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Vulnerability · Published Dec 19, 2024 · Assigned by fortinet

CVE-2020-12819

Medium 5.4

In plain English

A medium-severity heap buffer overflow in FortiOS from Fortinet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.8%top 43.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A heap-based buffer overflow vulnerability in the processing of Link Control Protocol messages in FortiGate versions 5.6.12, 6.0.10, 6.2.4 and 6.4.1 and earlier may allow a remote attacker with valid SSL VPN credentials to crash the SSL VPN daemon by sending a large LCP packet, when tunnel mode is enabled. Arbitrary code execution may be theoretically possible, albeit practically very difficult to achieve in this context

Affected products (as reported)

VendorProductVersions
Fortinet FortiOS 6.4.0 – through 6.4.16.2.0 – through 6.2.46.0.0 – through 6.0.105.6.0 – through 5.6.12

Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:U/RL:X/RC:X

References