Lepton
CVE-2016-6237
MEDIUM
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 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. EPSS exploitation probability: 0.21%. |
| Exploit ScenarioDerived | A local attacker with access to the system could write data beyond allocated buffer boundaries leading to code execution or crashes. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
The build_huffcodes function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause denial of service (out-of-bounds write) via a crafted jpeg file. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity.
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
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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. The build_huffcodes function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause denial of service (out-of-bounds write) via a crafted jpeg file. Affected products include: Lepton Project Lepton.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
The build_huffcodes function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause denial of service (out-of-bounds write) via a crafted jpeg file.
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.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
Dropbox Lepton v1.2.1-185-g2a08b77 was discovered to contain a heap-buffer-overflow in the function aligned_dealloc():sr
SQL injection vulnerability in modules/news/rss.php in LEPTON before 1.1.4 allows remote attackers to execute arbitrary
Directory traversal vulnerability in account/preferences.php in LEPTON before 1.1.4 allows remote attackers to include a
The allocate_channel_framebuffer function in uncompressed_components.hh in Dropbox Lepton 1.2.1 allows remote attackers
A loop with an unreachable exit condition can be triggered by passing a crafted JPEG file to the Lepton image compressio
An issue was discovered in Dropbox Lepton 1.2.1. Rated medium severity (CVSS 5.5), this vulnerability is no authenticati
Multiple cross-site scripting (XSS) vulnerabilities in LEPTON 1.1.3 and other versions before 1.1.4 allow remote attacke
The write_ujpg function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause denial of service (
The setup_imginfo_jpg function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause a denial of
The setup_imginfo_jpg function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause a denial of
The process_file function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause a denial of servi
Dropbox Lepton 1.2.1 allows DoS (SEGV and application crash) via a malformed lepton file because the code does not ensur
Exploit-DB