Bleach up to 2.1.2 Attribute URI input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Bleach up to 2.1.2 and classified as critical. This affects an unknown function of the component Attribute Handler. Such manipulation as part of URI leads to input validation. This vulnerability is listed as CVE-2018-7753. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Bleach up to 2.1.2 and classified as critical. Affected by this issue is an unknown code of the component Attribute Handler. The manipulation as part of a URI leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.

The bug was discovered 03/07/2018. The weakness was presented 03/07/2018 (Website). The advisory is shared for download at bugs.debian.org. This vulnerability is handled as CVE-2018-7753 since 03/07/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 120643 (Fedora 28 : python-bleach (2018-994424b810)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (120643). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Input validation
CWE: CWE-20
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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Nessus ID: 120643
Nessus Name: Fedora 28 : python-bleach (2018-994424b810)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860485
OpenVAS Name: Fedora Update for python-bleach FEDORA-2018-e38f759144
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: github.com
Patch: github.com

Timelineinfo

03/07/2018 🔍
03/07/2018 +0 days 🔍
03/07/2018 +0 days 🔍
03/07/2018 +0 days 🔍
03/08/2018 +1 days 🔍
03/30/2018 +22 days 🔍
01/03/2019 +279 days 🔍
02/17/2023 +1506 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-994424b810
Status: Not defined

CVE: CVE-2018-7753 (🔍)
GCVE (CVE): GCVE-0-2018-7753
GCVE (VulDB): GCVE-100-114188

Entryinfo

Created: 03/08/2018 07:53
Updated: 02/17/2023 10:51
Changes: 03/08/2018 07:53 (64), 01/11/2020 11:06 (7), 02/17/2023 10:45 (6), 02/17/2023 10:51 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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