CVE & CISA-KEV Catalog

CVE-2022-22707

MEDIUMEPSS 95th pctl
5.9
CVSS v3
NVD

Description

In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.

CWE-787Out-of-bounds Write

How to fix

Remediation Available
lighttpdDebian
Fixed in:1.4.59-1+deb11u1CVE-2022-22707
Fixed in:1.4.64-1CVE-2022-22707
Fixed in:1.4.64-1CVE-2022-22707
Fixed in:1.4.64-1CVE-2022-22707
lighttpdUbuntu
Fixed in:1.4.55-1ubuntu1.20.04.2USN-5903-1
Fixed in:1.4.63-1ubuntu3.1USN-5903-1
Fixed in:1.4.65-2ubuntu1.1USN-5903-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

8.97%probability of exploitation in 30 days
95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Third-Party Advisory1

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-22457Critical9.0100%KEV + RansomFix
CVE-2025-0282Critical9.0100%KEV + Ransom-
CVE-2015-3113Critical9.8100%KEVFix
CVE-2021-20038Critical9.8100%KEV + Ransom-
CVE-2023-4863High8.8100%KEVFix
CVE-2020-16040Medium6.5100%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.