Bug 47546 - libvncserver: Multiple issues (4.2)
libvncserver: Multiple issues (4.2)
Status: CLOSED FIXED
Product: UCS
Classification: Unclassified
Component: Security updates
UCS 4.2
All Linux
: P3 normal (vote)
: UCS 4.2-4-errata
Assigned To: Quality Assurance
Philipp Hahn
:
Depends on:
Blocks:
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Reported: 2018-08-09 10:19 CEST by Quality Assurance
Modified: 2018-08-15 16:20 CEST (History)
0 users

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What kind of report is it?: Security Issue
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Max CVSS v3 score: 5.4 (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L)


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Description Quality Assurance univentionstaff 2018-08-09 10:19:55 CEST
New Debian libvncserver 0.9.9+dfsg2-6.1+deb8u3 fixes:
This update addresses the following issue(s):
* 
* An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets. (CVE-2018-7225)

0.9.9+dfsg2-6.1+deb8u3 (Tue, 05 Jun 2018 14:05:57 +0200) * Non-maintainer upload. * Fix CVE-2018-7225: Uninitialized and potentially sensitive data could be accessed by remote attackers because the msg.cct.length in rfbserver.c was not sanitized.
* CVE-2018-7225 libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c (CVE-2018-7225)
Comment 1 Quality Assurance univentionstaff 2018-08-09 18:44:07 CEST
--- mirror/ftp/4.2/unmaintained/4.2-0/source/libvncserver_0.9.9+dfsg2-6.1+deb8u2.dsc
+++ apt/ucs_4.2-0-errata4.2-4/source/libvncserver_0.9.9+dfsg2-6.1+deb8u3.dsc
@@ -1,3 +1,10 @@
+0.9.9+dfsg2-6.1+deb8u3 [Tue, 05 Jun 2018 14:05:57 +0200] Markus Koschany <apo@debian.org>:
+
+  * Non-maintainer upload.
+  * Fix CVE-2018-7225: Uninitialized and potentially sensitive data could be
+    accessed by remote attackers because the msg.cct.length in rfbserver.c was
+    not sanitized. (Closes: #894045)
+
 0.9.9+dfsg2-6.1+deb8u2 [Tue, 03 Jan 2017 09:41:51 +0100] Peter Spiess-Knafl <dev@spiessknafl.at>:
 
   * CVE-2016-9941 (Closes: #850007)

<http://10.200.17.11/4.2-4/#6773918246536118581>
Comment 2 Philipp Hahn univentionstaff 2018-08-10 10:14:11 CEST
OK: patch
OK: piuparts
OK: errata-announce
OK: yaml

[4.2-4] eeca186394 Bug #47546: libvncserver 0.9.9+dfsg2-6.1+deb8u3
 doc/errata/staging/libvncserver.yaml | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

[4.2-4] 79c3e379e1 Bug #47546: libvncserver 0.9.9+dfsg2-6.1+deb8u3
 doc/errata/staging/libvncserver.yaml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
Comment 3 Arvid Requate univentionstaff 2018-08-15 16:20:39 CEST
<http://errata.software-univention.de/ucs/4.2/465.html>