CVE-2023-45663 - CVE House
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Status published Medium CVE-2023-45663

Disclosure of uninitialized memory in stbi__tga_load in stb_image

Vulnerability Description

stb_image is a single file MIT licensed library for processing images. The stbi__getn function reads a specified number of bytes from context (typically a file) into the specified buffer. In case the file stream points to the end, it returns zero. There are two places where its return value is not checked: In the `stbi__hdr_load` function and in the `stbi__tga_load` function. The latter of the two is likely more exploitable as an attacker may also control the size of an uninitialized buffer.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2023-45682
Wild address read in vorbis_decode_packet_rest in stb_vorbis
Medium 5.3
CVE-2023-45681
Out of bounds heap buffer write in stb_vorbis
High 7.3
CVE-2023-45680
Null pointer dereference in vorbis_deinit in stb_vorbis
Medium 5.3
CVE-2023-45679
Attempt to free an uninitialized memory pointer in vorbis_deinit in stb_vorbis
High 7.3
CVE-2023-45678
Off-by-one heap buffer write in start_decoder in stb_vorbis
Medium 6.5

Affected Vendor

Affected Software

stb
Vulnerable Versions:
<= 2.28

Timeline

Official Publish: October 20th, 2023
Last Modified: February 13th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-908

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution
Execution
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1499.003 Application Exhaustion Flood
Impact