CVE-2022-41556

A resource leak in gwbackend.c in lighttpd 1.4.56 through 1.4.66 could lead to a denial of service (connection-slot exhaustion) after a large amount of anomalous TCP behavior by clients. It is related to RDHUP mishandling in certain HTTP/1.1 chunked situations. Use of modfastcgi is, for example, affected. This is fixed in 1.4.67.

References

Affected packages

Git / github.com/lighttpd/lighttpd1.4

Affected ranges

Type

GIT

Repo

https://github.com/lighttpd/lighttpd1.4

Events

Introduced

b8e011d230c206503f072cce0c176da8a938cf00

Fixed

fc4cdb76479f10b2c0712f386ca5e405581ed0fc

Database specific

{
    "versions": [
        {
            "introduced": "1.4.56"
        },
        {
            "fixed": "1.4.67"
        }
    ]
}

Affected versions

lighttpd-1.*

lighttpd-1.4.56

lighttpd-1.4.57

lighttpd-1.4.58

lighttpd-1.4.59

lighttpd-1.4.60

lighttpd-1.4.61

lighttpd-1.4.62

lighttpd-1.4.63

lighttpd-1.4.64

lighttpd-1.4.65

lighttpd-1.4.66

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-41556.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "35"
            }
        ]
    }
]