SB2017053018 - Fedora 25 update for yara

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Main Vulnerability Database SB2017053018

SB2017053018 - Fedora 25 update for yara

Published: May 30, 2017 Updated: April 24, 2025

Security Bulletin ID SB2017053018
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2016-10210)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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 a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted rule that is mishandled in the yy_get_next_buffer function.


2) Use-after-free (CVE-ID: CVE-2016-10211)

CWE-ID: CWE-416 - Use After Free

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


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a crafted rule that is mishandled in the yr_parser_lookup_loop_variable function. A remote attackers can cause a denial of service (use-after-free and application crash).

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


3) Out-of-bounds read (CVE-ID: CVE-2017-5923)

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

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


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

libyara/grammar.y in YARA 3.5.0 allows remote attackers to cause a denial of service (heap-based out-of-bounds read and application crash) via a crafted rule that is mishandled in the yara_yyparse function.


4) Use-after-free (CVE-ID: CVE-2017-5924)

CWE-ID: CWE-416 - Use After Free

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


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a crafted rule that is mishandled in the yr_compiler_destroy function. A remote attackers can cause a denial of service (use-after-free and application crash).

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


5) Use-after-free (CVE-ID: CVE-2017-8929)

CWE-ID: CWE-416 - Use After Free

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


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a crafted rule. A remote attackers can cause a denial of service (use-after-free and application crash).

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


Remediation

Install update from vendor's website.

References