CVE-2021-1439 — Classic Buffer Overflow in Cisco Catalyst 9800 Firmware

CWE-120 — Classic Buffer Overflow5 documents5 sources
Severity
7.4HIGHNVD
EPSS
0.1%
top 71.14%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco Catalyst 9800 FirmwareCisco Aironet Access Point Software
Timeline
PublishedMar 24
Latest updateMay 24

Description

A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of incoming mDNS traffic. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device through a wireless network that is configured in FlexConnect local switching mode or throu…

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 2.8 | Impact: 4.0

Affected Packages2 packages

▶NVDcisco/catalyst_9800_firmware17.1 — 17.3.3

🔴Vulnerability Details

2
GHSA
GHSA-2p9c-p5jq-7j4g: A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, adjacent at↗2022-05-24
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CVEList
Cisco Aironet Access Points FlexConnect Multicast DNS Denial of Service Vulnerability↗2021-03-24
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📋Vendor Advisories

1
Cisco
Cisco Aironet Access Points FlexConnect Multicast DNS Denial of Service Vulnerability↗2021-03-24
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🕵️Threat Intelligence

1
Talos
Vulnerability Spotlight: Memory corruption and use-after-free vulnerabilities in Foxit PDF Reader↗2022-01-31
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CVE-2021-1439 — Classic Buffer Overflow in Cisco | cvebase