CVE-2021-1368

CWE-787 — Out-of-bounds Write4 documents4 sources
Severity
8.8HIGH
EPSS
0.3%
top 49.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Cisco Unified Computing SystemCisco Cisco Nx-os SoftwareCisco Firepower Extensible Operating System+1 more
Timeline
PublishedFeb 24
Latest updateMay 24

Description

A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted Cisco UDLD protocol packets to a directly connected, affected device. A successful ex…

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages4 packages

▶NVDcisco/unified_computing_system4.1 — 4.1\(2c\)+1
▶NVDcisco/nx-os7 versions+6

🔴Vulnerability Details

2
GHSA
GHSA-jp9c-4gwx-v8x8: A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, ad↗2022-05-24
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CVEList
Cisco FXOS and NX-OS Software Unidirectional Link Detection Denial of Service and Arbitrary Code Execution Vulnerability↗2021-02-24
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📋Vendor Advisories

1
Cisco
Cisco FXOS and NX-OS Software Unidirectional Link Detection Denial of Service and Arbitrary Code Execution Vulnerability↗2021-02-24
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