libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - pcre: inefficient posix character class syntax check (8.38/16) (CVE-2015-8391)

  - pcre: Integer overflow caused by missing check for certain conditions (8.38/31) (CVE-2015-8394)

  - 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-2015-2327)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5665-1 advisory.

    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. (CVE-2017-6004)

    It was discovered that PCRE incorrectly handled certain Unicode encoding. A remote attacker could use this     issue to cause applications using PCRE to crash, resulting in a denial of service. (CVE-2017-7186)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED12 / SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3652-1 advisory.

  - The compile_bracket_matchingpath function in pcre_jit_compile.c in PCRE through 8.x before revision 1680     (e.g., the PHP 7.1.1 bundled version) allows remote attackers to cause a denial of service (out-of-bounds     read and application crash) via a crafted regular expression. (CVE-2017-6004)

  - libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service     (segmentation violation for read access, and application crash) by triggering an invalid Unicode property     lookup. (CVE-2017-7186)

  - The _pcre32_xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a     denial of service (invalid memory read) via a crafted file. (CVE-2017-7244)

  - Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40     allows remote attackers to cause a denial of service (WRITE of size 4) or possibly have unspecified other     impact via a crafted file. (CVE-2017-7245)

  - Stack-based buffer overflow in the pcre32_copy_substring function in pcre_get.c in libpcre1 in PCRE 8.40     allows remote attackers to cause a denial of service (WRITE of size 268) or possibly have unspecified     other impact via a crafted file. (CVE-2017-7246)

  - libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R     has more than one fixed quantifier, a related issue to CVE-2019-20454. (CVE-2019-20838)

  - libpcre in PCRE before 8.44 allows an integer overflow via a large number after a (?C substring.
    (CVE-2020-14155)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the version of the pcre packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow     remote attackers to cause a denial of service     (segmentation violation for read access, and     application crash) by triggering an invalid Unicode     property lookup.(CVE-2017-7186)

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

According to the version of the pcre packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow     remote attackers to cause a denial of service     (segmentation violation for read access, and     application crash) by triggering an invalid Unicode     property lookup.(CVE-2017-7186)

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

- update to 2.56.x

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

The remote host is affected by the vulnerability described in GLSA-201710-25 (PCRE: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in The PCRE Library.
      Please review the references below for details.
  Impact :

    A remote attacker could possibly cause a Denial of Service condition or       other unspecified impacts via a specially crafted file.
  Workaround :

    There is no known workaround at this time.

The remote host is affected by the vulnerability described in GLSA-201710-09 (PCRE2: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in PCRE2. Please review       the referenced CVE identifiers for details.
  Impact :

    A remote attacker could possibly execute arbitrary code with the       privileges of the process, cause a Denial of Service condition, or have       other unspecified impacts.
  Workaround :

    There is no known workaround at this time.

This release fixes a crash when finding a Unicode property for a character with a code point greater than 0x10ffff in UTF-32 library while UTF mode is disabled and JIT mode is enabled. It also fixes an incortect cast in UTF validation routine.

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

This release fixes a crash when finding a Unicode property for a character with a code point greater than 0x10ffff in UTF-32 library while UTF mode is disabled and JIT mde enabled. It also fixes a buffer overlflow in pcretest tool when copying a string in UTF-32 mode.

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

ID	Name	Product	Family	Severity
199957	RHEL 7 : pcre (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
196306	RHEL 7 : pcre (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	high
166014	Ubuntu 16.04 ESM : PCRE vulnerabilities (USN-5665-1)	Nessus	Ubuntu Local Security Checks	high
155134	SUSE SLED12 / SLES12 Security Update : pcre (SUSE-SU-2021:3652-1)	Nessus	SuSE Local Security Checks	high
128934	EulerOS Virtualization for ARM 64 3.0.2.0 : pcre (EulerOS-SA-2019-1931)	Nessus	Huawei Local Security Checks	high
128094	EulerOS 2.0 SP5 : pcre (EulerOS-SA-2019-1802)	Nessus	Huawei Local Security Checks	high
123111	EulerOS 2.0 SP3 : pcre (EulerOS-SA-2019-1098)	Nessus	Huawei Local Security Checks	high
120337	Fedora 28 : mingw-glib2 / mingw-glibmm24 (2018-3238d4da59)	Nessus	Fedora Local Security Checks	high
104068	GLSA-201710-25 : PCRE: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
103727	GLSA-201710-09 : PCRE2: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
101738	Fedora 26 : pcre2 (2017-e4c6ab648b)	Nessus	Fedora Local Security Checks	high
101579	Fedora 26 : pcre (2017-188135cba8)	Nessus	Fedora Local Security Checks	high
100073	Fedora 24 : pcre (2017-3b367c896f)	Nessus	Fedora Local Security Checks	high
99696	Fedora 24 : pcre2 (2017-2c4ddb3ca2)	Nessus	Fedora Local Security Checks	high
99645	Fedora 25 : pcre (2017-b4d4a46af6)	Nessus	Fedora Local Security Checks	high
99612	Fedora 25 : pcre2 (2017-9c6430c2e2)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2017-7186

high

Tenable Plugins

critical

high

high

high

high

high

high

high

high

critical

high

high

high

high

high

high