Microsoft Exchange Server ChainedSerializationBinder deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$5k-$25k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Exchange Server. This issue affects the function ChainedSerializationBinder. This manipulation causes deserialization. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Microsoft Exchange Server (Groupware Software) (the affected version is unknown) and classified as critical. Affected by this vulnerability is the function ChainedSerializationBinder. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 11/07/2023 as ZDI-23-1578. The advisory is shared at zerodayinitiative.com. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/07/2023). A Microsoft spokesperson responded to BleepingComputer's request for a comment with the statement, that they've reviewed these reports and have found that they have either already been addressed, or do not meet the bar for immediate servicing under the severity classification guidelines and they will evaluate addressing them in future product versions and updates as appropriate.

Upgrading eliminates this vulnerability. Microsoft claims that customers who have applied the August Security Updates are already protected.

Additional details are provided at bleepingcomputer.com. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/07/2023 🔍
11/07/2023 +0 days 🔍
11/07/2023 +0 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: ZDI-23-1578
Status: Confirmed

GCVE (VulDB): GCVE-100-244633
Misc.: 🔍

Entryinfo

Created: 11/07/2023 08:32
Updated: 11/07/2023 08:36
Changes: 11/07/2023 08:32 (37), 11/07/2023 08:36 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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