Bug 1372306
| Summary: | glibc: Implement libio vtable verification [rhel-7.4] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Florian Weimer <fweimer> |
| Component: | glibc | Assignee: | glibc team <glibc-bugzilla> |
| Status: | CLOSED DUPLICATE | QA Contact: | qe-baseos-tools-bugs |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.3 | CC: | ashankar, codonell, fweimer, mnewsome, pfrankli |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-03 12:02:57 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1372305 | ||
| Bug Blocks: | 1372375 | ||
Security work in rhel-7 is very important and we will be enabling this in rhel-7.4. CVE work took precedence over this in our review of rhel-7.4 work. Thus this bug did not make the cut for rhel-7.4. We will review this again as the rhel-7.4 development process progresses and evaluate if we have capacity to complete this work. Given scheduling and capacity I'm moving this to rhel-7.6. We will get other security enhancements in place for rhel-7.5. Or we will come back to this if we have time. *** This bug has been marked as a duplicate of bug 1398413 *** |
We should backport this commit, potentially in a slightly modified verification so that it can be turned of by a file /etc (for increased backwards compatibility): commit db3476aff19b75c4fdefbe65fcd5f0a90588ba51 Author: Florian Weimer <fweimer> Date: Thu Jun 23 20:01:40 2016 +0200 libio: Implement vtable verification [BZ #20191] This blocks a publicly documented exploitation techniques which achieves arbitrary code execution through function pointers used by libio to implemented stdio streams.