SB2021010517 - Ubuntu update for openexr

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Heap-based buffer overflow (CVE-ID: CVE-2020-16587)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in chunkOffsetReconstruction in ImfMultiPartInputFile.cpp. A remote attacker can use a specially crafted EXR file, trigger heap-based buffer overflow and cause a denial of service condition on the target system.

2) NULL pointer dereference (CVE-ID: CVE-2020-16588)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in generatePreview in makePreview.cpp. A remote attacker can use a specially crafted EXR file and perform a denial of service (DoS) attack.

3) Heap-based buffer overflow (CVE-ID: CVE-2020-16589)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in writeTileData in ImfTiledOutputFile.cpp. A remote attacker can use a specially crafted EXR file, trigger heap-based buffer overflow and cause a denial of service condition on the target system.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-4676-1