Bug 39440 – libidn: Multiple issues (4.1)

Bug 39440 - libidn: Multiple issues (4.1)


Summary:	libidn: Multiple issues (4.1)

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Security updates
Version:	UCS 4.1
Hardware:	Other Linux

Importance:	P2 normal (vote)
Target Milestone:	UCS 4.1-3-errata
Assigned To:	Janek Walkenhorst
QA Contact:	Arvid Requate

URL:
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Depends on:
Blocks:	41949
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Reported:	2015-09-30 10:13 CEST by Arvid Requate
Modified:	2017-10-26 13:53 CEST (History)
CC List:	1 user (show)

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What kind of report is it?:	Security Issue
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Flags:	requate: Patch_Available+

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Description Arvid Requate

2015-09-30 10:13:05 CEST

* 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

2016-05-23 18:17:29 CEST

Upstream Debian package version 1.25-2+deb7u1 fixes this issue.

Comment 2 Arvid Requate

2016-08-09 17:23:45 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 3 Janek Walkenhorst

2016-08-26 13:04:43 CEST

Tests (i386): OK
Advisory: libidn.yaml

Comment 4 Arvid Requate

2016-09-05 17:56:11 CEST

Verified:
* 1.25-2+deb7u2 imported and built
* No UCS patches
* Package update Ok (amd64)
* Advisory Ok

Comment 5 Janek Walkenhorst

2016-09-07 18:41:39 CEST

<http://errata.software-univention.de/ucs/4.1/240.html>