Bug 46776

Summary:	openssl1.0: Multiple issues (4.3)
Product:	UCS	Reporter:	Philipp Hahn <hahn>
Component:	Security updates	Assignee:	Philipp Hahn <hahn>
Status:	CLOSED FIXED	QA Contact:	Arvid Requate <requate>
Severity:	normal
Priority:	P3	CC:	requate
Version:	UCS 4.3
Target Milestone:	UCS 4.3-0-errata
Hardware:	All
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:	6.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Description Philipp Hahn

2018-04-04 17:14:49 CEST

New Debian openssl1.0 1.0.2l-2+deb9u3 fixes:
This update addresses the following issue:
* Constructed ASN.1 types with a recursive definition (such as can be found
  in PKCS7) could eventually exceed the stack given malicious input with
  excessive recursion. This could result in a Denial Of Service attack. There
  are no such structures used within SSL/TLS that come from untrusted sources
  so this is considered safe. (CVE-2018-0739)

CVE-2018-0739 openssl: Handling of crafted recursive ASN.1 structures can cause a stack overflow and resulting denial of service

Comment 1 Philipp Hahn

2018-04-04 17:21:45 CEST

[4.3-0] dad7065a6f Bug #46776: openssl1.0_1.0.2l-2+deb9u3

Comment 2 Quality Assurance

2018-05-04 16:43:34 CEST

--- mirror/ftp/4.3/unmaintained/4.3-0/source/openssl1.0_1.0.2l-2+deb9u2.dsc
+++ apt/ucs_4.3-0-errata4.3-0/source/openssl1.0_1.0.2l-2+deb9u3.dsc
@@ -1,3 +1,8 @@
+1.0.2l-2+deb9u3 [Thu, 29 Mar 2018 13:10:14 +0200] Sebastian Andrzej Siewior <sebastian@breakpoint.cc>:
+
+  * CVE-2018-0739 (Constructed ASN.1 types with a recursive definition could
+    exceed the stack)
+
 1.0.2l-2+deb9u2 [Wed, 13 Dec 2017 23:09:47 +0100] Sebastian Andrzej Siewior <sebastian@breakpoint.cc>:
 
   * CVE-2017-3737 (Read/write after SSL object in error state)

Comment 3 Arvid Requate

2018-05-15 11:04:12 CEST

* No UCS specific patches
* Comparison to previously shipped version ok
* Binary package update Ok
* Advisory Ok

Comment 4 Arvid Requate

2018-05-16 17:04:20 CEST

<http://errata.software-univention.de/ucs/4.3/65.html>