CVE-2013-4758

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-10-04 · updated 2026-06-16
Weakness: CWE-399

Description

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.

Affected products

rsyslog: through 7.4.1; through 7.5.1; 6.4.2, 6.5.1, 6.6.0, 7.1.0, 7.1.1, 7.1.2 (+34)

References

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

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