Cisco NX-OS System Login Block-for Command out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco NX-OS and classified as critical. Affected is an unknown function of the component System Login Block-for Command Handler. The manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2021-1590. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco NX-OS (Router Operating System) (the affected version unknown) and classified as critical. This issue affects an unknown part of the component System Login Block-for Command Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is availability.

The weakness was shared 08/26/2021 as cisco-sa-nxos-login-blockfor-RwjGVEcu. It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2021-1590. 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 08/26/2021).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / 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: 🔍

Timelineinfo

11/13/2020 🔍
08/26/2021 +285 days 🔍
08/26/2021 +0 days 🔍
08/29/2021 +3 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-nxos-login-blockfor-RwjGVEcu
Status: Confirmed

CVE: CVE-2021-1590 (🔍)
GCVE (CVE): GCVE-0-2021-1590
GCVE (VulDB): GCVE-100-181499

Entryinfo

Created: 08/26/2021 06:52
Updated: 08/29/2021 14:27
Changes: 08/26/2021 06:52 (38), 08/29/2021 14:25 (2), 08/29/2021 14:27 (1)
Complete: 🔍
Cache ID: 216::103

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