ag-psd is a JavaScript library for reading and writing Photoshop Document files

Why it is Yellow

• CVSS 7.5 high
• Remotely exploitable without logging in

References

• https://github.com/Agamnentzar/ag-psd/commit/57ea7d865238b6b7c8a2e976bcf2a77e03116e2f
• https://github.com/Agamnentzar/ag-psd/releases/tag/31.0.3
• https://github.com/Agamnentzar/ag-psd/security/advisories/GHSA-6w3r-6hpr-hp6p

Original description

ag-psd is a JavaScript library for reading and writing Photoshop Document files. Prior to 31.0.3, readPsd() accepts a totalMemoryLimit for parsing untrusted PSD files, but decodeLayerImageData expects a differently named memoryLimit property and therefore passes an undefined limit to createImageDataBitDepth. An attacker who can supply a PSD to an application with layer decoding enabled can use attacker-controlled layer dimensions to trigger an allocation larger than the configured limit, causing process memory exhaustion and denial of service. The advisory also identifies inflateSync(compressed) decompressing ZIP-encoded channel data without an output-size cap, which can cause a similar denial of service through unbounded decompression. This vulnerability is fixed in 31.0.1.