Bug 46623 – w3m: Multiple issues (4.3)

Bug 46623 - w3m: Multiple issues (4.3)


Summary:	w3m: Multiple issues (4.3)

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Security updates
Version:	UCS 4.3
Hardware:	All Linux

Importance:	P3 normal (vote)
Target Milestone:	UCS 4.3-0-errata
Assigned To:	Philipp Hahn
QA Contact:	Arvid Requate

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Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2018-03-13 16:39 CET by Philipp Hahn
Modified:	2018-05-16 17:04 CEST (History)
CC List:	1 user (show)

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What kind of report is it?:	Security Issue
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Max CVSS v3 score:	4.3 (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N)

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Description Philipp Hahn

2018-03-13 16:39:32 CET

New Debian w3m 0.5.3-34+deb9u1 fixes:
This update addresses the following issues:
* w3m is prone to an infinite recursion flaw in HTMLlineproc0 because the
  feed_table_block_tag function in table.c does not prevent a negative indent
  value. (CVE-2018-6196)
* w3m is prone to a NULL pointer dereference flaw in formUpdateBuffer in
  form.c. (CVE-2018-6197)
* w3m does not properly handle temporary files when the ~/.w3m directory is
  unwritable, which allows a local attacker to craft a symlink attack to
  overwrite arbitrary files. (CVE-2018-6198)

CVE-2018-6196 w3m: Infinite recursion in HTMLlineproc0
CVE-2018-6197 w3m: Null pointer dereference in formUpdateBuffer in form.c
CVE-2018-6198 w3m: insecure temporary files creation when ~/.w3m is unwritable

Comment 1 Philipp Hahn

2018-03-13 17:39:19 CET

[4.3-0] d30990f10d Bug #46623: w3m_0.5.3-34+deb9u1

Comment 2 Quality Assurance

2018-05-04 16:43:25 CEST

--- mirror/ftp/4.3/unmaintained/4.3-0/source/w3m_0.5.3-34.dsc
+++ apt/ucs_4.3-0-errata4.3-0/source/w3m_0.5.3-34+deb9u1.dsc
@@ -1,3 +1,10 @@
+0.5.3-34+deb9u1 [Fri, 26 Jan 2018 18:50:05 +0900] Tatsuya Kinoshita <tats@debian.org>:
+
+  * New patch 955_tbl-indent.patch to fix stack overflow [CVE-2018-6196]
+  * New patch 956_columnpos.patch to fix null deref [CVE-2018-6197]
+  * New patch 957_mkdtemp.patch to fix /tmp file races [CVE-2018-6198]
+    (closes: #888097)
+
 0.5.3-34 [Wed, 04 Jan 2017 23:25:02 +0900] Tatsuya Kinoshita <tats@debian.org>:
 
   * Update 020_debian.patch to v0.5.3+git20170102

Comment 3 Arvid Requate

2018-05-15 11:46:31 CEST

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

Comment 4 Arvid Requate

2018-05-16 17:04:02 CEST

<http://errata.software-univention.de/ucs/4.3/75.html>