Memory exhaustion via unchecked scanline-size calculation
Published Jan 25, 2024 · Updated Aug 3, 2026
Uncontrolled memory allocation in LibTIFF before 4.6.0 allows remote attackers to interrupt services using a crafted TIFF file. TIFFRasterScanlineSize64 multiplies attacker-controlled BitsPerSample, ImageWidth, and SamplesPerPixel values and returns the unchecked size to callers that allocate it. The affected application must pass an untrusted file to the API and allocate the reported size; upstream treats large memory requirements as valid TIFF behavior rather than a library defect.
Summary
What happened
Uncontrolled memory allocation in LibTIFF before 4.6.0 allows remote attackers to interrupt services using a crafted TIFF file. TIFFRasterScanlineSize64 multiplies attacker-controlled BitsPerSample, ImageWidth, and SamplesPerPixel values and returns the unchecked size to callers that allocate it. The affected application must pass an untrusted file to the API and allocate the reported size; upstream treats large memory requirements as valid TIFF behavior rather than a library defect.
The record
- CVE
- CVE-2023-52355
- Published
- Jan 25, 2024
- Updated
- Aug 3, 2026
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 10
- Classifications
- CWE-787, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 25, 2024CVE publishedPublication date reported by the CVE source.
- Aug 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
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.
Weakness, pattern, technique
Public exploit references
- LibTIFF issue 621 proof-of-concept input and harnessproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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