Service interruption via unchecked TIFF allocation sizes
Published Nov 24, 2023 · Updated Jan 22, 2026
Uncontrolled resource consumption in libtiff on Red Hat Enterprise Linux 8 and 9 allows remote attackers to cause a service interrupt. TIFFOpen trusts crafted directory, strip-count, and tag-size values that claim far more data than the file contains, then allocates memory from those values. An application must process an attacker-supplied TIFF file; the resulting memory exhaustion can terminate that process or impair its host, without reported data exposure or modification.
Summary
What happened
Uncontrolled resource consumption in libtiff on Red Hat Enterprise Linux 8 and 9 allows remote attackers to cause a service interrupt. TIFFOpen trusts crafted directory, strip-count, and tag-size values that claim far more data than the file contains, then allocates memory from those values. An application must process an attacker-supplied TIFF file; the resulting memory exhaustion can terminate that process or impair its host, without reported data exposure or modification.
The record
- CVE
- CVE-2023-6277
- Published
- Nov 24, 2023
- Updated
- Jan 22, 2026
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 8
- Classifications
- CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 24, 2023CVE publishedPublication date reported by the CVE source.
- Jan 22, 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?
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
- Issue 614 TIFFOpen out-of-memory reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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