A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 7.2.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
FortiOS and FortiProxy SSL-VPN components from Fortinet are affected by this flaw. A remote attacker without authentication could send specially crafted requests to run arbitrary code or commands on the affected device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.
Timeline
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CVE published
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Fortinet FortiProxy
From 7.2.0 · through 7.2.1; From 7.0.0 · through 7.0.7; From 2.0.0 · through 2.0.11; From 1.2.0 · through 1.2.13; From 1.1.0 · through 1.1.6; From 1.0.0 · through 1.0.7
- Fortinet FortiOS
From 7.2.0 · through 7.2.2; From 7.0.0 · through 7.0.8; From 6.4.0 · through 6.4.10; From 6.2.0 · through 6.2.11; From 6.0.0 · through 6.0.15; From 5.6.0 · through 5.6.14; From 5.4.0 · through 5.4.13; From 5.2.0 · through 5.2.15; From 5.0.0 · through 5.0.14
References 1
fortiguard.com
Questions about CVE-2022-42475
What does this mean?
A heap-based buffer overflow in FortiOS SSL-VPN lets a remote attacker who has not logged in run arbitrary code or commands on the device by sending specially crafted requests.Source: fortiguard.com
Am I affected, and how do I check?
Affected versions are FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11 and 6.0.0 through 6.0.15, and FortiProxy SSL-VPN 7.2.0 through 7.2.1 and 7.0.0 through 7.0.7. To check, compare the firmware version shown in the device's system status with these ranges and confirm whether SSL-VPN is enabled.Source: fortiguard.com
What should I do about it?
Upgrade FortiOS to 7.2.3 or above, or upgrade FortiProxy to 7.2.2 or above as the advisory states. Until the upgrade is done, disable SSL-VPN, which is the listed workaround.Source: fortiguard.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-12-13, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data