Description
Stack-based buffer overflow in the evutil_parse_sockaddr_port function in evutil.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (segmentation fault) via vectors involving a long string in brackets in the ip_as_string argument.
References (17)
Core 17
Core References
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/96014
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1106
Third Party Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-12/
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2017/dsa-3789
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2017/02/02/7
Third Party Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-11/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201705-01
Third Party Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-10/
Third Party Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-13/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2017/01/31/17
Broken Link, Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1038320
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1343453
Exploit, Issue Tracking, Third Party Advisory x_refsource_confirm
https://github.com/libevent/libevent/issues/318
Release Notes, Third Party Advisory x_refsource_confirm
https://github.com/libevent/libevent/blob/release-2.1.6-beta/ChangeLog
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1104
Patch, Third Party Advisory x_refsource_confirm
https://github.com/libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1201
Scores
CVSS v3
7.5
EPSS
0.0075
EPSS Percentile
73.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-787
Status
published
Products (5)
debian/debian_linux
8.0
libevent_project/libevent
< 2.1.5
mozilla/firefox
52.0
mozilla/firefox
< 45.9.0
mozilla/thunderbird
< 52.1.0
Published
Mar 15, 2017
Tracked Since
Feb 18, 2026