Description
In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://seclists.org/oss-sec/2018/q1/38 ↗
- https://usn.ubuntu.com/3534-1/ ↗
- https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/ ↗
- http://www.securityfocus.com/bid/102525 ↗
- https://www.exploit-db.com/exploits/44889/ ↗
- https://www.exploit-db.com/exploits/43775/ ↗
- https://usn.ubuntu.com/3536-1/ ↗
- https://access.redhat.com/errata/RHSA-2018:0805 ↗
- http://www.securitytracker.com/id/1040162 ↗
- https://security.netapp.com/advisory/ntap-20190404-0003/ ↗