CVE-2019-7524: Buffer Overflow
First published: Thu Mar 28 2019(Updated: )
In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root. This occurs because of missing checks in the fts and pop3-uidl components.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| <2.2.36.3 | ||
| >=2.3.0<2.3.5.1 | ||
| =8.0 | ||
| =9.0 | ||
| =14.04 | ||
| =16.04 | ||
| =18.04 | ||
| =18.10 | ||
| =15.0 | ||
| =42.3 | ||
| Dovecot Dovecot | <2.2.36.3 | |
| Dovecot Dovecot | >=2.3.0<2.3.5.1 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| openSUSE Leap | =15.0 | |
| openSUSE Leap | =42.3 | |
| ubuntu/dovecot | <2.3.5.1<2.2.36.3 | 2.3.5.1 2.2.36.3 |
| ubuntu/dovecot | <1:2.2.9-1ubuntu2.6 | 1:2.2.9-1ubuntu2.6 |
| ubuntu/dovecot | <1:2.2.22-1ubuntu2.10 | 1:2.2.22-1ubuntu2.10 |
| ubuntu/dovecot | <1:2.2.33.2-1ubuntu4.3 | 1:2.2.33.2-1ubuntu4.3 |
| ubuntu/dovecot | <1:2.3.2.1-1ubuntu3.2 | 1:2.3.2.1-1ubuntu3.2 |
| redhat/dovecot | <2.3.5.1 | 2.3.5.1 |
| redhat/dovecot | <2.2.36.3 | 2.2.36.3 |
| debian/dovecot | 1:2.3.4.1-5+deb10u6 1:2.3.4.1-5+deb10u7 1:2.3.13+dfsg1-2+deb11u1 1:2.3.19.1+dfsg1-2.1 1:2.3.21+dfsg1-2 |
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Reference Links
- http://www.securityfocus.com/bid/107672
- https://seclists.org/bugtraq/2019/Mar/59
- https://www.debian.org/security/2019/dsa-4418
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
- https://security.gentoo.org/glsa/201904-19
- https://dovecot.org/list/dovecot-news/2019-March/000403.html
- https://dovecot.org/security.html
- https://lists.debian.org/debian-lts-announce/2019/03/msg00038.html
- http://www.openwall.com/lists/oss-security/2019/03/28/1
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00060.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html
- https://usn.ubuntu.com/3928-1/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
- https://launchpad.net/bugs/cve/CVE-2019-7524
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
- https://www.openwall.com/lists/oss-security/2019/03/28/1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1696156
- https://access.redhat.com/errata/RHSA-2020:1062
- https://access.redhat.com/security/cve/cve-2019-7524
- https://bugzilla.redhat.com/show_bug.cgi?id=1696152
- https://github.com/dovecot/core/commit/37eeaef1587a3b99be97cb090094de19e374905c
- https://github.com/dovecot/core/commit/a02c16889f1f3411e9a16b96221c2795d5fdb974
- https://security-tracker.debian.org/tracker/CVE-2019-7524
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7524
- https://www.dovecot.org/pipermail/dovecot-news/2019-March/000403.html
- https://ubuntu.com/security/notices/USN-3928-1
- https://nvd.nist.gov/vuln/detail/CVE-2019-7524
- https://ubuntu.com/security/CVE-2019-7524
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2019-7524.
What is the severity of CVE-2019-7524?
The severity of CVE-2019-7524 is high.
How does CVE-2019-7524 impact Dovecot?
CVE-2019-7524 allows a local attacker to cause a buffer overflow in the indexer-worker process of Dovecot, which can be used to elevate to root.
Which versions of Dovecot are affected by CVE-2019-7524?
Dovecot versions before 2.2.36.3 and 2.3.x before 2.3.5.1 are affected by CVE-2019-7524.
How can I fix the vulnerability in my Dovecot installation?
To fix the vulnerability, you should update Dovecot to version 2.2.36.3 or 2.3.5.1.
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