libmspack up to 0.4 CHM File chmd.c chmd_read_headers memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in libmspack up to 0.4. This vulnerability affects the function chmd_read_headers of the file chmd.c of the component CHM File Handler. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2015-4469. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in libmspack up to 0.4 and classified as critical. Affected by this issue is the function chmd_read_headers of the file chmd.c of the component CHM File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

The chmd_read_headers function in chmd.c in libmspack before 0.5 does not validate name lengths, which allows remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted CHM file.

The weakness was presented 06/11/2015 by Jakub Wilk as confirmed mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2015-4469 since 06/10/2015. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 87276 (SUSE SLED11 / SLES11 Security Update : libmspack (SUSE-SU-2015:2215-1)), 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 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 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (103800), Tenable (87276), SecurityFocus (BID 72486†) and Vulnerability Center (SBV-55751†). See VDB-75845, VDB-75846, VDB-75847 and VDB-75849 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87276
Nessus Name: SUSE SLED11 / SLES11 Security Update : libmspack (SUSE-SU-2015:2215-1)
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: 🔍

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 🔍
12/07/2015 +178 days 🔍
12/09/2015 +2 days 🔍
01/19/2016 +41 days 🔍
07/05/2018 +898 days 🔍

Sourcesinfo

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

CVE: CVE-2015-4469 (🔍)
GCVE (CVE): GCVE-0-2015-4469
GCVE (VulDB): GCVE-100-75848
X-Force: 103800 - libmspack CHM file buffer overflow
SecurityFocus: 72486 - Libmspack Out Of Bounds Read Multiple Memory Corruption Vulnerabilities
Vulnerability Center: 55751 - libmspack <0.5 Remote DoS due to Improper Filename Length via CHM File, Medium

See also: 🔍

Entryinfo

Created: 06/12/2015 10:34
Updated: 07/05/2018 09:01
Changes: 06/12/2015 10:34 (64), 07/05/2018 09:01 (15)
Complete: 🔍
Cache ID: 216:FBA:103

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