Security Bulletin: IBM MQ Cloud Paks are vulnerable to multiple vulnerabilities in Perl (CVE-2018-18312 CVE-2018-18313 CVE-2018-18314 CVE-2018-18311)

Summary

Several vulnerabilities were identified with versions of perl which are included in IBM MQ Cloud Paks.

Vulnerability Details

CVEID: CVE-2018-18312
DESCRIPTION: Perl is vulnerable to a heap-based buffer overflow, caused by a flaw in the S_regatom function in regcomp.c. By using a specially-crafted regular expression, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/153587&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2018-18313
DESCRIPTION: Perl could allow a remote attacker to obtain sensitive information, caused by a heap-based buffer overflow in the S_grok_bslash_N function in regcomp.c. By using a specially-crafted regular expression, a remote attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/153588&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2018-18314
DESCRIPTION: Perl is vulnerable to a heap-based buffer overflow, caused by a flaw in the S_regatom function in regcomp.c. By using a specially-crafted regular expression, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/153589&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2018-18311
DESCRIPTION: Perl is vulnerable to a heap-based buffer overflow, caused by an integer overflow in the Perl_my_setenv function. By sending a specially-crafted request, a local attacker could overflow a buffer and execute arbitrary code or cause a denial of service condition.
CVSS Base Score: 8.4
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/153586&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM MQ CloudPak for IBM Cloud Private

v1.0.0 - v2.2.0

Remediation/Fixes

IBM MQ CloudPak for IBM Cloud Private v1.0.0 - v.2.2.0

Apply fix pack IBM-MQ-Adv-Cloud-Pak-2.2.1 to upgrade to version 2.2.1

Workarounds and Mitigations

None