CVE-2023-45675— 0 byte write heap buffer overflow in start_decoder in stb_vorbis
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I. Basic Information for CVE-2023-45675
Vulnerability Information
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Vulnerability Title
0 byte write heap buffer overflow in start_decoder in stb_vorbis
Source: NVD (National Vulnerability Database)
Vulnerability Description
stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f->vendor[len] = (char)'\0';`. The root cause is that if the len read in `start_decoder` is `-1` and `len + 1` becomes 0 when passed to `setup_malloc`. The `setup_malloc` behaves differently when `f->alloc.alloc_buffer` is pre-allocated. Instead of returning `NULL` as in `malloc` case it shifts the pre-allocated buffer by zero and returns the currently available memory block. This issue may lead to code execution.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
stb_vorbis 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
stb_vorbis是一款开源的用于解码ogg vorbis文件的音频解码器。 stb_vorbis 存在安全漏洞，该漏洞源于精心设计的文件可能会触发“f->vendor[len] = (char) ;”中的越界写入。
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
II. Public POCs for CVE-2023-45675
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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-2023-45662 | 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-2023-45667 | 5.3 MEDIUM | Null pointer dereference because of an uninitialized variable in stb_image |
| CVE-2023-45663 | 5.3 MEDIUM | Disclosure of uninitialized memory in stbi__tga_load in stb_image |
IV. Related Vulnerabilities
Same product: stb
- CVE-2026-5317
Nothings stb stb_vorbis.c start_decoder out-of-bounds write - CVE-2026-5316
Nothings stb stb_vorbis.c setup_free allocation of resources - CVE-2026-5315
Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of- - CVE-2026-5314
Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal - CVE-2026-5313
Nothings stb GIF Decoder stb_image.h stbi__gif_load_next den
Same vendor: nothings
- CVE-2026-5317
Nothings stb stb_vorbis.c start_decoder out-of-bounds write - CVE-2026-5316
Nothings stb stb_vorbis.c setup_free allocation of resources - CVE-2026-5315
Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of- - CVE-2026-5314
Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal - CVE-2026-5313
Nothings stb GIF Decoder stb_image.h stbi__gif_load_next den
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