Multiple vulnerabilities in Rsyslog
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2019-17041 CVE-2019-17040 CVE-2019-17042 |
| CWE-ID | CWE-119 CWE-125 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
rsyslog Server applications / Other server solutions |
| Vendor | rsyslog.com |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Buffer overflow
EUVDB-ID: #VU22770
Risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2019-17041
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists in "contrib/pmaixforwardedfrom/pmaixforwardedfrom.c" due to a boundary error in the parser for AIX log messages. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsrsyslog: 8.1908.0
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00031.html
https://github.com/rsyslog/rsyslog/blob/v8-stable/ChangeLog
https://github.com/rsyslog/rsyslog/pull/3884
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.
2) Out-of-bounds read
EUVDB-ID: #VU22772
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2019-17040
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists in "contrib/pmdb2diag/pmdb2diag.c" due to a boundary condition when the level length is mishandled. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsrsyslog: 8.1908.0
CPE2.3 External linkshttps://github.com/rsyslog/rsyslog/blob/v8-stable/ChangeLog
https://github.com/rsyslog/rsyslog/pull/3875
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.
3) Buffer overflow
EUVDB-ID: #VU22771
Risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2019-17042
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists in "contrib/pmcisconames/pmcisconames.c" due to a boundary error in the parser for Cisco log messages. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsrsyslog: 8.1908.0
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-11/msg00031.html
https://github.com/rsyslog/rsyslog/blob/v8-stable/ChangeLog
https://github.com/rsyslog/rsyslog/pull/3883
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.
