Bug 2544869 (CVE-2026-56154)
| Summary: | CVE-2026-56154 httpd: httpd: Denial of Service via mod_rewrite lookahead | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | csutherl, jclere, pjindal, plodge, rhel-process-autobot, szappis, vchlup, watson-tool-maintainers, yozone |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A use-after-free flaw was found in the mod_rewrite module of Apache HTTP Server when evaluating URL lookahead expressions that reference HTTP request headers, such as %{LA-U:HTTP:...}. A remote attacker may be able to trigger invalid memory access in a server using an affected rewrite configuration, potentially causing a denial of service or arbitrary code execution.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.