Memory over-read via unterminated VobSub line buffer
Published Jul 6, 2023 · Updated Nov 6, 2024
Out-of-bounds read in GPAC before 2.2.2 allows local users to read process memory by opening a crafted VobSub index file. vobsub_read_idx reads as many as 256 bytes into a 256-byte stack buffer, then passes potentially unterminated data to strtrim and strstr. A user must cause GPAC to parse a crafted subtitle index; the over-read can expose adjacent process memory or crash the process.
Summary
What happened
Out-of-bounds read in GPAC before 2.2.2 allows local users to read process memory by opening a crafted VobSub index file. vobsub_read_idx reads as many as 256 bytes into a 256-byte stack buffer, then passes potentially unterminated data to strtrim and strstr. A user must cause GPAC to parse a crafted subtitle index; the over-read can expose adjacent process memory or crash the process.
The record
- CVE
- CVE-2023-3523
- Published
- Jul 6, 2023
- Updated
- Nov 6, 2024
- Vendor
- GPAC Project
- Product
- GPAC
- Classifications
- CWE-125, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 6, 2023CVE publishedPublication date reported by the CVE source.
- Nov 6, 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 <2.2.2
- Affected versionversion=unspecified <2.2.2
What conditions does exploitation require?
What is affected?
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
- VobSub loader out-of-bounds read proof of conceptproof 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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