Security Bulletin: Multiple vulnerabilities in PCRE affect PowerKVM

Vulnerability Details

CVEID: CVE-2015-8386
DESCRIPTION: PCRE is vulnerable to a heap-based buffer overflow, caused by the improper handling of the interaction of lookbehind assertions and mutually recursive subpatterns. 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/108461 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-2015-8388
DESCRIPTION: PCRE is vulnerable to a heap-based buffer overflow, caused by the improper handling ofpattern and related patterns with an unmatched closing parenthesis. 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/108459 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-2015-8391
DESCRIPTION: PCRE could allow a remote attacker to execute arbitrary code on the system, caused by the mishandling of certain nesting by the pcre_compile function. An attacker could exploit this vulnerability using a specially crafted regular expression to execute arbitrary code on the system or cause a denial of service.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/108456 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-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)

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-2015-3217
DESCRIPTION: PCRE is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the match() function. By sending 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: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103582 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVEID: CVE-2015-5073
DESCRIPTION: PCRE is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the find_fixedlength() function. By sending 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: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104098 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVEID: CVE-2015-8385
DESCRIPTION: PCRE is vulnerable to a heap-based buffer overflow, caused by the improper handling of pattern and related patterns with certain forward references. 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/108462 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)