Bug 45621 - libxfont: Multiple issues (4.2)
libxfont: Multiple issues (4.2)
Status: CLOSED FIXED
Product: UCS
Classification: Unclassified
Component: Security updates
UCS 4.2
Other Linux
: P5 normal (vote)
: UCS 4.2-3-errata
Assigned To: Philipp Hahn
Arvid Requate
:
Depends on:
Blocks: 38068
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Reported: 2017-10-30 19:57 CET by Arvid Requate
Modified: 2018-05-08 14:56 CEST (History)
0 users

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What kind of report is it?: Security Issue
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Max CVSS v3 score: 4 (AV:L/AC:M/Au:N/C:P/I:P/A:P)
requate: Patch_Available+


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Description Arvid Requate univentionstaff 2017-10-30 19:57:33 CET
Upstream Debian package version 1:1.5.1-1+deb8u1 fixes:

* In the PatternMatch function in fontfile/fontdir.c in libXfont through 1.5.2 and 2.x before 2.0.2, an attacker with access to an X connection can cause a buffer over-read during pattern matching of fonts, leading to information disclosure or a crash (denial of service). This occurs because '\0' characters are incorrectly skipped in situations involving ? characters. (CVE-2017-13720)

* In the pcfGetProperties function in bitmap/pcfread.c in libXfont through 1.5.2 and 2.x before 2.0.2, a missing boundary check (for PCF files) could be used by local attackers authenticated to an Xserver for a buffer over-read, for information disclosure or a crash of the X server. (CVE-2017-13722)
Comment 1 Philipp Hahn univentionstaff 2018-01-25 10:59:31 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 2 Quality Assurance univentionstaff 2018-05-04 16:57:40 CEST
--- mirror/ftp/4.2/unmaintained/4.2-0/source/libxfont_1.5.1-1.dsc
+++ apt/ucs_4.2-0-errata4.2-3/source/libxfont_1.5.1-1+deb8u1.dsc
@@ -1,3 +1,8 @@
+1:1.5.1-1+deb8u1 [Mon, 09 Oct 2017 18:30:05 +0200] Julien Cristau <jcristau@debian.org>:
+
+  * Check for end of string in PatternMatch (CVE-2017-13720)
+  * pcfGetProperties: Check string boundaries (CVE-2017-13722)
+
 1:1.5.1-1 [Tue, 17 Mar 2015 16:55:21 +0100] Julien Cristau <jcristau@debian.org>:
 
   * New upstream release
Comment 3 Arvid Requate univentionstaff 2018-05-08 12:03:55 CEST
* No UCS specific patches
* Comparison to previously shipped version ok
* Binary package update Ok
* Advisory adjusted:
  c9acb760f3 | Sort CVEs
Comment 4 Arvid Requate univentionstaff 2018-05-08 14:56:38 CEST
<http://errata.software-univention.de/ucs/4.2/360.html>