/09/2019 06:56
Updated: 09/15/2023 08:16
Changes: 05/09/2019 06:56 (57), 06/08/2020 09:37 (2), 09/15/2023 08:14 (3), 09/15/2023 08:16 (12)
Complete: 🔍
Cache ID: 216::103

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

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