Resource management error in rsyslog.com rsyslog

1) Resource management error

EUVDB-ID: #VU42487

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-4758

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Double free vulnerability in the writeDataError function in the ElasticSearch plugin (omelasticsearch) in rsyslog before 7.4.2 and before 7.5.2 devel, when errorfile is set to local logging, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted JSON response.

Mitigation

Install update from vendor's website.

Vulnerable software versions

rsyslog: 6.4.2 - 7.5.0

CPE2.3

• cpe:2.3:a:rsyslog_com:rsyslog:6.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog_com:rsyslog:6.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog_com:rsyslog:6.6.0:*:*:*:*:*:*:*

External links

https://www.openwall.com/lists/oss-security/2013/07/05/2
https://www.rsyslog.com/rsyslog-7-4-2-v7-stable-released/
https://www.rsyslog.com/rsyslog-7-5-2-v7-devel-released/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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