SB2021062251 - Ubuntu update for openexr

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2021-20296)

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 the Dwa decompression functionality. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

2) Integer overflow (CVE-ID: CVE-2021-23215)

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

The vulnerability exists due to integer overflow in the DwaCompressor of OpenEXR. A remote attacker can pass specially crafted data to the application, trigger integer overflow and perform a denial of service (DoS) attack.

3) Integer overflow (CVE-ID: CVE-2021-26260)

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

The vulnerability exists due to integer overflow in the DwaCompressor of OpenEXR. A remote attacker can pass specially crafted data to the application, trigger integer overflow and perform a denial of service attack.

4) Heap-based buffer overflow (CVE-ID: CVE-2021-3598)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the readChars() function in ImfIO.h. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

5) Heap-based buffer overflow (CVE-ID: CVE-2021-3605)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the rleUncompress function in ImfRle.cpp. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-4996-1