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Red Hat Enterprise Linux 7: RHSA-2020-1000-01 Alert: Rsyslog Heap Issue

red hat
Calendar Grey March 31, 2020
Dist Redhat Esm H88
The Advisory from Red Hat addresses a significant security vulnerability found in rsyslog, detailing its potential consequences and offering guidance on how to mitigate the risk.
An update for rsyslog is now available for Red Hat Enterprise Linux 7

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

Summary

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.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux moderate severity heap overflow security impact rsyslog

References

https://access.redhat.com/security/cve/CVE-2019-17041 https://access.redhat.com/security/cve/CVE-2019-17042 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/7.8_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: rsyslog-8.24.0-52.el7.src.rpm
x86_64: rsyslog-8.24.0-52.el7.x86_64.rpm rsyslog-debuginfo-8.24.0-52.el7.x86_64.rpm rsyslog-gnutls-8.24.0-52.el7.x86_64.rpm rsyslog-gssapi-8.24.0-52.el7.x86_64.rpm rsyslog-kafka-8.24.0-52.el7.x86_64.rpm rsyslog-mmjsonparse-8.24.0-52.el7.x86_64.rpm rsyslog-relp-8.24.0-52.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: rsyslog-doc-8.24.0-52.el7.noarch.rpm
x86_64: rsyslog-crypto-8.24.0-52.el7.x86_64.rpm rsyslog-debuginfo-8.24.0-52.el7.x86_64.rpm rsyslog-elasticsearch-8.24.0-52.el7.x86_64.rpm rsyslog-libdbi-8.24.0-52.el7.x86_64.rpm rsyslog-mmaudit-8.24.0-52.el7.x86_64.rpm rsyslog-mmkubernetes-8.24.0-52.el7.x86_64.rpm rsyslog-mmnormalize-8.24.0-52.el7.x86_64.rpm rsyslog-mmsnmptrapd-8.24.0-52.el7.x86_64.rpm rsyslog-mysql-8.24.0-52.el7.x86_64.rpm rsyslog-pgsql-8.24.0-52.el7.x86_64.rpm rsyslog-snmp-8.24.0-52.el7.x86_64.rpm rsyslog-udpspoof-8.24.0-52.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: rsyslog-8.24.0-52.el7.src.rpm
x86_64: rsyslog-8.24.0-52.el7.x86_64.rpm rsyslog-debuginfo-8.24.0-52.el7.x86_64.rpm rsyslog-gnutls-8.24.0-52.el7.x86_64.rpm rsyslog-gssapi-8.24.0-52.el7.x86_64.rpm rsyslog-kafka-8.24.0-52.el7.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:1000-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1000
Issue date: 2020-03-31

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux moderate severity heap overflow security impact rsyslog

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Bugs Fixed

1549706 - rsyslog SEGV with disk-assisted queues, possible corruption

1600171 - Rsyslog omelasticsearch does not work with ES 6.x strict headers1684236 - rsyslog-8.24.0-34.el7.x86_64 SIGSEGV when using rsyslog-elasticsearch-8.24.0-34

1714094 - rsyslog causes memory leak

1744617 - Memory leak in readjournal() when cs.bWorkAroundJournalBug = 1

1744682 - rsyslog: imfile crash on log rotation

1744856 - truncation detected, (cannot seek backward to begin of last block) - re-start reading from beginning: Inappropriate ioctl for device

1763746 - rsyslog doesn't read lines from imfile after rotation of logs

1766693 - CVE-2019-17041 rsyslog: heap-based overflow in contrib/pmaixforwardedfrom/pmaixforwardedfrom.c

1766700 - CVE-2019-17042 rsyslog: heap-based overflow in contrib/pmcisconames/pmcisconames.c

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