Multiple vulnerabilities in rsyslog.com rsyslog



| Updated: 2020-07-17
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2011-1488
CVE-2011-1489
CVE-2011-1490
CWE-ID CWE-401
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) Memory leak

EUVDB-ID: #VU30619

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-1488

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when $RepeatedMsgReduction was enabled. A local attacker could use this flaw to cause a denial of the rsyslogd daemon service by crashing the service via a sequence of repeated log messages sent within short periods of time. A remote attacker can perform a denial of service attack.

Mitigation

Update to version 5.7.6.

Vulnerable software versions

rsyslog: 5.7.0 - 5.7.5

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2011-04/msg00005.html
https://access.redhat.com/security/cve/cve-2011-1488
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1488
https://github.com/rsyslog/rsyslog/commit/1ef709cc97d54f74d3fdeb83788cc4b01f4c6a2a
https://security-tracker.debian.org/tracker/CVE-2011-1488


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) Memory leak

EUVDB-ID: #VU30620

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-1489

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within rsyslog before 5.7.6 was found in the way deamon processed log messages were logged when multiple rulesets were used and some output batches contained messages belonging to more than one ruleset. A local attacker could cause denial of the rsyslogd daemon service via a log message belonging to more than one ruleset. A remote attacker can perform a denial of service attack.

Mitigation

Update to version 5.7.6.

Vulnerable software versions

rsyslog: 5.7.0 - 5.7.5

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2011-04/msg00005.html
https://access.redhat.com/security/cve/cve-2011-1489
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1489
https://github.com/rsyslog/rsyslog/commit/1ef709cc97d54f74d3fdeb83788cc4b01f4c6a2a
https://security-tracker.debian.org/tracker/CVE-2011-1489


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) Memory leak

EUVDB-ID: #VU30621

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-1490

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within rsyslog before 5.7.6 was found in the way deamon processed log messages are logged when multiple rulesets were used and some output batches contained messages belonging to more than one ruleset. A local attacker could cause denial of the rsyslogd daemon service via a log message belonging to more than one ruleset. A remote attacker can perform a denial of service attack.

Mitigation

Update to version 5.7.6.

Vulnerable software versions

rsyslog: 5.7.0 - 5.7.5

CPE2.3 External links

https://lists.opensuse.org/opensuse-security-announce/2011-04/msg00005.html
https://access.redhat.com/security/cve/cve-2011-1490
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1490
https://github.com/rsyslog/rsyslog/commit/1ef709cc97d54f74d3fdeb83788cc4b01f4c6a2a
https://security-tracker.debian.org/tracker/CVE-2011-1490


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.



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