Bug 44857

Summary:	libgcrypt20: Multiple issues (4.2)
Product:	UCS	Reporter:	Arvid Requate <requate>
Component:	Security updates	Assignee:	Philipp Hahn <hahn>
Status:	CLOSED FIXED	QA Contact:	Arvid Requate <requate>
Severity:	normal
Priority:	P5	Flags:	requate: Patch_Available+
Version:	UCS 4.2
Target Milestone:	UCS 4.2-3-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:	6.1 (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N)

Description Arvid Requate

2017-06-26 14:44:39 CEST

Upstream Debian package version 1.6.3-2+deb8u3 fixes:

* In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library. (CVE-2017-9526)

Comment 1 Arvid Requate

2017-07-11 14:27:54 CEST

Upstream Debian package version 1.6.3-2+deb8u4 fixes:

* local side-channel attack allowing full key recovery for RSA-1024 (CVE-2017-7526)

Comment 2 Arvid Requate

2017-09-08 14:52:57 CEST

The libgcrypt20 version in Debian Jessie is not affected by CVE-2017-0379.

Comment 3 Philipp Hahn

2018-01-25 10:59:37 CET

Mass-import from Debian-Security:
  python -m univention.repong.^Cbmirror -s jessie -r 4.2-3 --override=$HOME/REPOS/repo-ng/mirror/update_ucs42_mirror_from_debian.yml --errata=doc/errata --sql --process=ALL -vvvv --now=201801211553

YAML: git:bd6159834a..449aa5a7cf

Comment 4 Arvid Requate

2018-04-12 19:36:38 CEST

Verified:
* Upstream binary imported into errata4.2-3
* No additional UCS patches in 4.2
* Package update: Ok
* Advisory: Ok

Comment 5 Arvid Requate

2018-04-18 14:15:52 CEST

<http://errata.software-univention.de/ucs/4.2/337.html>