FreeBSD lib9p memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in FreeBSD. This affects an unknown part of the component lib9p. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2022-23092. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in FreeBSD (Operating System) (version unknown) and classified as critical. Affected by this issue is an unknown function of the component lib9p. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory. The bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process. This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.

The weakness was shared 02/15/2024 by Robert Morris. The advisory is shared for download at security.freebsd.org. This vulnerability is handled as CVE-2022-23092 since 01/10/2022. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/30/2024).

Applying a patch is able to eliminate this problem.

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Productinfo

Type

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: 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: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/10/2022 🔍
02/15/2024 +766 days 🔍
02/15/2024 +0 days 🔍
08/30/2024 +197 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.freebsd.org
Researcher: Robert Morris
Status: Confirmed

CVE: CVE-2022-23092 (🔍)
GCVE (CVE): GCVE-0-2022-23092
GCVE (VulDB): GCVE-100-253904

Entryinfo

Created: 02/15/2024 08:51
Updated: 08/30/2024 04:51
Changes: 02/15/2024 08:51 (39), 08/30/2024 04:51 (27)
Complete: 🔍
Cache ID: 216::103

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