RHSA-2016:2750

http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup

[oss-security] 20151128 Re: Heap Overflow in PCRE

76187

RHSA-2016:1132

https://bto.bluecoat.com/security-advisory/sa128

https://bugs.exim.org/show_bug.cgi?id=1667

https://bugs.exim.org/show_bug.cgi?id=1672

GLSA-201607-02

This update for pcre to version 8.39 (bsc#972127) fixes several issues. If you use pcre extensively please be aware that this is an update to a new version. Please make sure that your software works with the updated version. This version fixes a number of vulnerabilities that affect pcre and applications using the libary when accepting untrusted input as regular expressions or as part thereof. Remote attackers could have caused the application to crash, disclose information or potentially execute arbitrary code. These security issues were fixed :

  - CVE-2014-8964: Heap-based buffer overflow in PCRE     allowed remote attackers to cause a denial of service     (crash) or have other unspecified impact via a crafted     regular expression, related to an assertion that allows     zero repeats (bsc#906574).

  - CVE-2015-2325: Heap buffer overflow in compile_branch()     (bsc#924960).

  - CVE-2015-3210: Heap buffer overflow in pcre_compile2() /     compile_regex() (bsc#933288)

  - CVE-2015-3217: PCRE Library Call Stack Overflow     Vulnerability in match() (bsc#933878).

  - CVE-2015-5073: Library Heap Overflow Vulnerability in     find_fixedlength() (bsc#936227).

  - bsc#942865: heap overflow in compile_regex()

  - CVE-2015-8380: The pcre_exec function in pcre_exec.c     mishandled a // pattern with a \01 string, which allowed     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 (bsc#957566).

  - CVE-2015-2327: PCRE mishandled certain patterns with     internal recursive back references, which allowed 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     (bsc#957567).

  - bsc#957598: Various security issues

  - CVE-2015-8381: Heap Overflow in compile_regex()     (bsc#957598).

  - CVE-2015-8382: Regular Expression Uninitialized Pointer     Information Disclosure Vulnerability     (ZDI-CAN-2547)(bsc#957598).

  - CVE-2015-8383: Buffer overflow caused by repeated     conditional group(bsc#957598).

  - CVE-2015-8384: Buffer overflow caused by recursive back     reference by name within certain group(bsc#957598).

  - CVE-2015-8385: Buffer overflow caused by forward     reference by name to certain group(bsc#957598).

  - CVE-2015-8386: Buffer overflow caused by lookbehind     assertion(bsc#957598).

  - CVE-2015-8387: Integer overflow in subroutine     calls(bsc#957598).

  - CVE-2015-8388: Buffer overflow caused by certain     patterns with an unmatched closing     parenthesis(bsc#957598).

  - CVE-2015-8389: Infinite recursion in JIT compiler when     processing certain patterns(bsc#957598).

  - CVE-2015-8390: Reading from uninitialized memory when     processing certain patterns(bsc#957598).

  - CVE-2015-8391: Some pathological patterns causes     pcre_compile() to run for a very long time(bsc#957598).

  - CVE-2015-8392: Buffer overflow caused by certain     patterns with duplicated named groups(bsc#957598).

  - CVE-2015-8393: Information leak when running pcgrep -q     on crafted binary(bsc#957598).

  - CVE-2015-8394: Integer overflow caused by missing check     for certain conditions(bsc#957598).

  - CVE-2015-8395: Buffer overflow caused by certain     references(bsc#957598).

  - CVE-2015-2328: PCRE mishandled the /((?(R)a|(?1)))+/     pattern and related patterns with certain recursion,     which allowed remote attackers to cause a denial of     service (segmentation fault) or possibly have     unspecified other impact via a crafted regular     expression (bsc#957600).

  - CVE-2016-1283: The pcre_compile2 function in     pcre_compile.c in PCRE mishandled certain patterns with     named subgroups, which allowed remote attackers to cause     a denial of service (heap-based buffer overflow) or     possibly have unspecified other impact via a crafted     regular expression (bsc#960837).

  - CVE-2016-3191: The compile_branch function in     pcre_compile.c in pcre2_compile.c mishandled patterns     containing an (*ACCEPT) substring in conjunction with     nested parentheses, which allowed remote attackers to     execute arbitrary code or cause a denial of service     (stack-based buffer overflow) via a crafted regular     expression (bsc#971741).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for pcre to version 8.39 (bsc#972127) fixes several issues.

If you use pcre extensively please be aware that this is an update to a new version. Please make sure that your software works with the updated version.

This version fixes a number of vulnerabilities that affect pcre and applications using the libary when accepting untrusted input as regular expressions or as part thereof. Remote attackers could have caused the application to crash, disclose information or potentially execute arbitrary code. These security issues were fixed :

  - CVE-2014-8964: Heap-based buffer overflow in PCRE     allowed remote attackers to cause a denial of service     (crash) or have other unspecified impact via a crafted     regular expression, related to an assertion that allows     zero repeats (bsc#906574).

  - CVE-2015-2325: Heap buffer overflow in compile_branch()     (bsc#924960).

  - CVE-2015-3210: Heap buffer overflow in pcre_compile2() /     compile_regex() (bsc#933288)

  - CVE-2015-3217: PCRE Library Call Stack Overflow     Vulnerability in match() (bsc#933878).

  - CVE-2015-5073: Library Heap Overflow Vulnerability in     find_fixedlength() (bsc#936227).

  - bsc#942865: heap overflow in compile_regex()

  - CVE-2015-8380: The pcre_exec function in pcre_exec.c     mishandled a // pattern with a \01 string, which allowed     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 (bsc#957566).

  - CVE-2015-2327: PCRE mishandled certain patterns with     internal recursive back references, which allowed 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     (bsc#957567).

  - bsc#957598: Various security issues 

  - CVE-2015-8381: Heap Overflow in compile_regex()     (bsc#957598).

  - CVE-2015-8382: Regular Expression Uninitialized Pointer     Information Disclosure Vulnerability     (ZDI-CAN-2547)(bsc#957598).

  - CVE-2015-8383: Buffer overflow caused by repeated     conditional group(bsc#957598).

  - CVE-2015-8384: Buffer overflow caused by recursive back     reference by name within certain group(bsc#957598).

  - CVE-2015-8385: Buffer overflow caused by forward     reference by name to certain group(bsc#957598).

  - CVE-2015-8386: Buffer overflow caused by lookbehind     assertion(bsc#957598).

  - CVE-2015-8387: Integer overflow in subroutine     calls(bsc#957598).

  - CVE-2015-8388: Buffer overflow caused by certain     patterns with an unmatched closing     parenthesis(bsc#957598).

  - CVE-2015-8389: Infinite recursion in JIT compiler when     processing certain patterns(bsc#957598).

  - CVE-2015-8390: Reading from uninitialized memory when     processing certain patterns(bsc#957598).

  - CVE-2015-8391: Some pathological patterns causes     pcre_compile() to run for a very long time(bsc#957598).

  - CVE-2015-8392: Buffer overflow caused by certain     patterns with duplicated named groups(bsc#957598).

  - CVE-2015-8393: Information leak when running pcgrep -q     on crafted binary(bsc#957598).

  - CVE-2015-8394: Integer overflow caused by missing check     for certain conditions(bsc#957598).

  - CVE-2015-8395: Buffer overflow caused by certain     references(bsc#957598).

  - CVE-2015-2328: PCRE mishandled the /((?(R)a|(?1)))+/     pattern and related patterns with certain recursion,     which allowed remote attackers to cause a denial of     service (segmentation fault) or possibly have     unspecified other impact via a crafted regular     expression (bsc#957600).

  - CVE-2016-1283: The pcre_compile2 function in     pcre_compile.c in PCRE mishandled certain patterns with     named subgroups, which allowed remote attackers to cause     a denial of service (heap-based buffer overflow) or     possibly have unspecified other impact via a crafted     regular expression (bsc#960837).

  - CVE-2016-3191: The compile_branch function in     pcre_compile.c in pcre2_compile.c mishandled patterns     containing an (*ACCEPT) substring in conjunction with     nested parentheses, which allowed remote attackers to     execute arbitrary code or cause a denial of service     (stack-based buffer overflow) via a crafted regular     expression (bsc#971741).

These non-security issues were fixed :

  - JIT compiler improvements

  - performance improvements

  - The Unicode data tables have been updated to Unicode     7.0.0.

This update was imported from the SUSE:SLE-12:Update update project.

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 PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty matches, which might allow remote attackers to cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by /^(?:(?(1)\\.|([^\\\\W_])?)+)+$/.

The remote host is affected by the vulnerability described in GLSA-201607-02 (libpcre: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in libpcre. Please review       the CVE identifiers referenced below for details.
  Impact :

    An attacker can possibly execute arbitrary code or create a Denial of       Service condition.
  Workaround :

    There is no known workaround at this time.

It was discovered that PCRE incorrectly handled certain regular expressions. A remote attacker could use this issue to cause applications using PCRE to crash, resulting in a denial of service, or possibly execute arbitrary code.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
95915	SUSE SLED12 / SLES12 Security Update : pcre (SUSE-SU-2016:3161-1)	Nessus	SuSE Local Security Checks	high
95754	openSUSE Security Update : pcre (openSUSE-2016-1448)	Nessus	SuSE Local Security Checks	high
95534	SUSE SLED12 / SLES12 Security Update : pcre (SUSE-SU-2016:2971-1)	Nessus	SuSE Local Security Checks	high
92667	F5 Networks BIG-IP : Multiple PCRE vulnerabilities (K20225390)	Nessus	F5 Networks Local Security Checks	high
91983	GLSA-201607-02 : libpcre: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
90306	Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : pcre3 vulnerabilities (USN-2943-1)	Nessus	Ubuntu Local Security Checks	high

CVE-2015-8381

HIGH

Description

References

Details

Risk Information

CVSS v2.0

Vulnerable Software

Configuration 1

Tenable Plugins

high

high

high

high

high

high