Perl Multiple Buffer Overflow Vulnerabilities

Bugtraq ID:	106145
Class:	Boundary Condition Error
CVE:	CVE-2018-18311 CVE-2018-18314
Remote:	Yes
Local:	No
Published:	Nov 29 2018 12:00AM
Updated:	Nov 29 2018 12:00AM
Credit:	The vendor reported these issues.
Vulnerable:	Redhat Software Collections for RHEL 0 Redhat Enterprise Linux 7 Perl Perl 5.28 Perl Perl 5.26.2 Perl Perl 5.26 Perl Perl 5.24.3 Perl Perl 5.22.1 Perl Perl 5.20.2 Perl Perl 5.20.1 Perl Perl 5.18.2 Perl Perl 5.16 Perl Perl 5.14 Perl Perl 5.12.1 Perl Perl 5.12 Perl Perl 5.11 Perl Perl 5.10 Perl Perl 5.9.2 Perl Perl 5.8.10 Perl Perl 5.8.9 Perl Perl 5.8.8 Perl Perl 5.8.7 Perl Perl 5.8.6 Perl Perl 5.8.5 Perl Perl 5.8.4 Perl Perl 5.8.3 Perl Perl 5.8 Perl Perl 5.8.2 Perl Perl 5.8.1 Perl Perl 5.24 Perl Perl 5.22 Perl Perl 5.20 Perl Perl 5.18 Perl Perl 5.17.7 Perl Perl 5.16.2 Perl Perl 5.16.1 Perl Perl 5.14.3 Perl Perl 5.14.2 Perl Perl 5.14.1 Perl Perl 5.13.9 Perl Perl 5.13.8 Perl Perl 5.13.7 Perl Perl 5.13.6 Perl Perl 5.13.5 Perl Perl 5.13.4 Perl Perl 5.13.3 Perl Perl 5.13.2 Perl Perl 5.13.11 Perl Perl 5.13.10 Perl Perl 5.13.1 Perl Perl 5.13.0 Perl Perl 5.12.3 Perl Perl 5.12.2 Perl Perl 5.11.5 Perl Perl 5.11.4 Perl Perl 5.11.3 Perl Perl 5.11.2 Perl Perl 5.11.1 Perl Perl 5.10.1
Not Vulnerable:	Perl Perl 5.28.1 Perl Perl 5.26.3

Perl Multiple Buffer Overflow Vulnerabilities

Perl is prone to the following multiple buffer-overflow vulnerabilities because it fails to properly bounds-check user-supplied input before copying it to an insufficiently sized memory buffer.

1. An integer-overflow vulnerability
2. A heap-based buffer-overflow vulnerability

Attackers can exploit these issues to execute arbitrary code on the affected application. Failed attempts will likely cause a denial-of-service condition.

Perl Multiple Buffer Overflow Vulnerabilities

Currently, we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Perl Multiple Buffer Overflow Vulnerabilities

Solution:
Updates are available. Please see the references or vendor advisory for more information.

Perl Multiple Buffer Overflow Vulnerabilities

References:

• Bug 1646730 (CVE-2018-18311) - CVE-2018-18311 perl: Integer overflow leading to (Red Hat Bugzilla)
  
• Bug 1646751 (CVE-2018-18314) - CVE-2018-18314 perl: Heap-based buffer overflow (Red Hat Bugzilla)
  
• CVE-2018-18311 (Red Hat Bugzilla)
  
• CVE-2018-18314 (Red Hat Bugzilla)
  
• fix #131649 - extended charclass can trigger assert (Perl)
  
• Perl Homepage (Perl)
  
• Perl_my_setenv(); handle integer wrap (Perl)