CVE-2023-45677: Heap buffer out of bounds write in start_decoder in stb_vorbis
First published: Fri Oct 20 2023(Updated: )
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 `len` read in `start_decoder` is a negative number and `setup_malloc` successfully allocates memory in that case, but memory write is done with a negative index `len`. Similarly if len is INT_MAX the integer overflow len+1 happens in `f->vendor = (char*)setup_malloc(f, sizeof(char) * (len+1));` and `f->comment_list[i] = (char*)setup_malloc(f, sizeof(char) * (len+1));`. This issue may lead to code execution.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nothings STB | =1.22 |
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Reference Links
- https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3652-L3658
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3653
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3658
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3670C7-L3670C75
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L950-L961
Frequently Asked Questions
What is CVE-2023-45677?
CVE-2023-45677 is a vulnerability in stb_vorbis library that allows for a heap buffer out of bounds write in start_decoder function.
What is the severity of CVE-2023-45677?
The severity of CVE-2023-45677 is high with a CVSS score of 7.3.
How does CVE-2023-45677 affect the stb_vorbis library?
CVE-2023-45677 affects the stb_vorbis library version 1.22.
How can I fix the CVE-2023-45677 vulnerability?
To fix the CVE-2023-45677 vulnerability, it is recommended to update to the latest version of the stb_vorbis library.
Where can I find more information about CVE-2023-45677?
More information about CVE-2023-45677 can be found in the following references: [link1], [link2], [link3].
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