Libmspack
CVE-2018-14681
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, write limits
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required. |
| Exploit ScenarioDerived | A remote attacker could write data beyond allocated buffer boundaries leading to code execution or crashes by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
An issue was discovered in kwajd_read_headers in mspack/kwajd.c in libmspack before 0.7alpha. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Write vulnerability could allow attackers to write data beyond allocated buffer boundaries leading to code execution or crashes.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. 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. Affected products include: Cabextract Libmspack, Cabextract Project Cabextract, Canonical Ubuntu Linux, Debian Debian Linux, Redhat Ansible Tower. Version information: before 0.7.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.
Affected Products (CPE)NVD
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
libmspack 0.9.1alpha is affected by: Buffer Overflow. Rated medium severity (CVSS 5.5), this vulnerability is no authent
chmextract.c in the chmextract sample program, as distributed with libmspack before 0.8alpha, does not protect against a
Integer overflow in the qtmd_decompress function in libmspack 0.4 allows remote attackers to cause a denial of service (
An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. Rated high severity (CVSS 8.8), this vulnerabilit
Off-by-one error in the lzxd_decompress function in lzxd.c in libmspack before 0.5 allows remote attackers to cause a de
Off-by-one error in the inflate function in mszipd.c in libmspack before 0.5 allows remote attackers to cause a denial o
The cabd_extract function in cabd.c in libmspack before 0.5 does not properly maintain decompression callbacks in certai
The chmd_read_headers function in chmd.c in libmspack before 0.5 does not validate name lengths, which allows remote att
Multiple integer overflows in the search_chunk function in chmd.c in libmspack before 0.5 allow remote attackers to caus
The chmd_init_decomp function in chmd.c in libmspack before 0.5 does not properly validate the reset interval, which all
chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second
Exploit-DB