bl up to 2.2.0/3.0.0/4.0.2 consume Argument buffer over-read

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in bl up to 2.2.0/3.0.0/4.0.2. This issue affects the function consume. Executing a manipulation as part of Argument can lead to buffer over-read. This vulnerability is registered as CVE-2020-8244. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in bl up to 2.2.0/3.0.0/4.0.2. It has been declared as critical. This vulnerability affects the function consume. The manipulation as part of a Argument leads to a buffer over-read vulnerability. The CWE definition for the vulnerability is CWE-126. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A buffer over-read vulnerability exists in bl <4.0.3, <3.0.1 and <2.2.1 which could allow an attacker to supply user input (even typed) that if it ends up in consume() argument and can become negative, the BufferList state can be corrupted, tricking it into exposing uninitialized memory via regular .slice() calls.

The weakness was published 08/30/2020 (Website). The advisory is available at hackerone.com. This vulnerability was named CVE-2020-8244 since 01/28/2020. The attack can be initiated remotely. A single authentication is necessary for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 2.2.1, 3.0.1 or 4.0.3 eliminates this vulnerability.

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: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer over-read
CWE: CWE-126 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: bl 2.2.1/3.0.1/4.0.3

Timelineinfo

01/28/2020 🔍
08/30/2020 +215 days 🔍
08/31/2020 +1 days 🔍
08/31/2020 +0 days 🔍

Sourcesinfo

Advisory: hackerone.com
Status: Not defined

CVE: CVE-2020-8244 (🔍)
GCVE (CVE): GCVE-0-2020-8244
GCVE (VulDB): GCVE-100-160450

Entryinfo

Created: 08/31/2020 08:30
Updated: 08/31/2020 08:35
Changes: 08/31/2020 08:30 (39), 08/31/2020 08:35 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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