Bug 46776 - openssl1.0: Multiple issues (4.3)
openssl1.0: Multiple issues (4.3)
Product: UCS
Classification: Unclassified
Component: Security updates
UCS 4.3
All Linux
: P3 normal (vote)
: UCS 4.3-0-errata
Assigned To: Philipp Hahn
Arvid Requate
Depends on:
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Reported: 2018-04-04 17:14 CEST by Philipp Hahn
Modified: 2018-05-16 17:04 CEST (History)
1 user (show)

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What kind of report is it?: Security Issue
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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)


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Description Philipp Hahn univentionstaff 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 univentionstaff 2018-04-04 17:21:45 CEST
[4.3-0] dad7065a6f Bug #46776: openssl1.0_1.0.2l-2+deb9u3
Comment 2 Quality Assurance univentionstaff 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 univentionstaff 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 univentionstaff 2018-05-16 17:04:20 CEST