libmspack up to 0.4 CHM File chmd.c numeric error

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

A vulnerability was found in libmspack up to 0.4. It has been rated as critical. This issue affects some unknown processing of the file chmd.c of the component CHM File Handler. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Off-by-one error in the READ_ENCINT macro in chmd.c in libmspack before 0.5 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted CHM file.

The weakness was released 06/11/2015 by Jakub Wilk as confirmed mailinglist post (oss-sec). It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2015-4472 since 06/10/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 84315 (GLSA-201506-01 : Adobe Flash Player: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168364 (SUSE Enterprise Linux Security update for libmspack (SUSE-SU-2016:0011-1)).

Upgrading to version 0.5 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (103803) and Tenable (84315). Entries connected to this vulnerability are available at 75795, 75845, 75846 and 75847.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84315
Nessus Name: GLSA-201506-01 : Adobe Flash Player: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 18627
OpenVAS Name: Gentoo Linux Local Check: https://security.gentoo.org/glsa/201506-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: libmspack 0.5

Timelineinfo

02/04/2015 🔍
02/04/2015 +0 days 🔍
06/10/2015 +126 days 🔍
06/11/2015 +1 days 🔍
06/11/2015 +0 days 🔍
06/12/2015 +1 days 🔍
06/21/2015 +9 days 🔍
06/22/2015 +1 days 🔍
01/19/2016 +211 days 🔍
07/05/2018 +898 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: Jakub Wilk
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-4472 (🔍)
X-Force: 103803 - libmspack CHM buffer overflow
Vulnerability Center: 55747 - libmspack <0.5 Remote DoS or Unspecified Impact in CHM Decompression, Medium
SecurityFocus: 72490 - Libmspack 'mspack/chmd.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/12/2015 10:34
Updated: 07/05/2018 09:00
Changes: 06/12/2015 10:34 (71), 07/05/2018 09:00 (10)
Complete: 🔍

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