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alpinelinuxAlpine Linux Development TeamALPINE:CVE-2023-47106
HistoryDec 04, 2023 - 9:15 p.m.

CVE-2023-47106

2023-12-0421:15:33
Alpine Linux Development Team
security.alpinelinux.org
10
traefik
http
reverse proxy
load balancer
rfc 7230
nginx
access control
vulnerability
upgrade
unix

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

6.9

Confidence

Low

EPSS

0.001

Percentile

20.6%

Traefik is an open source HTTP reverse proxy and load balancer. When a request is sent to Traefik with a URL fragment, Traefik automatically URL encodes and forwards the fragment to the backend server. This violates RFC 7230 because in the origin-form the URL should only contain the absolute path and the query. When this is combined with another frontend proxy like Nginx, it can be used to bypass frontend proxy URI-based access control restrictions. This vulnerability has been addressed in versions 2.10.6 and 3.0.0-beta5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

OSVersionArchitecturePackageVersionFilename
Alpine3.18-communitynoarchtraefik= 2.10.4-r4UNKNOWN
Alpine3.20-communitynoarchtraefik= 3.0.0-r3UNKNOWN

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

6.9

Confidence

Low

EPSS

0.001

Percentile

20.6%