Liblouis utils.c _lou_showString memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Liblouis 3.2.0. The impacted element is the function _lou_showString of the file utils.c. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2017-13743. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Liblouis 3.2.0. It has been declared as critical. Affected by this vulnerability is the function _lou_showString of the file utils.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 08/29/2017. The weakness was disclosed 08/29/2017 (Website). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-2017-13743 since 08/29/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 103528 (SUSE SLED12 / SLES12 Security Update : liblouis (SUSE-SU-2017:2570-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170411 (OpenSUSE Security Update for liblouis (openSUSE-SU-2017:2639-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103528) and SecurityFocus (BID 100607†). The entries VDB-105932, VDB-105933, VDB-105934 and VDB-105935 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103528
Nessus Name: SUSE SLED12 / SLES12 Security Update : liblouis (SUSE-SU-2017:2570-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64337
OpenVAS Name: CentOS Update for liblouis CESA-2017:3111 centos7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

08/29/2017 🔍
08/29/2017 +0 days 🔍
08/29/2017 +0 days 🔍
08/29/2017 +0 days 🔍
08/29/2017 +0 days 🔍
08/30/2017 +1 days 🔍
09/26/2017 +27 days 🔍
09/28/2017 +2 days 🔍
12/27/2022 +1916 days 🔍

Sourcesinfo

Advisory: RHSA-2017:3111⛔
Status: Not defined

CVE: CVE-2017-13743 (🔍)
GCVE (CVE): GCVE-0-2017-13743
GCVE (VulDB): GCVE-100-105937
SecurityFocus: 100607 - Liblouis Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 08/30/2017 08:56
Updated: 12/27/2022 08:49
Changes: 08/30/2017 08:56 (67), 11/11/2019 17:57 (11), 12/27/2022 08:49 (4)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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