SB2021061512 - Multiple vulnerabilities in OpenText Brava! Desktop

Description

This security bulletin contains information about 3 vulnerabilities.

1) Access of Uninitialized Pointer (CVE-ID: CVE-2021-31503)

CWE-ID: CWE-824 - Access of Uninitialized Pointer

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

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to boundary error within the parsing of IGS files. A remote attacker can create a specially crafted IGS file, trick the victim into opening it, access the uninitialized pointer and execute arbitrary code on the system.

2) Untrusted Pointer Dereference (CVE-ID: CVE-2021-31504)

CWE-ID: CWE-822 - Untrusted Pointer Dereference

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

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to boundary error when parsing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger untrusted pointer dereference and execute arbitrary code on the system.

3) Out-of-bounds read (CVE-ID: CVE-2021-31506)

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 parsing of PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Remediation

Install update from vendor's website.

References

• https://www.zerodayinitiative.com/advisories/ZDI-21-645/
• https://www.zerodayinitiative.com/advisories/ZDI-21-646/
• https://www.zerodayinitiative.com/advisories/ZDI-21-647/