CVE-2022-22707 Memory corruption in n/a

What is CVE-2022-22707?

CVE-2022-22707 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 6 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-787

Which versions are affected by CVE-2022-22707?

It affects 2 products.

Products include Debian Debian Linux, Lighttpd Lighttpd.

How do I fix CVE-2022-22707?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-22707 being exploited?

There is no known exploitation of CVE-2022-22707 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2022-22707, DEBIAN-CVE-2022-22707, DSA-5040-1, GHSA-j3jp-95wp-9q83, MGASA-2022-0161, OESA-2022-1491 and 3 more.