Information disclosure via uncleared decoder pixel buffers
Published Apr 15, 2024 · Updated Aug 2, 2024
Information disclosure in Six Labors ImageSharp before 2.1.8 and 3.0.0 through 3.1.3 allows attackers to expose process memory via crafted images. The JPEG SpectralConverter and TGA decoder allocate output pixel buffers without clearing reused memory, so undecoded pixels retain data from prior allocations. A consuming application must process an attacker-supplied JPEG or TGA and expose the resulting image buffer; integrity and availability are unaffected.
Summary
What happened
Information disclosure in Six Labors ImageSharp before 2.1.8 and 3.0.0 through 3.1.3 allows attackers to expose process memory via crafted images. The JPEG SpectralConverter and TGA decoder allocate output pixel buffers without clearing reused memory, so undecoded pixels retain data from prior allocations. A consuming application must process an attacker-supplied JPEG or TGA and expose the resulting image buffer; integrity and availability are unaffected.
The record
- CVE
- CVE-2024-32036
- Published
- Apr 15, 2024
- Updated
- Aug 2, 2024
- Vendor
- Six Labors
- Product
- ImageSharp
- Classifications
- CWE-226, CWE-212, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 15, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 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 <2.1.8
- Affected versionversion=< 2.1.8
- Affected versionversion=>= 3.0.0, < 3.1.4
- Affected versionversion=3.0.0 <=3.1.4
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
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Technologies
Your stack
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Your stack
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