Security Bulletin: Multiple vulnerabilities in PCRE library affect IBM Tealeaf Customer Experience

2018-06-1620:03:39

www.ibm.com

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

JSON

Summary

Multiple PCRE vulnerabilities were disclosed on November 28, 2015; March 23, 2016; and June 8, 2016. PCRE is used by IBM Tealeaf Customer Experience. IBM Tealeaf Customer Experience has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2014-9769**
DESCRIPTION:** PCRE is vulnerable to a denial of service, caused by the failure to properly use table jumps to optimize nested alternatives by pcre_jit_compile.c. A remote attacker could exploit this vulnerability using a specially crafted string to corrupt the stack and cause a segmentation fault.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111793 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-2328**
DESCRIPTION:** PCRE is vulnerable to a denial of service, caused by the improper handling of patterns with certain internal recursive back references. A remote attacker could exploit this vulnerability using a specially crafted regular expression to cause a segmentation fault.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109276 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-1283**
DESCRIPTION:** PCRE is vulnerable to a heap-based buffer overflow, caused by the improper handling of patterns by the pcre_compile2() function. By using a specially crafted regular expression, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109363 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2015-2327**
DESCRIPTION:** PCRE is vulnerable to a denial of service, caused by the improper handling of patterns with certain recursion. A remote attacker could exploit this vulnerability using a specially crafted regular expression to cause a segmentation fault.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109275 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

** CVEID: CVE-2015-3210
DESCRIPTION:** PCRE is vulnerable to a heap-based buffer overflow. By sending a specially-crafted regular expression, an attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103511 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVEID: CVE-2016-3191**
DESCRIPTION:** PCRE and PCRE2 are vulnerable to a stack-based buffer overflow, caused by the improper handling of the (ACCEPT) substring by the compile_branch function in pcre_compile.c. By using a specially-crafted regular expression, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111583 for the current score
CVSS Environmental Score: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

IBM Tealeaf Customer Experience: v8.0-v9.0.2

Remediation/Fixes

Product

VRMF

Remediation/First Fix

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