MicroPython 1.21.0/1.22.0-preview extmod/modselect.c poll_set_add_fd use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.05

A vulnerability, which was classified as critical, has been found in MicroPython 1.21.0/1.22.0-preview (Programming Language Software). Affected by this issue is the function poll_set_add_fd of the file extmod/modselect.c. The manipulation with an unknown input 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 confidentiality, integrity, and availability.

The weakness was presented 12/28/2023 by Junwha Hong and Wonil Jang with UNIST S2Lab as 12887 as confirmed issue (GitHub). The advisory is available at github.com. This vulnerability is handled as CVE-2023-7152. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

Applying the patch 8b24aa36ba978eafc6114b6798b47b7bfecdca26 is able to eliminate this problem. The bugfix is ready for download at github.com.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔒
VulDB CVSS-BT Score: 🔒
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 5.5
CNA Vector (VulDB): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Local: No
Remote: Partially

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

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: 🔒

Patch: 8b24aa36ba978eafc6114b6798b47b7bfecdca26

Timelineinfo

12/28/2023 Advisory disclosed
12/28/2023 +0 days CVE reserved
12/28/2023 +0 days VulDB entry created
01/20/2024 +23 days VulDB entry last update

Sourcesinfo

Advisory: 12887
Researcher: Junwha Hong, Wonil Jang
Organization: UNIST S2Lab
Status: Confirmed

CVE: CVE-2023-7152 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/28/2023 11:35
Updated: 01/20/2024 10:08
Changes: 12/28/2023 11:35 (44), 12/29/2023 09:58 (6), 01/20/2024 10:04 (2), 01/20/2024 10:08 (28)
Complete: 🔍
Submitter: qbit
Cache ID: 3:D60:103

Submitinfo

Accepted

  • Submit #259231: micropython micropython v1.21.0 to v1.22.0-preview use after free (by qbit)

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