AIX GZ Library UAF Double Free Enables Local Priv Escalation
CVE-2023-20664 Published on April 6, 2023

In gz, there is a possible double free due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07505952; Issue ID: ALPS07505952.

NVD

Vulnerability Analysis

CVE-2023-20664 is exploitable with local system access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
HIGH
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Dangling pointer Vulnerability?

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

CVE-2023-20664 has been classified to as a Dangling pointer vulnerability or weakness.


Products Associated with CVE-2023-20664

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Google Android
 
IBM Aix
 

Affected Versions

MediaTek, Inc. MT6580, MT6735, MT6737, MT6739, MT6753, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8168, MT8185, MT8188, MT8321, MT8362A, MT8365, MT8385, MT8666, MT8673, MT8675, MT8696, MT8765, MT8766, MT8768, MT8771, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8795T, MT8797, MT8798, MT8871, MT8891 Version Android 10.0, 11.0, 12.0, 13.0 is affected by CVE-2023-20664

Exploit Probability

EPSS
0.03%
Percentile
7.43%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.