CVE-2017-1000370
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.25% probability · 82th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- http://www.debian.org/security/2017/dsa-3981Third Party Advisory
- http://www.securityfocus.com/bid/99149Third Party Advisory, VDB Entry
- https://access.redhat.com/security/cve/CVE-2017-1000370Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/42273/Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/42274/Third Party Advisory, VDB Entry
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txtThird Party Advisory
- http://www.debian.org/security/2017/dsa-3981Third Party Advisory
- http://www.securityfocus.com/bid/99149Third Party Advisory, VDB Entry
- https://access.redhat.com/security/cve/CVE-2017-1000370Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/42273/Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/42274/Third Party Advisory, VDB Entry
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txtThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.