Heap-based buffer overflow in Augeas - CVE-2017-7555

Vulnerability identifier: #VU20010

CSH Severity: Low

CVSS v4: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-7555

CWE-ID: CWE-122

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when parsing configuration files. A local user with ability to change configuration files can add specially crafted strings, trigger heap-based buffer overflow and execute arbitrary code on the target system with elevated privileges.

Augeas
augeas (Alpine package)
augeas
Red Hat Gluster Storage Server for On-premise
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux EUS Compute Node
Fedora

Install updates from vendor's website.

Augeas - update to 1.8.1
augeas (Alpine package) - update to 1.4.0-r5
augeas - addressed in versions 1.8.1-1.fc25, 1.8.1-1.fc26

• http://www.debian.org/security/2017/dsa-3949
• https://access.redhat.com/errata/RHSA-2017:2788
• https://github.com/hercules-team/augeas/pull/480
• https://puppet.com/security/cve/cve-2017-7555

• Red Hat update for augeas
• Red Hat update for augeas
• Heap-based buffer overflow in augeas (Alpine package)
• Fedora 25 update for augeas
• Fedora 26 update for augeas