Liblouis 3.6.0 compileTranslationTable.c parseChars memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Liblouis 3.6.0. Affected by this issue is the function parseChars of the file compileTranslationTable.c. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2018-12085. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Liblouis 3.6.0. This affects the function parseChars of the file compileTranslationTable.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Liblouis 3.6.0 has a stack-based Buffer Overflow in the function parseChars in compileTranslationTable.c, a different vulnerability than CVE-2018-11440.

The bug was discovered 06/06/2018. The weakness was disclosed 06/09/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-12085 since 06/09/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 117662 (SUSE SLED12 / SLES12 Security Update : liblouis (SUSE-SU-2018:2780-1)), 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 171589 (OpenSUSE Security Update for liblouis (openSUSE-SU-2018:2819-1)).

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

The vulnerability is also documented in the databases at Tenable (117662) and SecurityFocus (BID 104324†). The entries VDB-118154, VDB-118204, VDB-118393 and VDB-118810 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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: 117662
Nessus Name: SUSE SLED12 / SLES12 Security Update : liblouis (SUSE-SU-2018:2780-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

05/23/2018 🔍
06/06/2018 +14 days 🔍
06/09/2018 +2 days 🔍
06/09/2018 +0 days 🔍
06/09/2018 +0 days 🔍
06/10/2018 +1 days 🔍
09/20/2018 +102 days 🔍
09/24/2018 +4 days 🔍
03/22/2023 +1640 days 🔍

Sourcesinfo

Product: github.com

Advisory: 595
Status: Confirmed

CVE: CVE-2018-12085 (🔍)
GCVE (CVE): GCVE-0-2018-12085
GCVE (VulDB): GCVE-100-119307
SecurityFocus: 104324 - Liblouis CVE-2018-11410 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/10/2018 08:39
Updated: 03/22/2023 10:45
Changes: 06/10/2018 08:39 (73), 02/17/2020 15:54 (5), 03/22/2023 10:39 (4), 03/22/2023 10:45 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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