| Summary: | CVE-2021-21705 php: SSRF bypass in FILTER_VALIDATE_URL | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Guilherme de Almeida Suckevicz <gsuckevi> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | fedora, hhorak, jorton, rcollet |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | php 7.3.29, php 7.4.21, php 8.0.8 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in php. Currently, php's FILTER_VALIDATE_URL check doesn't recognize some non-compliant RFC 3986 URLs and returns them as valid. This flaw allows an attacker to craft URLs, which depending on how the URL filter checking is used on the application side, lead to Server Side Request Forgery. This issue presents an integrity risk for the application, as eventually, the attacker can manipulate resources that shouldn't be fully available for users.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-08-03 13:07:13 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Bug Depends On: | 1978756, 1981421, 1981422, 1981423, 1981424, 1986282 | ||
| Bug Blocks: | 1978792 | ||
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Description
Guilherme de Almeida Suckevicz
2021-07-02 16:18:12 UTC
Created php tracking bugs for this issue: Affects: fedora-all [bug 1978756] Upstream commit for this issue: https://github.com/php/php-src/commit/a5538c62293fa782fcc382d0635cfc0c8b9190e3 https://github.com/php/php-src/commit/4a89e726bd4d0571991dc22a9a1ad4509e8fe347 needed as dependency. Currently php's FILTER_VALIDATE_URL check doesn't recognize some non-compliant RFC 3986 URLs and returns it as valid. This allows an attacker to craft URLs, which depending on how the URL filter checking is used in the application side, lead to Server Side Request Forgery. This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS Via RHSA-2021:2992 https://access.redhat.com/errata/RHSA-2021:2992 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2021-21705 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:1935 https://access.redhat.com/errata/RHSA-2022:1935 |