CVE-2023-0656 — Stack-based Buffer Overflow in Sonicos

CWE-121 — Stack-based Buffer OverflowCWE-787 — Out-of-bounds Write7 documents6 sources
Severity
7.5HIGHNVD
EPSS
31.5%
top 3.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Sonicwall Sonicos
Timeline
PublishedMar 2
Latest updateApr 2

Description

A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDsonicwall/sonicos7.0.1-5111+2
▶CVEListV5sonicwall/sonicosSonicOS 7.0.1-5095 and earlier, SonicOS NSsp 7.0.1-5083 and earlier, SonicOS NSv 6.5.4.4-44v-21-1551 and earlier+2

🔴Vulnerability Details

3
GHSA
GHSA-w97f-6vh7-h454: A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could caus↗2023-03-03
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CVEList
CVE-2023-0656: A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could caus↗2023-03-02
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VulnCheck
SonicWall sonicos Stack-based Buffer Overflow↗2023
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🔍Detection Rules

2
Suricata
ET WEB_SPECIFIC_APPS SonicWall SonicOS Unauthenticated Stack-Based Buffer Overflow (CVE-2023-0656) M1↗2025-04-02
▶
Suricata
ET WEB_SPECIFIC_APPS SonicWall SonicOS Unauthenticated Stack-Based Buffer Overflow (CVE-2023-0656) M2↗2025-04-02
▶

🕵️Threat Intelligence

1
Bleepingcomputer
Over 178K SonicWall firewalls vulnerable to DoS, potential RCE attacks↗2024-01-15
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CVE-2023-0656 — Stack-based Buffer Overflow in Sonicos | cvebase