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CVE-2023-45667— Null pointer dereference because of an uninitialized variable in stb_image

Quick assessment

Affected
nothings stb
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

stb是一款用于C/C ++的单文件公共域库。 stb_image 存在安全漏洞，该漏洞源于可能会导致程序崩溃。

CVSS 5.3 · Medium EPSS 1.14% · P66

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-45667

Vulnerability Information
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Vulnerability Title
Null pointer dereference because of an uninitialized variable in stb_image
Source: CVE Program / CVE List V5
Vulnerability Description
stb_image is a single file MIT licensed library for processing images. If `stbi__load_gif_main` in `stbi_load_gif_from_memory` fails it returns a null pointer and may keep the `z` variable uninitialized. In case the caller also sets the flip vertically flag, it continues and calls `stbi__vertical_flip_slices` with the null pointer result value and the uninitialized `z` value. This may result in a program crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
stb_image 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
stb是一款用于C/C ++的单文件公共域库。 stb_image 存在安全漏洞，该漏洞源于可能会导致程序崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nothings stb <= 2.28 -

II. Public POCs for CVE-2023-45667

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III. Intelligence Information for CVE-2023-45667

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Mailing List Discussions for CVE-2023-45667 (3)

Other References for CVE-2023-45667 (3)

Same Patch Batch · nothings · 2023-10-20 · 14 CVEs total

CVE-2023-45681 7.3 HIGH Out of bounds heap buffer write in stb_vorbis
CVE-2023-45679 7.3 HIGH Attempt to free an uninitialized memory pointer in vorbis_deinit in stb_vorbis
CVE-2023-45677 7.3 HIGH Heap buffer out of bounds write in start_decoder in stb_vorbis
CVE-2023-45676 7.3 HIGH Multi-byte write heap buffer overflow in start_decoder in stb_vorbis
CVE-2023-45666 7.3 HIGH Possible double-free or memory leak in stbi__load_gif_main in stb_image
CVE-2023-45664 7.3 HIGH Double-free in stbi__load_gif_main_outofmem in stb_image
CVE-2023-45678 6.5 MEDIUM Off-by-one heap buffer write in start_decoder in stb_vorbis
CVE-2023-45675 6.5 MEDIUM 0 byte write heap buffer overflow in start_decoder in stb_vorbis
CVE-2023-45662 6.5 MEDIUM Multi-byte read heap buffer overflow in stbi__vertical_flip in stb_image
CVE-2023-45661 6.5 MEDIUM Wild address read in stbi__gif_load_next in stb_image
CVE-2023-45682 5.3 MEDIUM Wild address read in vorbis_decode_packet_rest in stb_vorbis
CVE-2023-45680 5.3 MEDIUM Null pointer dereference in vorbis_deinit in stb_vorbis
CVE-2023-45663 5.3 MEDIUM Disclosure of uninitialized memory in stbi__tga_load in stb_image

IV. Related Vulnerabilities

Same product: stb
Same vendor: nothings
Same weakness: CWE-476

V. Comments for CVE-2023-45667

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