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Re: [tor-bugs] #22660 [Core Tor/Tor]: Guard against stack smashing attacks in tor
#22660: Guard against stack smashing attacks in tor
-------------------------------------------------+-------------------------
Reporter: teor | Owner: nickm
Type: defect | Status:
| accepted
Priority: Medium | Milestone: Tor:
| 0.3.2.x-final
Component: Core Tor/Tor | Version:
Severity: Normal | Resolution:
Keywords: tor-hardening, security | Actual Points:
029-backport 030-backport 031-backport |
Parent ID: | Points: 0.5
Reviewer: | Sponsor:
-------------------------------------------------+-------------------------
Changes (by nickm):
* owner: => nickm
* status: new => accepted
* keywords: tor-hardening, security => tor-hardening, security
029-backport 030-backport 031-backport
Comment:
We already have -fstack-protector-all, but I guess it doesn't include
this?
Also, we should never be installed SUID, yeah?
That said, this is indeed a pretty trivial change; see my branch
`harden_22660_029`, for 0.3.2 and possible backport as far as 0.2.9
When I try to build with this, I get many `/usr/bin/ld: warning: -z
noexecheap ignored.` warnings. I don't know if that's something I should
be concerned about.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22660#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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