Red Hat update for perl

Published: 2018-04-23

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-6797 CVE-2018-6798
CWE-ID	CWE-122 CWE-119
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Red Hat Enterprise Linux for x86_64 Operating systems & Components / Operating system
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU11833

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6797

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists in S_regatom() in 'regcomp.c' due to heap-based buffer overflow. A local attacker can exploit a specially crafted regular expression, trigger memory corruption and cause the service to crash or run Perl code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for x86_64: 6 - 7.4

External links

http://access.redhat.com/errata/RHSA-2018:1192

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Heap-based buffer over-read

EUVDB-ID: #VU11834