Gentoo FoundationGLSA-202210-12Lighttpd: Denial of Service
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
62.2%
Background
Lighttpd is a lightweight high-performance web server.
Description
Lighttpd’s mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received.
Impact
An attacker can trigger a denial of service via making Lighttpd try to call an uninitialized function pointer.
Workaround
There is no known workaround at this time.
Resolution
All lighttpd users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.67"
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Gentoo | any | all | www-servers/lighttpd | < 1.4.67 | UNKNOWN |
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
62.2%