Bug 1542985 (CVE-2018-5379) - CVE-2018-5379 quagga: Double free vulnerability in bgpd when processing certain forms of UPDATE message allowing to crash or potentially execute arbitrary code
Summary: CVE-2018-5379 quagga: Double free vulnerability in bgpd when processing certa...
Alias: CVE-2018-5379
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1546007 1546008 1546015 1546016
Blocks: 1543001
TreeView+ depends on / blocked
Reported: 2018-02-07 14:07 UTC by Adam Mariš
Modified: 2021-03-11 17:08 UTC (History)
9 users (show)

Fixed In Version: quagga 1.2.3
Doc Type: If docs needed, set a value
Doc Text:
A double-free vulnerability was found in Quagga. A BGP peer could send a specially crafted UPDATE message which would cause allocated blocks of memory to be free()d more than once, potentially leading to a crash or other issues.
Clone Of:
Last Closed: 2019-06-08 03:39:26 UTC

Attachments (Terms of Use)
Upstream patch (3.15 KB, patch)
2018-02-07 14:24 UTC, Adam Mariš
no flags Details | Diff

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:0377 0 normal SHIPPED_LIVE Important: quagga security update 2018-02-28 23:30:59 UTC

Description Adam Mariš 2018-02-07 14:07:20 UTC
The Quagga BGP daemon, bgpd, can double-free memory when processing certain forms of UPDATE message, containing cluster-list and/or unknown attributes.

This issue can be triggered by an optional/transitive UPDATE attribute, that all conforming eBGP speakers should pass along.  This means this may triggerable in many affected Quagga bgpd processes across a wide area of a network, because of just one UPDATE message.

This issue could result in a crash of bgpd, or even allow a remote attacker to gain control of an affected bgpd process.

All versions are likely affected.

Comment 1 Adam Mariš 2018-02-07 14:07:23 UTC

Name: the Quagga project

Comment 2 Adam Mariš 2018-02-07 14:24:25 UTC
Created attachment 1392685 [details]
Upstream patch

Comment 3 Doran Moppert 2018-02-13 04:15:37 UTC
External References:


Comment 4 Doran Moppert 2018-02-13 05:02:30 UTC

Glibc's heap protection mitigations render this issue more difficult to exploit, though bypasses may still be possible.

Comment 5 Doran Moppert 2018-02-16 04:37:19 UTC
Created quagga tracking bugs for this issue:

Affects: fedora-all [bug 1546008]

Comment 8 errata-xmlrpc 2018-02-28 18:27:00 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:0377 https://access.redhat.com/errata/RHSA-2018:0377

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