CVE-2020-8443
In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis (ossec-analysisd) is vulnerable to an off-by-one heap-based buffer overflow during the cleaning of crafted syslog msgs (received from authenticated remote agents and…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis (ossec-analysisd) is vulnerable to an off-by-one heap-based buffer overflow during the cleaning of crafted syslog msgs (received from authenticated remote agents and delivered to the analysisd processing queue by ossec-remoted).
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.69% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-193, CWE-787
- Affected
- ossec/ossec
- Source
- cve@mitre.org
References
- https://github.com/ossec/ossec-hids/issues/1816Exploit, Third Party Advisory
- https://github.com/ossec/ossec-hids/issues/1821Third Party Advisory
- https://security.gentoo.org/glsa/202007-33Third Party Advisory
- https://www.ossec.net/Vendor Advisory
- https://github.com/ossec/ossec-hids/issues/1816Exploit, Third Party Advisory
- https://github.com/ossec/ossec-hids/issues/1821Third Party Advisory
- https://security.gentoo.org/glsa/202007-33Third Party Advisory
- https://www.ossec.net/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.