Bug 1491236 – CVE-2017-14230 cyrus-imapd: Off-by-one error in prefix calculation in the mboxlist_do_find function

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Bug 1491236 - (CVE-2017-14230) CVE-2017-14230 cyrus-imapd: Off-by-one error in prefix calculation in the mboxlist_do_find function

Summary:	CVE-2017-14230 cyrus-imapd: Off-by-one error in prefix calculation in the mbo...

Status:	CLOSED NOTABUG

Aliases:	CVE-2017-14230

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
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Target Release:	---
Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=moderate,public=20170831,repor...
Keywords:	Reopened, Security

Depends On:	1491237
Blocks:	1491238
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Reported:	2017-09-13 07:36 EDT by Andrej Nemec
Modified:	2017-09-26 11:55 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	cyrus-imapd 3.0.4
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Last Closed:	2017-09-15 04:13:36 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2017-09-13 07:36:11 EDT

In the mboxlist_do_find function in imap/mboxlist.c in Cyrus IMAP before 3.0.4, an off-by-one error in prefix calculation for the LIST command caused use of uninitialized memory, which might allow remote attackers to obtain sensitive information or cause a denial of service (daemon crash) via a 'LIST "" "Other Users"' command.

Upstream issue:

https://github.com/cyrusimap/cyrus-imapd/issues/2132

Upstream patch:

https://github.com/cyrusimap/cyrus-imapd/commit/6bd33275368edfa71ae117de895488584678ac79

Comment 1 Andrej Nemec 2017-09-13 07:37:13 EDT

Created cyrus-imapd tracking bugs for this issue:

Affects: fedora-25 [bug 1491237]

Comment 2 Jason Tibbitts 2017-09-13 11:13:22 EDT

My understanding was that this issue was not present previous to version 3.0.0, and thus Fedora 25 needs no fix.

Comment 3 Andrej Nemec 2017-09-14 03:13:52 EDT

(In reply to Jason Tibbitts from comment #2)
> My understanding was that this issue was not present previous to version
> 3.0.0, and thus Fedora 25 needs no fix.

This seems to hold true, thanks for closing the fedora bug. Let us finish the deeper analysis of cyrus-imapd in RHEL, then we'll close this one as well.

Comment 4 Pedro Yóssis Silva Barbosa 2017-09-26 11:55:20 EDT

This issue did not affect the versions of cyrus-imapd as shipped with Red Hat Enterprise Linux 5, 6, and 7.

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