CVE-2017-1000370
Description
The offset2lib patch as used in the Linux Kernel contains a vulnerability that allows a PIE binary to be execve()'ed with 1GB of arguments or environmental strings then the stack occupies the address 0x80000000 and the PIE binary is mapped above 0x40000000 nullifying the protection of the offset2lib patch. This affects Linux Kernel version 4.11.5 and earlier. This is a different issue than CVE-2017-1000371. This issue appears to be limited to i386 based systems.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Linux Kernel (Debian 7/8/9/10 / Fedora 23/24/25 / CentOS 5.3/5.11/6.0/6.8/7.2.1511) - 'ldso_hwcap Stack Clash' Local Privilege Escalation
Linux Kernel - 'offset2lib' Stack Clash
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| arch | fixed | 4.9.39-1 | |
| debian | bookworm | fixed | 4.11.11-1 |
| debian | bullseye | fixed | 4.11.11-1 |
| debian | forky | fixed | 4.11.11-1 |
| debian | sid | fixed | 4.11.11-1 |
| debian | trixie | fixed | 4.11.11-1 |
| linux-kernel | affected | 4.1.43 |
References
- http://www.debian.org/security/2017/dsa-3981
- http://www.securityfocus.com/bid/99149
- https://access.redhat.com/security/cve/CVE-2017-1000370
- https://www.exploit-db.com/exploits/42273/
- https://www.exploit-db.com/exploits/42274/
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
- https://www.suse.com/security/cve/CVE-2017-1000370.html
- https://security-tracker.debian.org/tracker/CVE-2017-1000370
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.