CVE-2018-11236

high-risk

Published 2018-05-18

stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.

Do I need to act?

0.97% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (12)

Glibc

Virtualization Host

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Workstation

Communications Session Border Controller

Enterprise Communications Broker

Data Ontap Edge

Element Software Management

Affected Vendors

Redhat Gnu Oracle Netapp

References (18)

Third Party Advisory http://www.securityfocus.com/bid/104255

Third Party Advisory https://access.redhat.com/errata/RHBA-2019:0327

Patch https://access.redhat.com/errata/RHSA-2018:3092

Broken Link https://security.netapp.com/advisory/ntap-20190329-0001/

Third Party Advisory https://security.netapp.com/advisory/ntap-20190401-0001/

Issue Tracking https://sourceware.org/bugzilla/show_bug.cgi?id=22786

https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=5460617d1567657621107d895e...

https://usn.ubuntu.com/4416-1/

Patch https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html