libjpeg linebuffer.cpp LineBuffer::FetchRegion heap-based overflow

HistoryDiffrelatejsonxmlCTI

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.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in libjpeg. This vulnerability affects the function LineBuffer::FetchRegion of the file linebuffer.cpp. Performing a manipulation results in heap-based overflow. This vulnerability is identified as CVE-2021-39518. There is not any exploit available.

Detailsinfo

A vulnerability was found in libjpeg (version now known). It has been classified as critical. This affects the function LineBuffer::FetchRegion of the file linebuffer.cpp. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 09/21/2021 as 35. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-39518 since 08/23/2021. Technical details are known, but no exploit is available.

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

libjpeg

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2021 🔍
09/21/2021 +29 days 🔍
09/21/2021 +0 days 🔍
09/29/2021 +8 days 🔍

Sourcesinfo

Advisory: 35
Status: Confirmed

CVE: CVE-2021-39518 (🔍)
GCVE (CVE): GCVE-0-2021-39518
GCVE (VulDB): GCVE-100-183021

Entryinfo

Created: 09/21/2021 09:32
Updated: 09/29/2021 20:35
Changes: 09/21/2021 09:32 (37), 09/29/2021 20:27 (1), 09/29/2021 20:35 (18)
Complete: 🔍
Cache ID: 216::103