SB2017092517 - Fedora 26 update for perl

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Main Vulnerability Database SB2017092517

SB2017092517 - Fedora 26 update for perl

Published: September 25, 2017 Updated: April 24, 2025

Security Bulletin ID SB2017092517
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Heap-based buffer overflow (CVE-ID: CVE-2017-12837)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1. A remote attacker can use a regular expression with a to trigger heap-based buffer overflow and execute arbitrary code on the target system.

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


2) Buffer overflow (CVE-ID: CVE-2017-12883)

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

Buffer overflow in the S_grok_bslash_N function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to disclose sensitive information or cause a denial of service (application crash) via a crafted regular expression with an invalid 'N{U+...}' escape.


Remediation

Install update from vendor's website.

References