Bug 43552

Summary:	libevent: Multiple issues (4.1)
Product:	UCS	Reporter:	Arvid Requate <requate>
Component:	Security updates	Assignee:	Arvid Requate <requate>
Status:	CLOSED FIXED	QA Contact:	Daniel Tröder <troeder>
Severity:	normal
Priority:	P3	Flags:	requate: Patch_Available+
Version:	UCS 4.1
Target Milestone:	UCS 4.1-4-errata
Hardware:	Other
OS:	Linux
What kind of report is it?:	Security Issue	What type of bug is this?:	---
Who will be affected by this bug?:	---	How will those affected feel about the bug?:	---
User Pain:		Enterprise Customer affected?:
School Customer affected?:		ISV affected?:
Waiting Support:		Flags outvoted (downgraded) after PO Review:
Ticket number:		Bug group (optional):
Max CVSS v3 score:	7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Bug Depends on:
Bug Blocks:	43553

Description Arvid Requate

2017-02-15 20:43:32 CET

Upstream Debian package version 2.0.19-stable-3+deb7u2 fixes these issues:

* Stack-buffer overflow in the name_parse() function (CVE-2016-10195)
* Stack-buffer overflow in evutil_parse_sockaddr_port() (CVE-2016-10196)
* Out-of-bounds read in search_make_new() (CVE-2016-10197)

Comment 1 Arvid Requate

2017-02-15 21:37:13 CET

Imported and built.

Advisory: libevent.yaml

Comment 2 Daniel Tröder

2017-02-17 10:05:21 CET

OK: advisory
OK: version

dtroeder@dimma:~$ repo_stat.py libevent
[..]
Version 2.0.19-stable-3+deb7u2	Rev 82812	Date 2017-02-15 20:45:50
	Release 4.1-0-0	Scope errata4.1-4

https://security-tracker.debian.org/tracker/source-package/libevent
Release	Version
wheezy	                2.0.19-stable-3+deb7u1
wheezy (security)	2.0.19-stable-3+deb7u2
---
Bug           	wheezy	jessie	stretch	        sid	Description
CVE-2016-10197	fixed	fixed	vulnerable	fixed	
CVE-2016-10196	fixed	fixed	vulnerable	fixed	
CVE-2016-10195	fixed	fixed	vulnerable	fixed

OK: manual test:

root@m90s4:~# univention-install libevent-dev
root@m90s4:~# wget https://github.com/libevent/libevent/raw/master/sample/hello-world.c
root@m90s4:~# gcc -o libevent-hello-world -levent /usr/share/doc/libevent-dev/examples/hello-world.c
root@m90s4:~# ./libevent-hello-world 
root@m90s4:~# [ 'Hello, World!' = "$(ncat 127.0.0.1 9995)" ] && echo OK
OK

Comment 3 Daniel Tröder

2017-02-17 10:07:08 CET

Actually /usr/share/doc/libevent-dev/examples/hello-world.c was used, not the one from github.

Comment 4 Janek Walkenhorst

2017-02-22 12:33:03 CET

<http://errata.software-univention.de/ucs/4.1/404.html>