Bug 46623 - w3m: Multiple issues (4.3)
w3m: 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: 2018-03-13 16:39 CET 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: 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 univentionstaff 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 univentionstaff 2018-03-13 17:39:19 CET
[4.3-0] d30990f10d Bug #46623: w3m_0.5.3-34+deb9u1
Comment 2 Quality Assurance univentionstaff 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 univentionstaff 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 univentionstaff 2018-05-16 17:04:02 CEST