Dropbox Lepton 1.0 JPEG File lepton/jpgcoder.cc write_ujpg out-of-bounds

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Dropbox Lepton 1.0. Affected by this issue is the function write_ujpg of the file lepton/jpgcoder.cc of the component JPEG File Handler. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2016-6238. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Dropbox Lepton 1.0 (Cloud Software). It has been classified as problematic. Affected is the function write_ujpg of the file lepton/jpgcoder.cc of the component JPEG File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

The write_ujpg function in lepton/jpgcoder.cc in Dropbox lepton 1.0 allows remote attackers to cause denial of service (out-of-bounds read) via a crafted jpeg file.

The bug was discovered 07/17/2016. The weakness was shared 02/02/2017 (Website). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2016-6238 since 07/17/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 200 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-96500, VDB-96501, VDB-96502 and VDB-96503 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/17/2016 🔍
07/17/2016 +0 days 🔍
02/02/2017 +200 days 🔍
02/02/2017 +0 days 🔍
02/03/2017 +1 days 🔍
11/11/2022 +2107 days 🔍

Sourcesinfo

Advisory: 26
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6238 (🔍)
GCVE (CVE): GCVE-0-2016-6238
GCVE (VulDB): GCVE-100-96504
OSVDB: - CVE-2016-6238 - Dropbox - lepton - Out-of-Bounds Read Issue

See also: 🔍

Entryinfo

Created: 02/03/2017 10:02
Updated: 11/11/2022 13:11
Changes: 02/03/2017 10:02 (58), 08/10/2020 09:10 (4), 11/11/2022 13:11 (3)
Complete: 🔍
Cache ID: 216:C49:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!