SB2018122503 - Denial of service in GNU Libextractor

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Main Vulnerability Database SB2018122503

SB2018122503 - Denial of service in GNU Libextractor

Published: December 25, 2018

Security Bulletin ID SB2018122503
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2018-20430)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/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 out-of-bounds read in the function history_extract() in plugins/ole2_extractor.c, related to EXTRACTOR_common_convert_to_utf8 in common/convert.c. A remote attacker can perform a denial of service (DoS) attack.


2) NULL pointer dereference (CVE-ID: CVE-2018-20431)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/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 a NULL pointer dreference error in the function process_metadata() in plugins/ole2_extractor.c. A remote attacker can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References