Denial of service in rsyslog
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-16881 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
rsyslog Server applications / Other server solutions |
| Vendor | rsyslog.com |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Input validation error
EUVDB-ID: #VU17698
Risk: Low
CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-16881
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the imptcp module due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted message to the imptcp socket that submits malicious input and cause the affected software to crash, resulting in a DoS condition.
MitigationUpdate to version 8.27.
Vulnerable software versionsrsyslog: 8.1.0 - 8.26
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881
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. However, proof of concept for this vulnerability is available.
