Bug 41949

Summary:	libidn: Multiple issues (3.3)
Product:	UCS	Reporter:	Arvid Requate <requate>
Component:	Security updates	Assignee:	Arvid Requate <requate>
Status:	CLOSED DUPLICATE	QA Contact:	Janek Walkenhorst <walkenhorst>
Severity:	normal
Priority:	P2	CC:	gohmann
Version:	UCS 3.3	Flags:	requate: Patch_Available+
Target Milestone:	UCS 3.3-0-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):	Security
Max CVSS v3 score:
Bug Depends on:	39440
Bug Blocks:	41950

Description Arvid Requate

2016-08-09 17:27:23 CEST

+++ This bug was initially created as a clone of Bug #39440 +++
Upstream Debian package version 1.25-2+deb7u1 fixes this issue:

* The stringprep_utf8_to_ucs4 function in libidn before 1.31, as used in jabberd2 and other applications, allows context-dependent attackers to read system memory and possibly have other unspecified impact via invalid UTF-8 characters in a string, which triggers an out-of-bounds read (CVE-2015-2059)

GNU Libidn is a fully documented implementation of the Stringprep, Punycode and IDNA specifications. Libidn's purpose is to encode and decode internationalized domain names.

Possibly affects gnutls, wget, and curl

Comment 1 Arvid Requate

2016-08-09 17:27:56 CEST

Upstream Debian package version 1.25-2+deb7u2 fixes the following issues:

* Solve out-of-bounds-read when reading one zero byte as input (CVE-2015-8948)
* out-of-bounds stack read in idna_to_ascii_4i (CVE-2016-6261)
* stringprep_utf8_nfkc_normalize reject invalid UTF-8 (CVE-2016-6263)

CVE-2015-8948: CVSS v2 base score: 2.6 (AV:N/AC:H/Au:N/C:P/I:N/A:N)
CVE-2016-6261: CVSS v2 base score: 2.6 (AV:N/AC:H/Au:N/C:P/I:N/A:N)
CVE-2016-6263: CVSS v2 base score: 2.6 (AV:N/AC:H/Au:N/C:N/I:N/A:P)

Comment 2 Arvid Requate

2016-10-05 11:10:26 CEST


*** This bug has been marked as a duplicate of bug 42568 ***