CVE-2021-20046 — Stack-based Buffer Overflow in Sonicos

CWE-121 — Stack-based Buffer OverflowCWE-787 — Out-of-bounds Write3 documents3 sources
Severity
8.8HIGHNVD
EPSS
1.4%
top 19.78%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Sonicwall Sonicos
Timeline
PublishedJan 10
Latest updateJan 11

Description

A Stack-based buffer overflow in the SonicOS HTTP Content-Length response header allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall. This vulnerability affected SonicOS Gen 5, Gen 6 and Gen 7 firmware versions.

CVSS vector

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

Affected Packages2 packages

▶NVDsonicwall/sonicos5.0.0.0 — 5.9.1.13+6
▶CVEListV5sonicwall/sonicos8 versions+7

🔴Vulnerability Details

2
GHSA
GHSA-ghwj-xjhx-g287: A Stack-based buffer overflow in the SonicOS HTTP Content-Length response header allows a remote authenticated attacker to cause Denial of Service (Do↗2022-01-11
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CVEList
CVE-2021-20046: A Stack-based buffer overflow in the SonicOS HTTP Content-Length response header allows a remote authenticated attacker to cause Denial of Service (Do↗2022-01-07
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CVE-2021-20046 — Stack-based Buffer Overflow in Sonicos | cvebase