RHSA-2020:1000 - Security Advisory

Topic

An update for rsyslog is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The rsyslog packages provide an enhanced, multi-threaded syslog daemon. It supports MySQL, syslog/TCP, RFC 3195, permitted sender lists, filtering on any message part, and fine-grained control over output format.

Security Fix(es):

• rsyslog: heap-based overflow in contrib/pmaixforwardedfrom/pmaixforwardedfrom.c (CVE-2019-17041)
• rsyslog: heap-based overflow in contrib/pmcisconames/pmcisconames.c (CVE-2019-17042)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Virtualization Manager 4.3 x86_64
• Red Hat Virtualization 4 for RHEL 7 x86_64
• Red Hat Virtualization for IBM Power LE 4 for RHEL 7 ppc64le

Fixes

• BZ - 1549706 - rsyslog SEGV with disk-assisted queues, possible corruption
• BZ - 1600171 - Rsyslog omelasticsearch does not work with ES 6.x strict headers
• BZ - 1684236 - rsyslog-8.24.0-34.el7.x86_64 SIGSEGV when using rsyslog-elasticsearch-8.24.0-34
• BZ - 1714094 - rsyslog causes memory leak
• BZ - 1744617 - Memory leak in readjournal() when cs.bWorkAroundJournalBug = 1
• BZ - 1744682 - rsyslog: imfile crash on log rotation
• BZ - 1744856 - truncation detected, (cannot seek backward to begin of last block) - re-start reading from beginning: Inappropriate ioctl for device
• BZ - 1763746 - rsyslog doesn't read lines from imfile after rotation of logs
• BZ - 1766693 - CVE-2019-17041 rsyslog: heap-based overflow in contrib/pmaixforwardedfrom/pmaixforwardedfrom.c
• BZ - 1766700 - CVE-2019-17042 rsyslog: heap-based overflow in contrib/pmcisconames/pmcisconames.c

CVEs

• CVE-2019-17041
• CVE-2019-17042

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.8_release_notes/index