6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.001 Low
EPSS
Percentile
39.2%
Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the “trusted_headers” allowed list are ignored and protect users from “Cache poisoning” attacks. In Symfony 5.2, maintainers added support for the X-Forwarded-Prefix
headers, but this header was accessible in SubRequest, even if it was not part of the “trusted_headers” allowed list. An attacker could leverage this opportunity to forge requests containing a X-Forwarded-Prefix
header, leading to a web cache poisoning issue. Versions 5.3.12 and later have a patch to ensure that the X-Forwarded-Prefix
header is not forwarded to subrequests when it is not trusted.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | symfony | < 5.4.23+dfsg-1+deb12u1 | symfony_5.4.23+dfsg-1+deb12u1_all.deb |
Debian | 11 | all | symfony | < 4.4.19+dfsg-2+deb11u4 | symfony_4.4.19+dfsg-2+deb11u4_all.deb |
Debian | 10 | all | symfony | < 3.4.22+dfsg-2+deb10u1 | symfony_3.4.22+dfsg-2+deb10u1_all.deb |
Debian | 999 | all | symfony | < 6.4.7+dfsg-1 | symfony_6.4.7+dfsg-1_all.deb |
Debian | 13 | all | symfony | < 6.4.7+dfsg-1 | symfony_6.4.7+dfsg-1_all.deb |
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.001 Low
EPSS
Percentile
39.2%