VDB-125850 · CVE-2018-18584 · RHSA-2019:2049

libmspack/cabextract CAB Block mspack/cab.h out-of-bounds write

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6.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in libmspack and cabextract and classified as critical. Affected is an unknown function of the file mspack/cab.h of the component CAB Block Handler. The manipulation results in out-of-bounds write. This vulnerability is known as CVE-2018-18584. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in libmspack and cabextract (the affected version is unknown). Affected is an unknown code of the file mspack/cab.h of the component CAB Block Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.

The bug was discovered 10/23/2018. The weakness was published 10/23/2018 (Website). The advisory is available at bugs.debian.org. This vulnerability is traded as CVE-2018-18584 since 10/22/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 118561 (openSUSE Security Update : libmspack (openSUSE-2018-1329)), 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 197299 (Ubuntu Security Notification for Libmspack Vulnerabilities (USN-3814-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118561). Similar entries are available at VDB-125851 and VDB-125852. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

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

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 118561
Nessus Name: openSUSE Security Update : libmspack (openSUSE-2018-1329)
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: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

10/22/2018 🔍
10/22/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/30/2018 +7 days 🔍
10/31/2018 +1 days 🔍
05/30/2023 +1672 days 🔍

Sourcesinfo

Advisory: RHSA-2019:2049
Status: Confirmed

CVE: CVE-2018-18584 (🔍)
GCVE (CVE): GCVE-0-2018-18584
GCVE (VulDB): GCVE-100-125850
See also: 🔍

Entryinfo

Created: 10/23/2018 13:28
Updated: 05/30/2023 15:02
Changes: 10/23/2018 13:28 (70), 04/06/2020 07:55 (2), 05/30/2023 15:02 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.