Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 542
Alerts This Week
Warning Icon 1 542

Red Hat 7.3: RHSA-2018-1707-01 Critical Librelp Buffer Overflow

red hat
Calendar Grey May 23, 2018
Scroller Redhat
A vital librelp patch has been released for Red Hat Enterprise Linux addressing a stack-related buffer overflow vulnerability.
An update for librelp is now available for Red Hat Enterprise Linux 7.3 Extended Update Support

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

Librelp is an easy-to-use library for the Reliable Event Logging Protocol (RELP) protocol. RELP is a general-purpose, extensible logging protocol.
Security Fix(es):
* librelp: Stack-based buffer overflow in relpTcpChkPeerName function in src/tcp.c (CVE-2018-1000140)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Red Hat would like to thank Rainer Gerhards (rsyslog) for reporting this issue. Upstream acknowledges Bas van Schaik (lgtm.com / Semmle) and Kevin Backhouse (lgtm.com / Semmle) as the original reporters.

Topics%20covered

Topics Covered

security advisory security update buffer overflow critical Red Hat Enterprise Linux librelp

References

https://access.redhat.com/security/cve/CVE-2018-1000140 https://access.redhat.com/security/updates/classification/#critical

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.3):
Source: librelp-1.2.0-4.el7_3.src.rpm
x86_64: librelp-1.2.0-4.el7_3.i686.rpm librelp-1.2.0-4.el7_3.x86_64.rpm librelp-debuginfo-1.2.0-4.el7_3.i686.rpm librelp-debuginfo-1.2.0-4.el7_3.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3):
x86_64: librelp-debuginfo-1.2.0-4.el7_3.i686.rpm librelp-debuginfo-1.2.0-4.el7_3.x86_64.rpm librelp-devel-1.2.0-4.el7_3.i686.rpm librelp-devel-1.2.0-4.el7_3.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.3):
Source: librelp-1.2.0-4.el7_3.src.rpm
ppc64: librelp-1.2.0-4.el7_3.ppc.rpm librelp-1.2.0-4.el7_3.ppc64.rpm librelp-debuginfo-1.2.0-4.el7_3.ppc.rpm librelp-debuginfo-1.2.0-4.el7_3.ppc64.rpm
ppc64le: librelp-1.2.0-4.el7_3.ppc64le.rpm librelp-debuginfo-1.2.0-4.el7_3.ppc64le.rpm
s390x: librelp-1.2.0-4.el7_3.s390.rpm librelp-1.2.0-4.el7_3.s390x.rpm librelp-debuginfo-1.2.0-4.el7_3.s390.rpm librelp-debuginfo-1.2.0-4.el7_3.s390x.rpm
x86_64: librelp-1.2.0-4.el7_3.i686.rpm librelp-1.2.0-4.el7_3.x86_64.rpm librelp-debuginfo-1.2.0-4.el7_3.i686.rpm librelp-debuginfo-1.2.0-4.el7_3.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.3):
ppc64: librelp-debuginfo-1.2.0-4.el7_3.ppc.rpm librelp-debuginfo-1.2.0-4.el7_3.ppc64.rpm librelp-devel-1.2.0-4.el7_3.ppc.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:1707-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1707
Issue date: 2018-05-23

Topic

An update for librelp is now available for Red Hat Enterprise Linux 7.3Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Critical. 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 security update buffer overflow critical Red Hat Enterprise Linux librelp

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) - x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.3) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.3) - ppc64, ppc64le, s390x, x86_64

Bugs Fixed

1560084 - CVE-2018-1000140 librelp: Stack-based buffer overflow in relpTcpChkPeerName function in src/tcp.c

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.