SB2021101111 - Multiple vulnerabilities in OpenOffice

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Main Vulnerability Database SB2021101111

SB2021101111 - Multiple vulnerabilities in OpenOffice

Published: October 11, 2021

Security Bulletin ID SB2021101111
CSH Severity
High
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 17% Medium 50% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 vulnerabilities.


1) Incorrect default permissions (CVE-ID: CVE-2021-28129)

CWE-ID: CWE-276 - Incorrect Default Permissions

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


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions. The DEB package did not install using root, but instead used a userid and groupid of 500. A local user with the same identifier can escalate privileges on the system.


2) Buffer overflow (CVE-ID: CVE-2021-33035)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/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 execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing dBase/DBF files. A remote attacker can create a specially crafted DBF document, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

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


3) XML Entity Expansion (CVE-ID: CVE-2021-40439)

CWE-ID: CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

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


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

The vulnerability exists due to dependency on an old expat software version. A remote attacker can trick the victim to open a specially crafted ODF file and perform a denial of service (DoS) attack.

The vulnerability in expat is described as #VU42119 (CVE-2013-0340).


4) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2021-41831)

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

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


The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to incorrect signature verification. A remote attacker can manipulate the timestamp of signed documents.


5) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2021-41832)

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

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


The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to incorrect signature verification. A remote attacker can manipulate signed documents and macros to appear to come from a trusted source.


6) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2021-41830)

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

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


The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to incorrect signature verification. A remote attacker can manipulate signed documents and macros to appear to come from a trusted source.


Remediation

Install update from vendor's website.

References