Security Bulletin
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
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
13 September 2016: Initial version
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
16 June 2018
UID
swg21989048