Dovecot up to 2.3.10.0 Submission-Login Message use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Dovecot up to 2.3.10.0. Affected by this issue is some unknown functionality of the component Submission-Login. The manipulation as part of Message leads to use after free. This vulnerability is uniquely identified as CVE-2020-10958. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Dovecot up to 2.3.10.0 (Mail Server Software). This issue affects an unknown functionality of the component Submission-Login. The manipulation as part of a Message leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability. The summary by CVE is:

In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.

The weakness was disclosed 05/18/2020 (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2020-10958 since 03/25/2020. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.3.10.1 eliminates this vulnerability.

The entries VDB-155386 and VDB-155388 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality 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: Use after free
CWE: CWE-416 / CWE-119
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

03/25/2020 🔍
05/18/2020 +54 days 🔍
05/19/2020 +1 days 🔍
10/18/2020 +152 days 🔍

Sourcesinfo

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

CVE: CVE-2020-10958 (🔍)
GCVE (CVE): GCVE-0-2020-10958
GCVE (VulDB): GCVE-100-155387
See also: 🔍

Entryinfo

Created: 05/19/2020 06:46
Updated: 10/18/2020 16:56
Changes: 05/19/2020 06:46 (41), 05/19/2020 06:51 (12), 10/18/2020 16:56 (1)
Complete: 🔍
Cache ID: 216:102:103

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