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AUSCERT External Security Bulletin Redistribution
ESB-2016.0300
sol20225390: Multiple PCRE vulnerabilities
5 February 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP
F5 BIG-IQ
F5 ARX
F5 Enterprise Manager
F5 LineRate
F5 Traffix SDC
Publisher: F5
Operating System: Network Appliance
Virtualisation
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-8395 CVE-2015-8394 CVE-2015-8392
CVE-2015-8391 CVE-2015-8390 CVE-2015-8389
CVE-2015-8388 CVE-2015-8387 CVE-2015-8386
CVE-2015-8385 CVE-2015-8384 CVE-2015-8383
CVE-2015-8382 CVE-2015-8381 CVE-2015-8380
CVE-2015-3217 CVE-2015-2328 CVE-2015-2327
Reference: ESB-2016.0255
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/k/20/sol20225390.html
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sol20225390: Multiple PCRE vulnerabilities
Security Advisory
Original Publication Date: 02/04/2016
Vulnerability Description
CVE-2015-8395
PCRE before 8.38 mishandles certain references, which allows remote attackers
to cause a denial of service or possibly have unspecified other impact via a
crafted regular expression, as demonstrated by a JavaScript RegExp object
encountered by Konqueror, a related issue to CVE-2015-8384 and CVE-2015-8392.
CVE-2015-8394
PCRE before 8.38 mishandles the (?() and (?(R) conditions, which allows remote
attackers to cause a denial of service (integer overflow) or possibly have
unspecified other impact via a crafted regular expression, as demonstrated by
a JavaScript RegExp object encountered by Konqueror.
CVE-2015-8392
PCRE before 8.38 mishandles certain instances of the (?| substring, which
allows remote attackers to cause a denial of service (unintended recursion and
buffer overflow) or possibly have unspecified other impact via a crafted
regular expression, as demonstrated by a JavaScript RegExp object encountered
by Konqueror, a related issue to CVE-2015-8384 and CVE-2015-8395.
CVE-2015-8391
The pcre_compile function in pcre_compile.c in PCRE before 8.38 mishandles
certain [: nesting, which allows remote attackers to cause a denial of service
(CPU consumption) or possibly have unspecified other impact via a crafted
regular expression, as demonstrated by a JavaScript RegExp object encountered
by Konqueror.
CVE-2015-8390
PCRE before 8.38 mishandles the [: and \\ substrings in character classes,
which allows remote attackers to cause a denial of service (uninitialized
memory read) or possibly have unspecified other impact via a crafted regular
expression, as demonstrated by a JavaScript RegExp object encountered by
Konqueror.
CVE-2015-8389
PCRE before 8.38 mishandles the /(?:|a|){100}x/ pattern and related patterns,
which allows remote attackers to cause a denial of service (infinite
recursion) or possibly have unspecified other impact via a crafted regular
expression, as demonstrated by a JavaScript RegExp object encountered by
Konqueror.
CVE-2015-8388
PCRE before 8.38 mishandles the /(?=di(?<=(?1))|(?=(.))))/ pattern and related
patterns with an unmatched closing parenthesis, which allows remote attackers
to cause a denial of service (buffer overflow) or possibly have unspecified
other impact via a crafted regular expression, as demonstrated by a JavaScript
RegExp object encountered by Konqueror.
CVE-2015-8387
PCRE before 8.38 mishandles (?123) subroutine calls and related subroutine
calls, which allows remote attackers to cause a denial of service (integer
overflow) or possibly have unspecified other impact via a crafted regular
expression, as demonstrated by a JavaScript RegExp object encountered by
Konqueror.
CVE-2015-8386
PCRE before 8.38 mishandles the interaction of lookbehind assertions and
mutually recursive subpatterns, which allows remote attackers to cause a
denial of service (buffer overflow) or possibly have unspecified other impact
via a crafted regular expression, as demonstrated by a JavaScript RegExp
object encountered by Konqueror.
CVE-2015-8385
PCRE before 8.38 mishandles the /(?|(\k'Pm')|(?'Pm'))/ pattern and related
patterns with certain forward references, which allows remote attackers to
cause a denial of service (buffer overflow) or possibly have unspecified other
impact via a crafted regular expression, as demonstrated by a JavaScript
RegExp object encountered by Konqueror.
CVE-2015-8384
PCRE before 8.38 mishandles the /(?J)(?'d'(?'d'\g{d}))/ pattern and related
patterns with certain recursive back references, which allows remote attackers
to cause a denial of service (buffer overflow) or possibly have unspecified
other impact via a crafted regular expression, as demonstrated by a JavaScript
RegExp object encountered by Konqueror, a related issue to CVE-2015-8392 and
CVE-2015-8395.
CVE-2015-8383
PCRE before 8.38 mishandles certain repeated conditional groups, which allows
remote attackers to cause a denial of service (buffer overflow) or possibly
have unspecified other impact via a crafted regular expression, as
demonstrated by a JavaScript RegExp object encountered by Konqueror.
CVE-2015-8382
The match function in pcre_exec.c in PCRE before 8.37 mishandles the
/(?:((abcd))|(((?:(?:(?:(?:abc|(?:abcdef))))b)abcdefghi)abc)|((*ACCEPT)))/
pattern and related patterns involving (*ACCEPT), which allows remote
attackers to obtain sensitive information from process memory or cause a
denial of service (partially initialized memory and application crash) via a
crafted regular expression, as demonstrated by a JavaScript RegExp object
encountered by Konqueror, aka ZDI-CAN-2547.
CVE-2015-8381
The compile_regex function in pcre_compile.c in PCRE before 8.38 and
pcre2_compile.c in PCRE2 before 10.2x mishandles the
/(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R'))))/ and
/(?J:(?|(:(?|(?'R')(\z(?|(?'R')(\k'R')|((?'R')))k'R')|((?'R')))H'Ak'Rf)|s(?'R')))/
patterns, and related patterns with certain group references, which allows
remote attackers to cause a denial of service (heap-based buffer overflow) or
possibly have unspecified other impact via a crafted regular expression, as
demonstrated by a JavaScript RegExp object encountered by Konqueror.
CVE-2015-8380
The pcre_exec function in pcre_exec.c in PCRE before 8.38 mishandles a //
pattern with a \01 string, which allows remote attackers to cause a denial of
service (heap-based buffer overflow) or possibly have unspecified other impact
via a crafted regular expression, as demonstrated by a JavaScript RegExp
object encountered by Konqueror.
CVE-2015-2328
PCRE before 8.36 mishandles the /((?(R)a|(?1)))+/ pattern and related patterns
with certain recursion, which allows remote attackers to cause a denial of
service (segmentation fault) or possibly have unspecified other impact via a
crafted regular expression, as demonstrated by a JavaScript RegExp object
encountered by Konqueror.
CVE-2015-2327
PCRE before 8.36 mishandles the /(((a\2)|(a*)\g<-1>))*/ pattern and related
patterns with certain internal recursive back references, which allows remote
attackers to cause a denial of service (segmentation fault) or possibly have
unspecified other impact via a crafted regular expression, as demonstrated by
a JavaScript RegExp object encountered by Konqueror.
CVE-2015-3217 - reserved
PCRE Library Call Stack Overflow Vulnerability in match()
Impact
These vulnerabilities may allow remote attackers to cause a denial-of-service
(DoS) or possibly have unspecified other impact via a crafted regular
expression.
Important: If BIG-IP ASM is not provisioned, the attack vector is a local only
user.
Security Issue Status
F5 Product Development has assigned ID 564111 (BIG-IP), IDs 566040 and 566044
(BIG-IQ & Enterprise Manager), and ID 541509 (ARX) to this vulnerability, and
has evaluated the currently supported releases for potential vulnerability.
To determine if your release is known to be vulnerable, the components or
features that are affected by the vulnerability, and for information about
releases or hotfixes that address the vulnerability, refer to the following
table:
Product Versions known to be vulnerable Versions known to be not vulnerable Severity Vulnerable component or feature
BIG-IP LTM 12.0.0 None Low PCRE library
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP AAM 12.0.0 None Low PCRE library
11.4.0 - 11.6.0
BIG-IP AFM 12.0.0 None Low PCRE library
11.3.0 - 11.6.0
BIG-IP Analytics 12.0.0 None Low PCRE library
11.0.0 - 11.6.0
BIG-IP APM 12.0.0 None Low PCRE library
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP ASM 12.0.0 None Medium PCRE library
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP DNS 12.0.0 None Low PCRE library
BIG-IP Edge Gateway 11.0.0 - 11.3.0 None Low PCRE library
10.1.0 - 10.2.4
BIG-IP GTM 11.0.0 - 11.6.0 None Low PCRE library
10.1.0 - 10.2.4
BIG-IP Link Controller 12.0.0 None Low PCRE library
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP PEM 12.0.0 None Low PCRE library
11.3.0 - 11.6.0
BIG-IP PSM 11.0.0 - 11.4.1 None Low PCRE library
10.1.0 - 10.2.4
BIG-IP WebAccelerator 11.0.0 - 11.3.0 None Low PCRE library
10.1.0 - 10.2.4
BIG-IP WOM 11.0.0 - 11.3.0 None Low PCRE library
10.1.0 - 10.2.4
ARX 6.0.0 - 6.4.0 None Low PCRE library
Enterprise Manager 3.0.0 - 3.1.1 None Low PCRE library
FirePass None 7.0.0 Not vulnerable None
6.0.0 - 6.1.0
BIG-IQ Cloud 4.0.0 - 4.5.0 None Low PCRE library
BIG-IQ Device 4.2.0 - 4.5.0 None Low PCRE library
BIG-IQ Security 4.0.0 - 4.5.0 None Low PCRE library
BIG-IQ ADC 4.5.0 None Low PCRE library
BIG-IQ Centralized Management 4.6.0 None Low PCRE library
BIG-IQ Cloud and Orchestration 1.0.0 None Low PCRE library
LineRate 2.5.0 - 2.6.1 None Low PCRE library
F5 WebSafe None 1.0.0 Not vulnerable None
Traffix SDC 4.0.0 - 4.4.0 None Low PCRE library
3.3.2 - 3.5.1
Vulnerability Recommended Actions
If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Versions known to be not vulnerable column. If the table lists only an
older version than what you are currently running, or does not list a
non-vulnerable version, then no upgrade candidate currently exists.
F5 responds to vulnerabilities in accordance with the Severity values
published in the previous table. The Severity values and other security
vulnerability parameters are defined in SOL4602: Overview of the F5 security
vulnerability response policy.
Supplemental Information
SOL9970: Subscribing to email notifications regarding F5 products
SOL9957: Creating a custom RSS feed to view new and updated documents
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