Code execution via unchecked Vorbis comment lengths
Published Oct 20, 2023 · Updated Sep 12, 2024
Out-of-bounds write in stb_vorbis 1.22 and earlier allows attackers to execute code by supplying a crafted Ogg Vorbis file. start_decoder uses an unchecked signed comment length for allocation and then as an index; negative values underwrite the vendor buffer, while INT_MAX makes len+1 overflow. Exploitation requires a consuming application to decode attacker-controlled input with a caller-supplied allocation buffer, allowing successful writes to corrupt memory and execute code.
Summary
What happened
Out-of-bounds write in stb_vorbis 1.22 and earlier allows attackers to execute code by supplying a crafted Ogg Vorbis file. start_decoder uses an unchecked signed comment length for allocation and then as an index; negative values underwrite the vendor buffer, while INT_MAX makes len+1 overflow. Exploitation requires a consuming application to decode attacker-controlled input with a caller-supplied allocation buffer, allowing successful writes to corrupt memory and execute code.
The record
- CVE
- CVE-2023-45677
- Published
- Oct 20, 2023
- Updated
- Sep 12, 2024
- Vendor
- Sean Barrett
- Product
- stb
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 20, 2023CVE publishedPublication date reported by the CVE source.
- Sep 12, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=1.22
- Affected versionversion=<= 1.22
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- GitHub Security Lab AddressSanitizer reproducerproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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