SB2021073013 - Multiple vulnerabilities in libheif

Description

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2020-19498)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

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

The vulnerability exists due to insufficient validation of user-supplied input in libheif/box.cc. A remote attacker can pass specially crafted image to the application and perform a denial of service (DoS) attack.

2) Out-of-bounds read (CVE-ID: CVE-2020-19499)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the heif::Box_iref::get_references() function. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.

Remediation

Install update from vendor's website.

References

• https://github.com/strukturag/libheif/commit/2710c930918609caaf0a664e9c7bc3dce05d5b58
• https://github.com/strukturag/libheif/issues/139
• https://github.com/strukturag/libheif/commit/f7399b62d7fbc596f1b2871578c1d2053bedf1dd
• https://github.com/strukturag/libheif/issues/138