Arbitrary code execution via LZO length overflow
Published Jan 14, 2020 · Updated Aug 6, 2024
Integer overflow in FFmpeg's LZO decoder allows remote attackers to execute arbitrary code through a crafted video containing a literal run. In libavutil/lzo.c, get_len adds 255 for each zero byte into signed cnt until it wraps negative, and later pointer adjustments move the output pointer before its buffer. The attack requires playback of attacker-supplied media and affects FFmpeg before 0.10.14, 1.1.x before 1.1.12, 1.2.x before 1.2.7, 2.0.x before 2.0.5, 2.1.x before 2.1.5, and 2.2.x before 2.2.4.
Summary
What happened
Integer overflow in FFmpeg's LZO decoder allows remote attackers to execute arbitrary code through a crafted video containing a literal run. In libavutil/lzo.c, get_len adds 255 for each zero byte into signed cnt until it wraps negative, and later pointer adjustments move the output pointer before its buffer. The attack requires playback of attacker-supplied media and affects FFmpeg before 0.10.14, 1.1.x before 1.1.12, 1.2.x before 1.2.7, 2.0.x before 2.0.5, 2.1.x before 2.1.5, and 2.2.x before 2.2.4.
The record
- CVE
- CVE-2014-4610
- Published
- Jan 14, 2020
- Updated
- Aug 6, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-190, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 14, 2020CVE publishedPublication date reported by the CVE source.
- Aug 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- FFmpeg LZO exploit reportfunctional · demonstrated
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Technologies
Your stack
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Your stack
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