libmspack up to 0.6 KWAJ File Header mspack/kwajd.c out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in libmspack up to 0.6 and classified as critical. Affected is an unknown function of the file mspack/kwajd.c of the component KWAJ File Header Handler. Executing a manipulation can lead to out-of-bounds write. This vulnerability appears as CVE-2018-14681. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in libmspack up to 0.6. It has been declared as critical. This vulnerability affects an unknown code of the file mspack/kwajd.c of the component KWAJ File Header Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in kwajd_read_headers in mspack/kwajd.c in libmspack before 0.7alpha. Bad KWAJ file header extensions could cause a one or two byte overwrite.

The bug was discovered 10/26/2017. The weakness was presented 07/28/2018 (Website). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2018-14681 since 07/28/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 275 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111521 (Debian DSA-4260-1 : libmspack - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171684 (SUSE Enterprise Linux Security Update for clamav (SUSE-SU-2018:3441-1)).

Upgrading to version 0.7alpha eliminates this vulnerability. A possible mitigation has been published 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111521). See VDB-122306, VDB-122307, VDB-122309 and VDB-125323 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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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: 🔍
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: 🔍

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Nessus ID: 111521
Nessus Name: Debian DSA-4260-1 : libmspack - security update
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: 🔍

Upgrade: libmspack 0.7alpha
Patch: github.com

Timelineinfo

10/26/2017 🔍
07/28/2018 +274 days 🔍
07/28/2018 +0 days 🔍
07/28/2018 +0 days 🔍
07/29/2018 +1 days 🔍
08/02/2018 +4 days 🔍
08/03/2018 +1 days 🔍
04/27/2023 +1728 days 🔍

Sourcesinfo

Advisory: RHSA-2018:3327
Status: Confirmed

CVE: CVE-2018-14681 (🔍)
GCVE (CVE): GCVE-0-2018-14681
GCVE (VulDB): GCVE-100-122308

OVAL: 🔍

SecurityTracker: 1041410

See also: 🔍

Entryinfo

Created: 07/29/2018 12:19
Updated: 04/27/2023 15:53
Changes: 07/29/2018 12:19 (74), 03/11/2020 08:41 (2), 04/27/2023 15:53 (6)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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