Exim up to 4.94.1 pdkim_finish_bodyhash out-of-bounds

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Exim up to 4.94.1. This affects the function pdkim_finish_bodyhash. The manipulation leads to out-of-bounds. This vulnerability is traded as CVE-2020-28025. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Exim up to 4.94.1 (Mail Server Software). This issue affects the function pdkim_finish_bodyhash. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality.

The weakness was shared 05/06/2021. It is possible to read the advisory at qualys.com. The identification of this vulnerability is CVE-2020-28025. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 4.94.2 eliminates this vulnerability.

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: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: Exim 4.94.2

Timelineinfo

10/30/2020 🔍
05/06/2021 +187 days 🔍
05/06/2021 +0 days 🔍
05/09/2021 +3 days 🔍

Sourcesinfo

Advisory: qualys.com
Status: Confirmed

CVE: CVE-2020-28025 (🔍)
GCVE (CVE): GCVE-0-2020-28025
GCVE (VulDB): GCVE-100-174539

Entryinfo

Created: 05/06/2021 09:40
Updated: 05/09/2021 08:46
Changes: 05/06/2021 09:40 (36), 05/07/2021 09:46 (6), 05/09/2021 08:46 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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