There is a buffer overflow in Liblouis 3.2.0, triggered in the function _lou_showString() in utils.c, that will lead to a remote denial of service attack.

Security fix for CVE-2017-13738 CVE-2017-13739 CVE-2017-13740 CVE-2017-13741 CVE-2017-13742 CVE-2017-13743 CVE-2017-13744

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.

According to the versions of the liblouis packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Multiple flaws were found in the processing of     translation tables in liblouis. An attacker could crash     or potentially execute arbitrary code using malicious     translation tables. (CVE-2014-8184, CVE-2017-13738,     CVE-2017-13740, CVE-2017-13741, CVE-2017-13742,     CVE-2017-13743, CVE-2017-13744)

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.

An update for liblouis is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Liblouis is an open source braille translator and back-translator named in honor of Louis Braille. It features support for computer and literary braille, supports contracted and uncontracted translation for many languages and has support for hyphenation. New languages can easily be added through tables that support a rule or dictionary based approach. Liblouis also supports math braille (Nemeth and Marburg).

Security Fix(es) :

* Multiple flaws were found in the processing of translation tables in liblouis. An attacker could crash or potentially execute arbitrary code using malicious translation tables. (CVE-2014-8184, CVE-2017-13738, CVE-2017-13740, CVE-2017-13741, CVE-2017-13742, CVE-2017-13743, CVE-2017-13744)

The CVE-2014-8184 issue was discovered by Raphael Sanchez Prudencio (Red Hat).

Security Fix(es) :

  - Multiple flaws were found in the processing of     translation tables in liblouis. An attacker could crash     or potentially execute arbitrary code using malicious     translation tables. (CVE-2014-8184, CVE-2017-13738,     CVE-2017-13740, CVE-2017-13741, CVE-2017-13742,     CVE-2017-13743, CVE-2017-13744)

From Red Hat Security Advisory 2017:3111 :

An update for liblouis is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Liblouis is an open source braille translator and back-translator named in honor of Louis Braille. It features support for computer and literary braille, supports contracted and uncontracted translation for many languages and has support for hyphenation. New languages can easily be added through tables that support a rule or dictionary based approach. Liblouis also supports math braille (Nemeth and Marburg).

Security Fix(es) :

* Multiple flaws were found in the processing of translation tables in liblouis. An attacker could crash or potentially execute arbitrary code using malicious translation tables. (CVE-2014-8184, CVE-2017-13738, CVE-2017-13740, CVE-2017-13741, CVE-2017-13742, CVE-2017-13743, CVE-2017-13744)

The CVE-2014-8184 issue was discovered by Raphael Sanchez Prudencio (Red Hat).

This update for liblouis fixes several issues.

These security issues were fixed :

  - CVE-2017-13738: Prevent illegal address access in the
    _lou_getALine function that allowed to cause remote DoS     (bsc#1056105).

  - CVE-2017-13739: Prevent heap-based buffer overflow in     the function resolveSubtable() that could have caused     DoS or remote code execution (bsc#1056101).

  - CVE-2017-13740: Prevent stack-based buffer overflow in     the function parseChars() that could have caused DoS or     possibly unspecified other impact (bsc#1056097) 

  - CVE-2017-13741: Prevent use-after-free in function     compileBrailleIndicator() that allowed to cause remote     DoS (bsc#1056095).

  - CVE_2017-13742: Prevent stack-based buffer overflow in     function includeFile that allowed to cause remote DoS     (bsc#1056093).

  - CVE-2017-13743: Prevent buffer overflow triggered in the     function _lou_showString() that allowed to cause remote     DoS (bsc#1056090).

  - CVE-2017-13744: Prevent illegal address access in the     function _lou_getALine() that allowed to cause remote     DoS (bsc#1056088).

This update was imported from the SUSE:SLE-12-SP2:Update update project.

This update for liblouis fixes several issues. These security issues were fixed :

  - CVE-2017-13739: Prevent heap-based buffer overflow in     the function resolveSubtable() that could have caused     DoS or remote code execution (bsc#1056101)

  - CVE-2017-13740: Prevent stack-based buffer overflow in     the function parseChars() that could have caused DoS or     possibly unspecified other impact (bsc#1056097) ()

  - CVE-2017-13741: Prevent use-after-free in function     compileBrailleIndicator() that allowed to cause remote     DoS (bsc#1056095)

  - CVE_2017-13742: Prevent stack-based buffer overflow in     function includeFile that allowed to cause remote DoS     (bsc#1056093).

  - CVE-2017-13743: Prevent buffer overflow triggered in the     function _lou_showString() that allowed to cause remote     DoS (bsc#1056090)

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 liblouis fixes several issues. These security issues were fixed :

  - CVE-2017-13738: Prevent illegal address access in the
    _lou_getALine function that allowed to cause remote DoS     (bsc#1056105).

  - CVE-2017-13739: Prevent heap-based buffer overflow in     the function resolveSubtable() that could have caused     DoS or remote code execution (bsc#1056101).

  - CVE-2017-13740: Prevent stack-based buffer overflow in     the function parseChars() that could have caused DoS or     possibly unspecified other impact (bsc#1056097)

  - CVE-2017-13741: Prevent use-after-free in function     compileBrailleIndicator() that allowed to cause remote     DoS (bsc#1056095).

  - CVE_2017-13742: Prevent stack-based buffer overflow in     function includeFile that allowed to cause remote DoS     (bsc#1056093).

  - CVE-2017-13743: Prevent buffer overflow triggered in the     function _lou_showString() that allowed to cause remote     DoS (bsc#1056090).

  - CVE-2017-13744: Prevent illegal address access in the     function _lou_getALine() that allowed to cause remote     DoS (bsc#1056088).

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.

ID	Name	Product	Family	Severity
106012	Fedora 27 : liblouis (2017-f9f6398158)	Nessus	Fedora Local Security Checks	high
104909	EulerOS 2.0 SP2 : liblouis (EulerOS-SA-2017-1290)	Nessus	Huawei Local Security Checks	high
104908	EulerOS 2.0 SP1 : liblouis (EulerOS-SA-2017-1289)	Nessus	Huawei Local Security Checks	high
104592	Fedora 26 : liblouis (2017-2c9852dd05)	Nessus	Fedora Local Security Checks	high
104396	CentOS 7 : liblouis (CESA-2017:3111)	Nessus	CentOS Local Security Checks	high
104373	Scientific Linux Security Update : liblouis on SL7.x x86_64 (20171102)	Nessus	Scientific Linux Local Security Checks	high
104372	RHEL 7 : liblouis (RHSA-2017:3111)	Nessus	Red Hat Local Security Checks	high
104368	Oracle Linux 7 : liblouis (ELSA-2017-3111)	Nessus	Oracle Linux Local Security Checks	high
103660	openSUSE Security Update : liblouis (openSUSE-2017-1120)	Nessus	SuSE Local Security Checks	high
103564	SUSE SLES11 Security Update : liblouis (SUSE-SU-2017:2590-1)	Nessus	SuSE Local Security Checks	high
103528	SUSE SLED12 / SLES12 Security Update : liblouis (SUSE-SU-2017:2570-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2017-13743

medium

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

high