Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS13M3c5LXZyZjUtOG14OM4AAu1p

ReactPHP's HTTP server parses encoded cookie names so malicious `__Host-` and `__Secure-` cookies can be sent

Impact

In ReactPHP's HTTP server component versions below v1.7.0, when ReactPHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host- and __Secure- confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-7070 and CVE-2020-8184 for more information.

Patches

• https://github.com/reactphp/http/commit/663c9a3b77b71463fa7fcb76a6676ffd16979dd6 - Fixed in reactphp/http v1.7.0

Workarounds

Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any unexpected Cookie request headers.

References

• CVE-2020-7070, https://bugs.php.net/bug.php?id=79699 and https://github.com/php/php-src/commit/6559fe912661ca5ce5f0eeeb591d928451428ed0
• CVE-2020-8184, https://hackerone.com/reports/895727 and https://github.com/rack/rack/commit/1f5763de6a9fe515ff84992b343d63c88104654c
• Originally introduced via https://github.com/reactphp/http/pull/175

Credits

• Thanks to Marco Squarcina (TU Wien) for reporting this and working with us to coordinate this security advisory

For more information

If you have any questions or comments about this advisory:

• Join the discussion
• Email us at [email protected]

Permalink: https://github.com/advisories/GHSA-w3w9-vrf5-8mx8
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13M3c5LXZyZjUtOG14OM4AAu1p
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 2 years ago
Updated: almost 2 years ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Percentage: 0.00174
EPSS Percentile: 0.54696

Identifiers: GHSA-w3w9-vrf5-8mx8, CVE-2022-36032
References:

• https://github.com/reactphp/http/security/advisories/GHSA-w3w9-vrf5-8mx8
• https://nvd.nist.gov/vuln/detail/CVE-2022-36032
• https://github.com/reactphp/http/pull/175
• https://github.com/reactphp/http/commit/663c9a3b77b71463fa7fcb76a6676ffd16979dd6
• https://github.com/reactphp/http/releases/tag/v1.7.0
• https://github.com/FriendsOfPHP/security-advisories/blob/master/react/http/CVE-2022-36032.yaml
• https://github.com/advisories/GHSA-w3w9-vrf5-8mx8

Repository: https://github.com/reactphp/http
Blast Radius: 17.5

Affected Packages