Red Hat update for fribidi



Published: 2019-12-19
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-18397
CWE-ID CWE-121
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

Red Hat Enterprise Linux for Power
Operating systems & Components / Operating system

Red Hat Enterprise Linux for IBM z Systems
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server
Operating systems & Components / Operating system

Red Hat Enterprise Linux for Scientific Computing
Operating systems & Components / Operating system

Red Hat Enterprise Linux Desktop
Operating systems & Components / Operating system

Red Hat Enterprise Linux Workstation
Operating systems & Components / Operating system

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU22621

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2019-18397

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in GNU fribidi when processing a large number of unicode isolate directional characters. A remote attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for x86_64: 7.0 - 7.7

Red Hat Enterprise Linux for Power: 7 - 7.7

Red Hat Enterprise Linux for IBM z Systems: 7 - 7.7

Red Hat Enterprise Linux Server: 7 - 7.7

Red Hat Enterprise Linux for Scientific Computing: 7

Red Hat Enterprise Linux Desktop: 7

Red Hat Enterprise Linux Workstation: 7


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2019:4326

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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