The zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields as format strings, possibly allowing a format string attack with unspecified impact.

According to the versions of the rsyslog packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - The zmq3 input and output modules in rsyslog before 8.28.0 interpreted description fields as format     strings, possibly allowing a format string attack with unspecified impact. (CVE-2017-12588)

  - Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap     buffer overflow when octet-counted framing is used. This can result in a segfault or some other     malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But     there may still be a slight chance for experts to do that. The bug occurs when the octet count is read.
    While there is a check for the maximum number of octets, digits are written to a heap buffer even when the     octet count is over the maximum, This can be used to overrun the memory buffer. However, once the sequence     of digits stop, no additional characters can be added to the buffer. In our opinion, this makes remote     exploits impossible or at least highly complex. Octet-counted framing is one of two potential framing     modes. It is relatively uncommon, but enabled by default on receivers. Modules `imtcp`, `imptcp`,     `imgssapi`, and `imhttp` are used for regular syslog message reception. It is best practice not to     directly expose them to the public. When this practice is followed, the risk is considerably lower. Module     `imdiag` is a diagnostics module primarily intended for testbench runs. We do not expect it to be present     on any production installation. Octet-counted framing is not very common. Usually, it needs to be     specifically enabled at senders. If users do not need it, they can turn it off for the most important     modules. This will mitigate the vulnerability. (CVE-2022-24903)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the rsyslog packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - The zmq3 input and output modules in rsyslog before     8.28.0 interpreted description fields as format     strings, possibly allowing a format string attack with     unspecified impact.(CVE-2017-12588)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the rsyslog package has been released.

ID	Name	Product	Family	Severity
170807	EulerOS Virtualization 3.0.2.2 : rsyslog (EulerOS-SA-2023-1291)	Nessus	Huawei Local Security Checks	critical
142326	EulerOS 2.0 SP2 : rsyslog (EulerOS-SA-2020-2394)	Nessus	Huawei Local Security Checks	critical
140905	EulerOS 2.0 SP3 : rsyslog (EulerOS-SA-2020-2138)	Nessus	Huawei Local Security Checks	critical
121726	Photon OS 1.0: Rsyslog PHSA-2017-0030	Nessus	PhotonOS Local Security Checks	critical

Detections

Analytics

CVE-2017-12588

critical

Tenable Plugins

critical

critical

critical

critical