Amazon Linux AMI update for perl

1) Integer overflow

EUVDB-ID: #VU16183

Risk: High

CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-18311

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in Perl_my_setenv when processing malicious input. A remote unauthenticated attacker can supply specially crafted data, trigger heap-based buffer overflow and cause the service to crash or execute arbitrary code with elevated privileges.

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

Mitigation

Update the affected packages:

i686:
    perl-tests-5.16.3-294.43.amzn1.i686
    perl-core-5.16.3-294.43.amzn1.i686
    perl-Time-Piece-1.20.1-294.43.amzn1.i686
    perl-5.16.3-294.43.amzn1.i686
    perl-libs-5.16.3-294.43.amzn1.i686
    perl-macros-5.16.3-294.43.amzn1.i686
    perl-devel-5.16.3-294.43.amzn1.i686
    perl-debuginfo-5.16.3-294.43.amzn1.i686

noarch:
    perl-Object-Accessor-0.42-294.43.amzn1.noarch
    perl-Locale-Maketext-Simple-0.21-294.43.amzn1.noarch
    perl-Pod-Escapes-1.04-294.43.amzn1.noarch
    perl-Module-Loaded-0.08-294.43.amzn1.noarch
    perl-IO-Zlib-1.10-294.43.amzn1.noarch
    perl-CPAN-1.9800-294.43.amzn1.noarch
    perl-ExtUtils-Embed-1.30-294.43.amzn1.noarch
    perl-ExtUtils-CBuilder-0.28.2.6-294.43.amzn1.noarch
    perl-ExtUtils-Install-1.58-294.43.amzn1.noarch
    perl-Package-Constants-0.02-294.43.amzn1.noarch
    perl-Module-CoreList-2.76.02-294.43.amzn1.noarch

src:
    perl-5.16.3-294.43.amzn1.src

x86_64:
    perl-core-5.16.3-294.43.amzn1.x86_64
    perl-debuginfo-5.16.3-294.43.amzn1.x86_64
    perl-macros-5.16.3-294.43.amzn1.x86_64
    perl-5.16.3-294.43.amzn1.x86_64
    perl-Time-Piece-1.20.1-294.43.amzn1.x86_64
    perl-devel-5.16.3-294.43.amzn1.x86_64
    perl-libs-5.16.3-294.43.amzn1.x86_64
    perl-tests-5.16.3-294.43.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2019-1180.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.