Paper/Archive/CVE-2021-42756

CVE-2021-42756

Fortinet FortiWeb — Multiple stack-based buffer overflow vulnerabilities [CWE-121] in the proxy daemon of FortiWeb 5.x all versions, 6.0.7 and below, 6.1.2 a…

Description · from the CVE record

Multiple stack-based buffer overflow vulnerabilities [CWE-121] in the proxy daemon of FortiWeb 5.x all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4 all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests.

Affected

ProductAffectedFixed inSource
FortiWeb6.4.0 – 6.4.1–CNA
FortiWeb6.3.0 – 6.3.16–CNA
FortiWeb6.2.0 – 6.2.6–CNA
FortiWeb6.1.0 – 6.1.2–CNA
FortiWeb6.0.0 – 6.0.7–CNA
FortiWeb5.9.0 – 5.9.1–CNA
FortiWeb5.8.5 – 5.8.7–CNA
FortiWeb5.8.0 – 5.8.3–CNA
FortiWeb5.7.0 – 5.7.3–CNA
FortiWeb5.6.0 – 5.6.2–CNA
FortiWeb5.8.0 – < 5.8.*5.8.*CNA
FortiWeb5.7.0 – < 5.7.*5.7.*CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
fortinet (CNA)9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

reffortiguard.com/psirt/FG-IR-21-186