CPython 3.12.0 Alpha 7 /Objects/unicodeobject.c ascii_decode use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in CPython 3.12.0 Alpha 7. This vulnerability affects the function ascii_decode of the file /Objects/unicodeobject.c. Executing a manipulation can lead to use after free. This vulnerability appears as CVE-2023-33595. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as problematic was found in CPython 3.12.0 Alpha 7 (Programming Language Software). This vulnerability affects the function ascii_decode of the file /Objects/unicodeobject.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.

The weakness was presented 06/08/2023 as 103824. The advisory is available at github.com. This vulnerability was named CVE-2023-33595 since 05/22/2023. Technical details are known, but there is no available exploit.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-37751). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
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: Partially
Local: Yes
Remote: Partially

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: 🔍

Patch: github.com

Timelineinfo

05/22/2023 🔍
06/08/2023 +17 days 🔍
06/08/2023 +0 days 🔍
01/05/2026 +942 days 🔍

Sourcesinfo

Advisory: 103824
Status: Confirmed

CVE: CVE-2023-33595 (🔍)
GCVE (CVE): GCVE-0-2023-33595
GCVE (VulDB): GCVE-100-231058
EUVD: 🔍

Entryinfo

Created: 06/08/2023 08:52
Updated: 01/05/2026 04:00
Changes: 06/08/2023 08:52 (41), 07/07/2023 08:17 (10), 01/05/2026 04:00 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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