Citadel up to webcit-932 STARTTLS Command missing encryption

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Citadel up to webcit-932. It has been classified as problematic. Affected by this issue is some unknown functionality of the component STARTTLS Command Handler. The manipulation leads to missing encryption. This vulnerability is referenced as CVE-2021-37845. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Citadel up to webcit-932. It has been rated as problematic. This issue affects an unknown code block of the component STARTTLS Command Handler. The manipulation with an unknown input leads to a missing encryption vulnerability. Using CWE to declare the problem leads to CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. Impacted is confidentiality. The summary by CVE is:

An issue was discovered in Citadel through webcit-932. A meddler-in-the-middle attacker can fixate their own session during the cleartext phase before a STARTTLS command (a violation of "The STARTTLS command is only valid in non-authenticated state." in RFC2595). This potentially allows an attacker to cause a victim's e-mail messages to be stored into an attacker's IMAP mailbox, but depends on details of the victim's client behavior.

The weakness was published 05/30/2023. The advisory is shared at uncensored.citadel.org. The identification of this vulnerability is CVE-2021-37845 since 08/02/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

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

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.7
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Missing encryption
CWE: CWE-311 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/02/2021 🔍
05/30/2023 +666 days 🔍
05/30/2023 +0 days 🔍
06/21/2023 +22 days 🔍

Sourcesinfo

Advisory: uncensored.citadel.org
Status: Confirmed

CVE: CVE-2021-37845 (🔍)
GCVE (CVE): GCVE-0-2021-37845
GCVE (VulDB): GCVE-100-230165

Entryinfo

Created: 05/30/2023 06:43
Updated: 06/21/2023 23:42
Changes: 05/30/2023 06:43 (37), 06/21/2023 23:42 (9)
Complete: 🔍
Cache ID: 216::103

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