GNU RPM Signature Check data authenticity

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 (≈)
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability marked as very critical has been reported in GNU RPM. Affected by this vulnerability is an unknown functionality of the component Signature Check Handler. The manipulation leads to data authenticity. This vulnerability is referenced as CVE-2021-20271. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in GNU RPM (the affected version is unknown). This issue affects an unknown code of the component Signature Check Handler. The manipulation with an unknown input leads to a data authenticity vulnerability. Using CWE to declare the problem leads to CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Impacted is confidentiality, integrity, and availability.

The weakness was published 03/27/2021. It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2021-20271. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/06/2021).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
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: Data authenticity
CWE: CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

12/17/2020 🔍
03/27/2021 +100 days 🔍
03/27/2021 +0 days 🔍
04/06/2021 +10 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-20271 (🔍)
GCVE (CVE): GCVE-0-2021-20271
GCVE (VulDB): GCVE-100-171875

Entryinfo

Created: 03/27/2021 11:23
Updated: 04/06/2021 06:44
Changes: 03/27/2021 11:23 (36), 04/06/2021 06:40 (5), 04/06/2021 06:44 (18)
Complete: 🔍
Cache ID: 216::103

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